2007-01-07 Jonathan Pobst <monkey@jpobst.com>
[mono.git] / mcs / class / Managed.Windows.Forms / System.Windows.Forms / Control.cs
index 06e2dc7870a216775e849a2645088e934ebe6c72..b32e216b53dda6b9816a5436080b0f2d4f09b358 100644 (file)
@@ -30,9 +30,8 @@
 //     John Sohn               jsohn@columbus.rr.com
 //
 
-// COMPLETE 
-
 #undef DebugRecreate
+#undef DebugFocus
 
 using System;
 using System.ComponentModel;
@@ -49,88 +48,106 @@ using System.Threading;
 
 namespace System.Windows.Forms
 {
+#if NET_2_0
+       [ComVisible(true)]
+       [ClassInterface (ClassInterfaceType.AutoDispatch)]
+#endif
        [Designer("System.Windows.Forms.Design.ControlDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
        [DefaultProperty("Text")]
        [DefaultEvent("Click")]
        [DesignerSerializer("System.Windows.Forms.Design.ControlCodeDomSerializer, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.Serialization.CodeDomSerializer, " + Consts.AssemblySystem_Design)]
        [ToolboxItemFilter("System.Windows.Forms")]
        public class Control : Component, ISynchronizeInvoke, IWin32Window
-        {
+#if NET_2_0
+               , IBindableComponent, IDropTarget
+#endif
+       {
                #region Local Variables
 
                // Basic
                internal Rectangle              bounds;                 // bounding rectangle for control (client area + decorations)
+               Rectangle               explicit_bounds; // explicitly set bounds
                internal object                 creator_thread;         // thread that created the control
-               internal ControlNativeWindow    window;                 // object for native window handle
-               internal string                 name;                   // for object naming
+               internal                ControlNativeWindow     window;                 // object for native window handle
+               string                  name; // for object naming
 
                // State
-               internal bool                   is_created;             // true if OnCreateControl has been sent
-               internal bool                   has_focus;              // true if control has focus
-               internal bool                   is_visible;             // true if control is visible
-               internal bool                   is_entered;             // is the mouse inside the control?
-               internal bool                   is_enabled;             // true if control is enabled (usable/not grayed out)
-               internal bool                   is_accessible;          // true if the control is visible to accessibility applications
-               internal bool                   is_captured;            // tracks if the control has captured the mouse
+               bool                    is_created; // true if OnCreateControl has been sent
+               internal bool           has_focus;              // true if control has focus
+               internal bool           is_visible;             // true if control is visible
+               internal bool           is_entered;             // is the mouse inside the control?
+               internal bool           is_enabled;             // true if control is enabled (usable/not grayed out)
+               bool                    is_accessible; // true if the control is visible to accessibility applications
+               bool                    is_captured; // tracks if the control has captured the mouse
                internal bool                   is_toplevel;            // tracks if the control is a toplevel window
-               internal bool                   is_recreating;          // tracks if the handle for the control is being recreated
-               internal bool                   causes_validation;      // tracks if validation is executed on changes
-               internal bool                   is_focusing;            // tracks if Focus has been called on the control and has not yet finished
-               internal int                    tab_index;              // position in tab order of siblings
-               internal bool                   tab_stop = true;        // is the control a tab stop?
-               internal bool                   is_disposed;            // has the window already been disposed?
-               internal Size                   client_size;            // size of the client area (window excluding decorations)
-               internal Rectangle              client_rect;            // rectangle with the client area (window excluding decorations)
-               internal ControlStyles          control_style;          // rather win32-specific, style bits for control
-               internal ImeMode                ime_mode = ImeMode.Inherit;
-               internal bool                   layout_pending;         // true if our parent needs to re-layout us
-               internal object                 control_tag;            // object that contains data about our control
+               bool                    is_recreating; // tracks if the handle for the control is being recreated
+               bool                    causes_validation; // tracks if validation is executed on changes
+               bool                    is_focusing; // tracks if Focus has been called on the control and has not yet finished
+               bool                    container_selected; // true if Select() or Focus() is called on a container, to prevent child controls from raising their GotFocus event
+               int                     tab_index; // position in tab order of siblings
+               bool                    tab_stop; // is the control a tab stop?
+               bool                    is_disposed; // has the window already been disposed?
+               Size                    client_size; // size of the client area (window excluding decorations)
+               Rectangle               client_rect; // rectangle with the client area (window excluding decorations)
+               ControlStyles           control_style; // rather win32-specific, style bits for control
+               ImeMode                 ime_mode;
+               object                  control_tag; // object that contains data about our control
                internal int                    mouse_clicks;           // Counter for mouse clicks
-               internal Cursor                 cursor;                 // Cursor for the window
+               Cursor                  cursor; // Cursor for the window
                internal bool                   allow_drop;             // true if the control accepts droping objects on it   
-               internal Region                 clip_region;            // User-specified clip region for the window
+               Region                  clip_region; // User-specified clip region for the window
 
                // Visuals
                internal Color                  foreground_color;       // foreground color for control
                internal Color                  background_color;       // background color for control
-               internal Image                  background_image;       // background image for control
+               Image                   background_image; // background image for control
                internal Font                   font;                   // font for control
-               internal string                 text;                   // window/title text for control
-               internal BorderStyle            border_style;           // Border style of control
+               string                  text; // window/title text for control
+               internal                BorderStyle             border_style;           // Border style of control
 
                // Layout
-               internal AnchorStyles           anchor_style;           // anchoring requirements for our control
-               internal DockStyle              dock_style;             // docking requirements for our control (supercedes anchoring)
-               internal int                    dist_left;              // distance to the left border of the parent
-               internal int                    dist_top;               // distance to the top border of the parent
-               internal int                    dist_right;             // distance to the right border of the parent
-               internal int                    dist_bottom;            // distance to the bottom border of the parent
+               internal enum LayoutType {
+                       Anchor,
+                       Dock
+               }
+               Layout.LayoutEngine layout_engine;
+               int layout_suspended;
+               bool layout_pending; // true if our parent needs to re-layout us
+               internal AnchorStyles anchor_style; // anchoring requirements for our control
+               internal DockStyle dock_style; // docking requirements for our control
+               LayoutType layout_type;
 
-               // to be categorized...
-               static internal ArrayList       controls = new ArrayList();  // All of the application's controls, in a flat list
-               internal ControlCollection      child_controls;         // our children
-               internal Control                parent;                 // our parent control
-               internal AccessibleObject       accessibility_object;   // object that contains accessibility information about our control
-               internal BindingContext         binding_context;        // TODO
-               internal RightToLeft            right_to_left;          // drawing direction for control
-               internal int                    layout_suspended;
-               internal ContextMenu            context_menu;           // Context menu associated with the control
+               // Please leave the next 2 as internal until DefaultLayout (2.0) is rewritten
+               internal int                    dist_right; // distance to the right border of the parent
+               internal int                    dist_bottom; // distance to the bottom border of the parent
 
-               private Graphics                dc_mem;                 // Graphics context for double buffering
-               private Bitmap                  bmp_mem;                // Bitmap for double buffering control
-               private Region                  invalid_region;
+               // to be categorized...
+               ControlCollection       child_controls; // our children
+               Control                 parent; // our parent control
+               AccessibleObject        accessibility_object; // object that contains accessibility information about our control
+               BindingContext          binding_context;
+               RightToLeft             right_to_left; // drawing direction for control
+               ContextMenu             context_menu; // Context menu associated with the control
+
+               // double buffering
+               DoubleBuffer            backbuffer;
+               
+               // to implement DeviceContext without depending on double buffering
+               Bitmap bmp;
+               Graphics bmp_g;
 
-               private ControlBindingsCollection data_bindings;
+               ControlBindingsCollection data_bindings;
 
 #if NET_2_0
-               internal bool                   use_compatible_text_rendering;
-               static internal bool            verify_thread_handle;
-               private Padding                 padding;
-               private Size                    maximum_size;
-               private Size                    minimum_size;
-               private Size                    preferred_size;
-               private Padding                 margin;
-               internal Layout.LayoutEngine    layout_engine;
+               internal bool use_compatible_text_rendering;
+               static bool verify_thread_handle;
+               Padding padding;
+               ImageLayout backgroundimage_layout;
+               Size maximum_size;
+               Size minimum_size;
+               Size preferred_size;
+               Padding margin;
+               private ContextMenuStrip context_menu_strip;
 #endif
 
                #endregion      // Local Variables
@@ -185,9 +202,13 @@ namespace System.Windows.Forms
                
                #region Public Classes
                [ComVisible(true)]
-               public class ControlAccessibleObject : AccessibleObject {                       
+               public class ControlAccessibleObject : AccessibleObject {
+                       Control owner;
+
                        #region ControlAccessibleObject Constructors
-                       public ControlAccessibleObject(Control ownerControl) {
+                       public ControlAccessibleObject(Control ownerControl)
+                               : base (ownerControl)
+                       {
                                this.owner = ownerControl;
                        }
                        #endregion      // ControlAccessibleObject Constructors
@@ -279,36 +300,157 @@ namespace System.Windows.Forms
                        #endregion      // ControlAccessibleObject Public Instance Methods
                }
 
+               private class DoubleBuffer : IDisposable
+               {
+                       public Region InvalidRegion;
+                       private Stack real_graphics;
+                       private object back_buffer;
+                       private Control parent;
+                       private bool pending_disposal;
+                       
+                       public DoubleBuffer (Control parent)
+                       {
+                               this.parent = parent;
+                               real_graphics = new Stack ();
+                               int width = parent.Width;
+                               int height = parent.Height;
+
+                               if (width < 1) width = 1;
+                               if (height < 1) height = 1;
+
+                               XplatUI.CreateOffscreenDrawable (parent.Handle, width, height, out back_buffer);
+                               Invalidate ();
+                       }
+                       
+                       public void Blit (PaintEventArgs pe)
+                       {
+                               Graphics buffered_graphics;
+                               buffered_graphics = XplatUI.GetOffscreenGraphics (back_buffer);
+                               XplatUI.BlitFromOffscreen (parent.Handle, pe.Graphics, back_buffer, buffered_graphics, pe.ClipRectangle);
+                               buffered_graphics.Dispose ();
+                       }
+                       
+                       public void Start (PaintEventArgs pe)
+                       {                               
+                               // We need to get the graphics for every paint.
+                               real_graphics.Push(pe.SetGraphics (XplatUI.GetOffscreenGraphics (back_buffer)));
+                       }
+
+                       public void End (PaintEventArgs pe)
+                       {
+                               Graphics buffered_graphics;
+                               buffered_graphics = pe.SetGraphics ((Graphics) real_graphics.Pop ());
+
+                               if (pending_disposal) 
+                                       Dispose ();
+                               else {
+                                       XplatUI.BlitFromOffscreen (parent.Handle, pe.Graphics, back_buffer, buffered_graphics, pe.ClipRectangle);
+                                       InvalidRegion.Exclude (pe.ClipRectangle);
+                               }
+                               buffered_graphics.Dispose ();
+                       }
+                       
+                       public void Invalidate ()
+                       {
+                               if (InvalidRegion != null)
+                                       InvalidRegion.Dispose ();
+                               InvalidRegion = new Region (parent.ClientRectangle);
+                       }
+                       
+                       public void Dispose ()
+                       {
+                               if (real_graphics.Count > 0) {
+                                       pending_disposal = true;
+                                       return;
+                               }
+                               
+                               XplatUI.DestroyOffscreenDrawable (back_buffer);
+
+                               if (InvalidRegion != null)
+                                       InvalidRegion.Dispose ();
+                               InvalidRegion = null;
+                               back_buffer = null;
+                               GC.SuppressFinalize (this);
+                       }
+
+                       #region IDisposable Members
+                       void IDisposable.Dispose ()
+                       {
+                               Dispose ();
+                       }
+                       #endregion
+                       
+                       ~DoubleBuffer ()
+                       {
+                               Dispose ();
+                       }
+               }
+
+               [ListBindable (false)]
+#if NET_2_0
+               [ComVisible (false)]
+               public class ControlCollection : Layout.ArrangedElementCollection, IList, ICollection, ICloneable, IEnumerable {
+#else
                [DesignerSerializer("System.Windows.Forms.Design.ControlCollectionCodeDomSerializer, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.Serialization.CodeDomSerializer, " + Consts.AssemblySystem_Design)]
-               [ListBindable(false)]
                public class ControlCollection : IList, ICollection, ICloneable, IEnumerable {
+#endif
                        #region ControlCollection Local Variables
-                       private ArrayList       list;
-                       internal ArrayList      impl_list;
-                       private Control []      all_controls;
-                       internal Control        owner;
+#if !NET_2_0
+                       ArrayList list;
+#endif
+                       ArrayList impl_list;
+                       Control[] all_controls;
+                       Control owner;
                        #endregion      // ControlCollection Local Variables
 
                        #region ControlCollection Public Constructor
                        public ControlCollection(Control owner) {
                                this.owner=owner;
+#if !NET_2_0
                                this.list=new ArrayList();
+#endif
                        }
                        #endregion
 
                        #region ControlCollection Public Instance Properties
+                       int ICollection.Count {
+                               get { return Count; }
+                       }
+
+
+#if !NET_2_0
                        public int Count {
-                               get {
-                                       return list.Count;
-                               }
+                               get { return list.Count; }
                        }
+#endif
 
-                       public bool IsReadOnly {
+#if NET_2_0
+                       bool IList.IsReadOnly
+#else
+                       public bool IsReadOnly
+#endif
+                       {
                                get {
                                        return list.IsReadOnly;
                                }
                        }
 
+#if NET_2_0
+                       public Control Owner { get { return this.owner; } }
+                       
+                       public virtual Control this[string key] {
+                               get { 
+                                       int index = IndexOfKey (key);
+                                       
+                                       if (index >= 0)
+                                               return this[index];
+                                               
+                                       return null;
+                               }
+                       }
+                       
+                       new
+#endif
                        public virtual Control this[int index] {
                                get {
                                        if (index < 0 || index >= list.Count) {
@@ -316,18 +458,20 @@ namespace System.Windows.Forms
                                        }
                                        return (Control)list[index];
                                }
+                               
+                               
                        }
                        #endregion // ControlCollection Public Instance Properties
                        
-                       #region ControlCollection Private Instance Methods
+                       #region ControlCollection Instance Methods
                        public virtual void Add (Control value)
                        {
                                if (value == null)
                                        return;
                                
-                                if (Contains (value)) {
+                               if (Contains (value)) {
                                        owner.PerformLayout();
-                                        return;
+                                       return;
                                }
 
                                if (value.tab_index == -1) {
@@ -385,7 +529,9 @@ namespace System.Windows.Forms
                                owner.PerformLayout (control, "Parent");
                                owner.OnControlAdded (new ControlEventArgs (control));
                        }
-
+#if NET_2_0
+                       [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+#endif
                        public virtual void AddRange (Control[] controls)
                        {
                                if (controls == null)
@@ -416,6 +562,9 @@ namespace System.Windows.Forms
                                }
                        }
 
+#if NET_2_0
+                       new
+#endif
                        public virtual void Clear ()
                        {
                                all_controls = null;
@@ -468,24 +617,65 @@ namespace System.Windows.Forms
                                return Contains (value) || ImplicitContains (value);
                        }
 
+#if NET_2_0
+                       public virtual bool ContainsKey (string key)
+                       {
+                               return IndexOfKey (key) >= 0;
+                       }
+#endif
+
+                       void ICollection.CopyTo (Array array, int index)
+                       {
+                               CopyTo (array, index);
+                       }
+
+#if !NET_2_0
                        public void CopyTo (Array array, int index)
                        {
                                list.CopyTo(array, index);
                        }
 
-                       public override bool Equals(object other) {
+                       public override bool Equals (object other)
+                       {
                                if (other is ControlCollection && (((ControlCollection)other).owner==this.owner)) {
                                        return(true);
                                } else {
                                        return(false);
                                }
                        }
+#endif
+
+#if NET_2_0
+                       // LAMESPEC: MSDN says AE, MS implementation throws ANE
+                       public Control[] Find (string key, bool searchAllChildren)
+                       {
+                               if (string.IsNullOrEmpty (key))
+                                       throw new ArgumentNullException ("key");
+                                       
+                               ArrayList al = new ArrayList ();
+                               
+                               foreach (Control c in list) {
+                                       if (c.Name.Equals (key, StringComparison.CurrentCultureIgnoreCase))
+                                               al.Add (c);
+                                               
+                                       if (searchAllChildren)
+                                               al.AddRange (c.Controls.Find (key, true));
+                               }
+                               
+                               return (Control[])al.ToArray (typeof (Control));
+                       }
+#endif
 
                        public int GetChildIndex(Control child) {
                                return GetChildIndex(child, false);
                        }
 
-                       public int GetChildIndex(Control child, bool throwException) {
+#if NET_2_0
+                       public virtual int
+#else
+                       public int
+#endif
+                       GetChildIndex(Control child, bool throwException) {
                                int index;
 
                                index=list.IndexOf(child);
@@ -496,7 +686,13 @@ namespace System.Windows.Forms
                                return index;
                        }
 
-                       public IEnumerator GetEnumerator() {
+#if NET_2_0
+                       public override IEnumerator
+#else
+                       public IEnumerator
+#endif
+                       GetEnumerator ()
+                       {
                                return list.GetEnumerator();
                        }
 
@@ -523,15 +719,37 @@ namespace System.Windows.Forms
                                return all_controls;
                        }
 
-                       public override int GetHashCode() {
+#if !NET_2_0
+                       public override int GetHashCode()
+                       {
                                return base.GetHashCode();
                        }
+#endif
 
-                       public int IndexOf(Control control) {
+                       public int IndexOf(Control control)
+                       {
                                return list.IndexOf(control);
                        }
 
-                       public virtual void Remove(Control value) {
+#if NET_2_0
+                       public virtual int IndexOfKey (string key)
+                       {
+                               if (string.IsNullOrEmpty (key))
+                                       return -1;
+                                       
+                               for (int i = 0; i < list.Count; i++)
+                                       if (((Control)list[i]).Name.Equals (key, StringComparison.CurrentCultureIgnoreCase))
+                                               return i;
+                                               
+                               return -1;
+                       }
+#endif
+
+                       public virtual void Remove(Control value)
+                       {
+                               if (value == null)
+                                       return;
+
                                owner.PerformLayout(value, "Parent");
                                owner.OnControlRemoved(new ControlEventArgs(value));
 
@@ -555,14 +773,35 @@ namespace System.Windows.Forms
                                owner.UpdateChildrenZOrder ();
                        }
 
-                       public void RemoveAt(int index) {
+#if NET_2_0
+                       new
+#endif
+                       public void RemoveAt(int index)
+                       {
                                if (index < 0 || index >= list.Count) {
                                        throw new ArgumentOutOfRangeException("index", index, "ControlCollection does not have that many controls");
                                }
                                Remove ((Control)list[index]);
                        }
 
-                       public void SetChildIndex(Control child, int newIndex) {
+#if NET_2_0
+                       public virtual void RemoveByKey (string key)
+                       {
+                               int index = IndexOfKey (key);
+                               
+                               if (index >= 0)
+                                       RemoveAt (index);
+                       }       
+               
+                       public virtual void
+#else
+                       public void
+#endif
+                       SetChildIndex(Control child, int newIndex)
+                       {
+                               if (child == null)
+                                       throw new ArgumentNullException ("child");
+
                                int     old_index;
 
                                old_index=list.IndexOf(child);
@@ -688,8 +927,9 @@ namespace System.Windows.Forms
                #endregion      // ControlCollection Class
                
                #region Public Constructors
-               public Control() {                      
-
+               public Control()
+               {
+                       layout_type = LayoutType.Anchor;
                        anchor_style = AnchorStyles.Top | AnchorStyles.Left;
 
                        is_created = false;
@@ -702,42 +942,46 @@ namespace System.Windows.Forms
                        is_toplevel = false;
                        causes_validation = true;
                        has_focus = false;
-                       layout_suspended = 0;           
+                       layout_suspended = 0;
                        mouse_clicks = 1;
                        tab_index = -1;
                        cursor = null;
                        right_to_left = RightToLeft.Inherit;
                        border_style = BorderStyle.None;
                        background_color = Color.Empty;
-                       dist_left = 0;
                        dist_right = 0;
-                       dist_top = 0;
                        dist_bottom = 0;
+                       tab_stop = true;
+                       ime_mode = ImeMode.Inherit;
 
 #if NET_2_0
+                       backgroundimage_layout = ImageLayout.Tile;
                        use_compatible_text_rendering = Application.use_compatible_text_rendering;
                        padding = new Padding(0);
                        maximum_size = new Size();
                        minimum_size = new Size();
-                       preferred_size = new Size();
+                       preferred_size = this.DefaultSize;
                        margin = this.DefaultMargin;
-                       layout_engine = new Layout.DefaultLayout();
 #endif
 
                        control_style = ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | 
                                        ControlStyles.Selectable | ControlStyles.StandardClick | 
                                        ControlStyles.StandardDoubleClick;
+#if NET_2_0
+                       control_style |= ControlStyles.UseTextForAccessibility;
+#endif
 
                        parent = null;
                        background_image = null;
                        text = string.Empty;
-                       name = string.Empty;                    
+                       name = string.Empty;
 
                        window = new ControlNativeWindow(this);
                        child_controls = CreateControlsInstance();
                        client_size = new Size(DefaultSize.Width, DefaultSize.Height);
                        client_rect = new Rectangle(0, 0, DefaultSize.Width, DefaultSize.Height);
-                       XplatUI.CalculateWindowRect(ref client_rect, CreateParams.Style, CreateParams.ExStyle, null, out bounds);
+                       bounds.Size = SizeFromClientSize (client_size);
+                       
                        if ((CreateParams.Style & (int)WindowStyles.WS_CHILD) == 0) {
                                bounds.X=-1;
                                bounds.Y=-1;
@@ -778,33 +1022,25 @@ namespace System.Windows.Forms
                        if (!is_disposed && disposing) {
                                Capture = false;
 
-                               if (dc_mem!=null) {
-                                       dc_mem.Dispose();
-                                       dc_mem=null;
-                               }
+                               DisposeBackBuffer ();
 
-                               if (bmp_mem!=null) {
-                                       bmp_mem.Dispose();
-                                       bmp_mem=null;
+                               if (bmp != null) {
+                                       bmp.Dispose ();
+                                       bmp = null;
                                }
-
-                               if (invalid_region!=null) {
-                                       invalid_region.Dispose();
-                                       invalid_region=null;
+                               if (bmp_g != null) {
+                                       bmp_g.Dispose ();
+                                       bmp_g = null;
                                }
+                               
                                if (this.InvokeRequired) {
                                        if (Application.MessageLoop) {
                                                this.BeginInvokeInternal(new MethodInvoker(DestroyHandle), null, true);
-                                               this.BeginInvokeInternal(new RemoveDelegate(controls.Remove), new object[] {this}, true);
                                        }
                                } else {
                                        DestroyHandle();
-                                       lock (Control.controls) {
-                                               Control.controls.Remove(this);
-                                       }
                                }
 
-
                                if (parent != null) {
                                        parent.Controls.Remove(this);
                                }
@@ -822,6 +1058,14 @@ namespace System.Windows.Forms
                #endregion      // Public Constructors
 
                #region Internal Properties
+               internal bool VisibleInternal {
+                       get { return is_visible; }
+               }
+
+               internal LayoutType ControlLayoutType {
+                       get { return layout_type; }
+               }
+
                internal BorderStyle InternalBorderStyle {
                        get {
                                return border_style;
@@ -835,8 +1079,9 @@ namespace System.Windows.Forms
                                        border_style = value;
 
                                        if (IsHandleCreated) {
-                                               XplatUI.SetBorderStyle(window.Handle, (FormBorderStyle)border_style);
-                                               Refresh();
+                                               XplatUI.SetBorderStyle (window.Handle, (FormBorderStyle)border_style);
+                                               RecreateHandle ();
+                                               Refresh ();
                                        }
                                }
                        }
@@ -844,14 +1089,35 @@ namespace System.Windows.Forms
                #endregion      // Internal Properties
 
                #region Private & Internal Methods
+               
+#if NET_2_0
+               void IDropTarget.OnDragDrop (DragEventArgs e)
+               {
+                       OnDragDrop (e);
+               }
+               
+               void IDropTarget.OnDragEnter (DragEventArgs e)
+               {
+                       OnDragEnter (e);
+               }
+               
+               void IDropTarget.OnDragLeave (EventArgs e)
+               {
+                       OnDragLeave (e);
+               }
+
+               void IDropTarget.OnDragOver (DragEventArgs e)
+               {
+                       OnDragOver (e);
+               }
+#endif
+
                internal IAsyncResult BeginInvokeInternal (Delegate method, object [] args, bool disposing) {
                        AsyncMethodResult       result;
                        AsyncMethodData         data;
 
                        if (!disposing) {
-                               Control                 p;
-
-                               p = this;
+                               Control p = this;
                                do {
                                        if (!p.IsHandleCreated) {
                                                throw new InvalidOperationException("Cannot call Invoke or InvokeAsync on a control until the window handle is created");
@@ -902,52 +1168,34 @@ namespace System.Windows.Forms
                }
 
                internal Graphics DeviceContext {
-                       get { 
-                               if (dc_mem == null) {
-                                       CreateBuffers(this.Width, this.Height);
-                               }
-                               return dc_mem;
-                       }
-               }
-
-               private void ImageBufferNeedsRedraw () {
-                       if (invalid_region != null)
-                               invalid_region.Dispose();
-                       invalid_region = new Region (ClientRectangle);
-               }
-
-               private Bitmap ImageBuffer {
                        get {
-                               if (bmp_mem==null) {
-                                       CreateBuffers(this.Width, this.Height);
+                               if (bmp_g == null) {
+                                       bmp = new Bitmap(1, 1, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
+                                       bmp_g = Graphics.FromImage (bmp);
                                }
-                               return bmp_mem;
+                               return bmp_g;
                        }
                }
 
-               internal void CreateBuffers (int width, int height) {
-                       if (width < 1) {
-                               width = 1;
-                       }
-
-                       if (height < 1) {
-                               height = 1;
-                       }
+               private void InvalidateBackBuffer ()
+               {
+                       if (backbuffer != null)
+                               backbuffer.Invalidate ();
+               }
 
-                       bmp_mem = new Bitmap (width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
-                       dc_mem = Graphics.FromImage (bmp_mem);
-                       ImageBufferNeedsRedraw ();
+               private DoubleBuffer GetBackBuffer ()
+               {
+                       if (backbuffer == null)
+                               backbuffer = new DoubleBuffer (this);
+                       return backbuffer;
                }
 
-               internal void InvalidateBuffers ()
+               private void DisposeBackBuffer ()
                {
-                       if (dc_mem != null) {
-                               dc_mem.Dispose ();
+                       if (backbuffer != null) {
+                               backbuffer.Dispose ();
+                               backbuffer = null;
                        }
-
-                       dc_mem = null;
-                       bmp_mem = null;
-                       ImageBufferNeedsRedraw ();
                }
 
                internal static void SetChildColor(Control parent) {
@@ -959,7 +1207,6 @@ namespace System.Windows.Forms
                                        SetChildColor(child);
                                }
                        }
-                               
                }
 
                internal bool Select(Control control) {
@@ -970,7 +1217,7 @@ namespace System.Windows.Forms
                        }
 
                        container = GetContainerControl();
-                       if (container != null) {
+                       if (container != null && (Control)container != control) {
                                container.ActiveControl = control;
                        }
                        if (control.IsHandleCreated) {
@@ -989,6 +1236,10 @@ namespace System.Windows.Forms
                        // Only here to be overriden by our actual controls; this is needed by the accessibility class
                }
 
+               internal static IntPtr MakeParam (int low, int high){
+                       return new IntPtr (high << 16 | low & 0xffff);
+               }
+
                internal static int LowOrder (int param) {
                        return ((int)(short)(param & 0xffff));
                }
@@ -1071,9 +1322,49 @@ namespace System.Windows.Forms
 
                void DrawBackgroundImage (Graphics g)
                {
+#if NET_2_0
+                       Rectangle drawing_rectangle = new Rectangle ();
+                       g.FillRectangle (ThemeEngine.Current.ResPool.GetSolidBrush (BackColor), ClientRectangle);
+                               
+                       switch (backgroundimage_layout)
+                       {
+                       case ImageLayout.Tile:
+                               using (TextureBrush b = new TextureBrush (background_image, WrapMode.Tile)) {
+                                       g.FillRectangle (b, ClientRectangle);
+                               }
+                               return;
+                       case ImageLayout.Center:
+                               drawing_rectangle.Location = new Point (ClientSize.Width / 2 - background_image.Width / 2, ClientSize.Height / 2 - background_image.Height / 2);
+                               drawing_rectangle.Size = background_image.Size;
+                               break;
+                       case ImageLayout.None:
+                               drawing_rectangle.Location = Point.Empty;
+                               drawing_rectangle.Size = background_image.Size;
+                               break;
+                       case ImageLayout.Stretch:
+                               drawing_rectangle = ClientRectangle;
+                               break;
+                       case ImageLayout.Zoom:
+                               drawing_rectangle = ClientRectangle;
+                               if ((float)background_image.Width / (float)background_image.Height < (float)drawing_rectangle.Width / (float) drawing_rectangle.Height) {
+                                       drawing_rectangle.Width = (int) (background_image.Width * ((float)drawing_rectangle.Height / (float)background_image.Height));
+                                       drawing_rectangle.X = (ClientRectangle.Width - drawing_rectangle.Width) / 2;
+                               } else {
+                                       drawing_rectangle.Height = (int) (background_image.Height * ((float)drawing_rectangle.Width / (float)background_image.Width));
+                                       drawing_rectangle.Y = (ClientRectangle.Height - drawing_rectangle.Height) / 2;
+                               }
+                               break;
+                       default:
+                               return;
+                       }
+
+                       g.DrawImage (background_image, drawing_rectangle);
+
+#else
                        using (TextureBrush b = new TextureBrush (background_image, WrapMode.Tile)) {
                                g.FillRectangle (b, ClientRectangle);
                        }
+#endif
                }
 
                internal virtual void DndEnter (DragEventArgs e)
@@ -1131,7 +1422,7 @@ namespace System.Windows.Forms
                                buttons |= MouseButtons.Middle;
                                
                        if ((param & (int) MsgButtons.MK_RBUTTON) != 0)
-                               buttons |= MouseButtons.Right;          
+                               buttons |= MouseButtons.Right;
                                
                        return buttons;
 
@@ -1175,7 +1466,6 @@ namespace System.Windows.Forms
                                index = -1;
                        }
 
-
                        for (int i = 0, pos = -1; i < end; i++) {
                                if (start == container.child_controls[i]) {
                                        pos = i;
@@ -1197,30 +1487,27 @@ namespace System.Windows.Forms
 
                private static Control FindControlForward(Control container, Control start) {
                        Control found;
-                       Control p;
 
                        found = null;
 
-                       if (start != null) {
-                               if (start.child_controls != null && start.child_controls.Count > 0 &&
-                                       !((start is IContainerControl) && start.GetStyle(ControlStyles.ContainerControl))) {
-                                       found = FindControlForward(start, null);
-                                       if (found != null) {
-                                               return found;
-                                       }
-                               }
+                       if (start == null) {
+                               return FindFlatForward(container, start);
+                       }
 
-                               p = start.parent;
-                               while (p != container) {
-                                       found = FindFlatForward(p, start);
+                       if (start.child_controls != null && start.child_controls.Count > 0 && 
+                               (start == container || !((start is IContainerControl) &&  start.GetStyle(ControlStyles.ContainerControl)))) {
+                               return FindControlForward(start, null);
+                       }
+                       else {
+                               while (start != container) {
+                                       found = FindFlatForward(start.parent, start);
                                        if (found != null) {
                                                return found;
                                        }
-                                       start = p;
-                                       p = p.parent;
+                                       start = start.parent;
                                }
                        }
-                       return FindFlatForward(container, start);
+                       return null;
                }
 
                private static Control FindFlatBackward(Control container, Control start) {
@@ -1244,27 +1531,55 @@ namespace System.Windows.Forms
                                index++;
                        }
 
-                       for (int i = end-1, pos = -1; i >= 0; i--) {
+                       bool hit = false;
+                                       
+                       for (int i = end - 1; i >= 0; i--) {
                                if (start == container.child_controls[i]) {
-                                       pos = i;
+                                       hit = true;
                                        continue;
                                }
 
-                               if (found == null) {
-                                       if (container.child_controls[i].tab_index < index || 
-                                               (pos > -1 && pos > i && container.child_controls[i].tab_index == index)) {
-                                               found = container.child_controls[i];
-                                       }
-                               } else if (found.tab_index < container.child_controls[i].tab_index) {
-                                       if (container.child_controls[i].tab_index < index) {
+                               if (found == null || found.tab_index < container.child_controls[i].tab_index) {
+                                       if (container.child_controls[i].tab_index < index || (hit && container.child_controls[i].tab_index == index))
                                                found = container.child_controls[i];
-                                       }
+
                                }
                        }
                        return found;
                }
 
                private static Control FindControlBackward(Control container, Control start) {
+
+                       Control found = null;
+
+                       if (start == null) {
+                               found = FindFlatBackward(container, start);
+                       }
+                       else if (start != container) {
+                               if (start.parent != null) {
+                                       found = FindFlatBackward(start.parent, start);
+
+                                       if (found == null) {
+                                               if (start.parent != container)
+                                                       return start.parent;
+                                               return null;
+                                       }
+                               }
+                       }
+               
+                       if (found == null || start.parent == null)
+                               found = start;
+
+                       while (found != null && (found == container || (!((found is IContainerControl) && found.GetStyle(ControlStyles.ContainerControl))) &&
+                               found.child_controls != null && found.child_controls.Count > 0)) {
+//                             while (ctl.child_controls != null && ctl.child_controls.Count > 0 && 
+//                                     (ctl == this || (!((ctl is IContainerControl) && ctl.GetStyle(ControlStyles.ContainerControl))))) {
+                               found = FindFlatBackward(found, null);
+                       }
+
+                       return found;
+
+/*
                        Control found;
 
                        found = null;
@@ -1289,8 +1604,8 @@ namespace System.Windows.Forms
                                        }
                                }
                        }
-
                        return found;
+*/                     
                }
 
                internal virtual void HandleClick(int clicks, MouseEventArgs me) {
@@ -1308,6 +1623,14 @@ namespace System.Windows.Forms
                                }
                        }
                }
+               
+               internal void CaptureWithConfine (Control ConfineWindow)
+               {
+                       if (this.IsHandleCreated && !is_captured) {
+                               is_captured = true;
+                               XplatUI.GrabWindow (this.window.Handle, ConfineWindow.Handle);
+                       }
+               }
 
                private void CheckDataBindings ()
                {
@@ -1320,7 +1643,6 @@ namespace System.Windows.Forms
                        }
                }
 
-
                private void ChangeParent(Control new_parent) {
                        bool            pre_enabled;
                        bool            pre_visible;
@@ -1375,7 +1697,7 @@ namespace System.Windows.Forms
                                OnRightToLeftChanged(EventArgs.Empty);
                        }
 
-                       if ((new_parent != null) && new_parent.Created && !Created) {
+                       if ((new_parent != null) && new_parent.Created && is_visible && !Created) {
                                CreateControl();
                        }
 
@@ -1385,11 +1707,24 @@ namespace System.Windows.Forms
                }
 
                private void UpdateDistances() {
-                       if ((parent != null) && (parent.layout_suspended == 0)) {
-                               dist_left = bounds.X;
-                               dist_top = bounds.Y;
-                               dist_right = parent.ClientSize.Width - bounds.X - bounds.Width;
-                               dist_bottom = parent.ClientSize.Height - bounds.Y - bounds.Height;
+                       if (parent != null) {
+                               if (bounds.Width > 0)
+                                       dist_right = parent.ClientSize.Width - bounds.X - bounds.Width;
+                               if (bounds.Height > 0)
+                                       dist_bottom = parent.ClientSize.Height - bounds.Y - bounds.Height;
+                       }
+               }
+               
+               private bool UseDoubleBuffering {
+                       get {
+                               if (!ThemeEngine.Current.DoubleBufferingSupported)
+                                       return false;
+
+#if NET_2_0
+                               if (DoubleBuffered)
+                                       return true;
+#endif
+                               return (control_style & ControlStyles.DoubleBuffer) != 0;
                        }
                }
                #endregion      // Private & Internal Methods
@@ -1432,6 +1767,9 @@ namespace System.Windows.Forms
                }
                
 #if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+               [Browsable (false)]
                [MonoTODO]
                public static bool CheckForIllegalCrossThreadCalls 
                {
@@ -1538,29 +1876,43 @@ namespace System.Windows.Forms
                        }
 
                        set {
+                               layout_type = LayoutType.Anchor;
+
                                anchor_style=value;
 
-                               if (parent != null) {
-                                       parent.PerformLayout(this, "Parent");
-                               }
+                               UpdateDistances ();
+
+                               if (parent != null)
+                                       parent.PerformLayout(this, "Anchor");
                        }
                }
 
 #if NET_2_0
                // XXX: Implement me!
                bool auto_size;
-
+               
+               [RefreshProperties (RefreshProperties.All)]
+               [Localizable (true)]
+               [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+               [Browsable (false)]
+               [EditorBrowsable (EditorBrowsableState.Never)]
+               [DefaultValue (false)]
+               [MonoTODO("This method currently does nothing")]
                public virtual bool AutoSize {
-                       get {
-                               //Console.Error.WriteLine("Unimplemented: Control::get_AutoSize()");
-                               return auto_size;
-                       }
+                       get { return auto_size; }
                        set {
-                               Console.Error.WriteLine("Unimplemented: Control::set_AutoSize(bool)");
-                               auto_size = value;
+                               if (this.auto_size != value) {
+                                       auto_size = value;
+                                       OnAutoSizeChanged (EventArgs.Empty);
+                               }
                        }
                }
-
+               
+#if NET_2_0
+               [AmbientValue ("{Width=0, Height=0}")]
+#else
+               [AmbientValue (typeof(Size), "0, 0")]
+#endif
                public virtual Size MaximumSize {
                        get {
                                return maximum_size;
@@ -1575,7 +1927,10 @@ namespace System.Windows.Forms
                                return minimum_size;
                        }
                        set {
-                               minimum_size = value;
+                               if (minimum_size != value) {
+                                       minimum_size = value;
+                                       PerformLayout ();
+                               }
                        }
                }
 #endif // NET_2_0
@@ -1621,10 +1976,31 @@ namespace System.Windows.Forms
                                if (background_image!=value) {
                                        background_image=value;
                                        OnBackgroundImageChanged(EventArgs.Empty);
+                                       Invalidate ();
                                }
                        }
                }
 
+#if NET_2_0
+               [DefaultValue (ImageLayout.Tile)]
+               [Localizable (true)]
+               public virtual ImageLayout BackgroundImageLayout {
+                       get {
+                               return backgroundimage_layout;
+                       }
+                       set {
+                               if (Array.IndexOf (Enum.GetValues (typeof (ImageLayout)), value) == -1)
+                                       throw new InvalidEnumArgumentException ("value", (int) value, typeof(ImageLayout));
+
+                               if (value != backgroundimage_layout) {
+                                       backgroundimage_layout = value;
+                                       Invalidate ();
+                                       OnBackgroundImageLayoutChanged (EventArgs.Empty);
+                               }
+                               
+                       }
+               } 
+#endif
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
@@ -1775,6 +2151,9 @@ namespace System.Windows.Forms
 
                        set {
                                this.SetClientSizeCore(value.Width, value.Height);
+#if NET_2_0
+                               this.OnClientSizeChanged (EventArgs.Empty);
+#endif
                        }
                }
 
@@ -1788,12 +2167,17 @@ namespace System.Windows.Forms
                        }
                }
 
+               internal bool ContainerSelected {
+                       get { return container_selected; }
+                       set { container_selected = value; }
+               }
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
                public bool ContainsFocus {
                        get {
-                               IntPtr  focused_window;
+                               IntPtr focused_window;
 
                                focused_window = XplatUI.GetFocus();
                                if (IsHandleCreated) {
@@ -1810,12 +2194,14 @@ namespace System.Windows.Forms
                                return false;
                        }
                }
-
+#if NET_2_0
+               [Browsable (false)]
+#endif
                [DefaultValue(null)]
                [MWFCategory("Behavior")]
                public virtual ContextMenu ContextMenu {
                        get {
-                               return context_menu;
+                               return GetContextMenuInternal ();
                        }
 
                        set {
@@ -1826,6 +2212,24 @@ namespace System.Windows.Forms
                        }
                }
 
+               internal virtual ContextMenu GetContextMenuInternal ()
+               {
+                       return context_menu;
+               }
+
+#if NET_2_0
+               [DefaultValue (null)]
+               public virtual ContextMenuStrip ContextMenuStrip {
+                       get { return this.context_menu_strip; }
+                       set { 
+                               if (this.context_menu_strip != value) {
+                                       this.context_menu_strip = value;
+                                       OnContextMenuStripChanged (EventArgs.Empty);
+                               }
+                       }
+               }
+#endif
+
                [Browsable(false)]
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
                public ControlCollection Controls {
@@ -1860,7 +2264,7 @@ namespace System.Windows.Forms
 
                        set {
                                if (cursor != value) {
-                                       Point   pt;
+                                       Point pt;
 
                                        cursor = value;
                                        
@@ -1928,20 +2332,53 @@ namespace System.Windows.Forms
                        }
 
                        set {
+                               layout_type = LayoutType.Dock;
+
                                if (dock_style == value) {
                                        return;
                                }
 
+                               if (!Enum.IsDefined (typeof (DockStyle), value)) {
+                                       throw new InvalidEnumArgumentException ("value", (int) value,
+                                               typeof (DockStyle));
+                               }
+
                                dock_style = value;
 
+                               if (dock_style == DockStyle.None) {
+                                       if (explicit_bounds == Rectangle.Empty)
+                                               Bounds = new Rectangle (new Point (0, 0), DefaultSize);
+                                       else
+                                               Bounds = explicit_bounds;
+                               }
+
                                if (parent != null) {
-                                       parent.PerformLayout(this, "Parent");
+                                       parent.PerformLayout(this, "Dock");
                                }
 
                                OnDockChanged(EventArgs.Empty);
                        }
                }
 
+#if NET_2_0
+               protected virtual bool DoubleBuffered {
+                       get {
+                               return (control_style & ControlStyles.OptimizedDoubleBuffer) != 0;
+                       }
+
+                       set {
+                               if (value == DoubleBuffered)
+                                       return;
+                               if (value) {
+                                       SetStyle (ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
+                               } else {
+                                       SetStyle (ControlStyles.OptimizedDoubleBuffer, false);
+                               }
+                               
+                       }
+               }
+#endif
+               
                [DispId(-514)]
                [Localizable(true)]
                [MWFCategory("Behavior")]
@@ -1959,21 +2396,20 @@ namespace System.Windows.Forms
                        }
 
                        set {
-                               if (Enabled == value) {
-                                       is_enabled = value;
-                                       return;
-                               }
-
-                               is_enabled = value;
+                               if (this.is_enabled != value) {
+                                       bool old_value = is_enabled;
 
-                               // FIXME - we need to switch focus to next control if we're disabling the focused control
+                                       is_enabled = value;
+                                       if (old_value != value && !value && this.has_focus)
+                                               SelectNextControl(this, true, true, true, true);
 
-                               OnEnabledChanged (EventArgs.Empty);                             
+                                       OnEnabledChanged (EventArgs.Empty);
+                               }
                        }
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
-               [Browsable(false)]
+               [Browsable(false)]
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
                public virtual bool Focused {
                        get {
@@ -1982,7 +2418,7 @@ namespace System.Windows.Forms
                }
 
                [DispId(-512)]
-               [AmbientValue(null)]
+               [AmbientValue(null)]
                [Localizable(true)]
                [MWFCategory("Appearance")]
                public virtual Font Font {
@@ -2004,9 +2440,10 @@ namespace System.Windows.Forms
                                        return;
                                }
 
-                               font = value;   
+                               font = value;
                                Invalidate();
-                               OnFontChanged (EventArgs.Empty);                                
+                               OnFontChanged (EventArgs.Empty);
+                               PerformLayout ();
                        }
                }
 
@@ -2081,12 +2518,12 @@ namespace System.Windows.Forms
                [MWFCategory("Behavior")]
                public ImeMode ImeMode {
                        get {
-                                if (ime_mode == DefaultImeMode) {
-                                       if (parent != null)
-                                                return parent.ImeMode;
-                                        else
-                                                return ImeMode.NoControl; // default value
-                                }
+                               if (ime_mode == ImeMode.Inherit) {
+                                       if (parent != null)
+                                               return parent.ImeMode;
+                                       else
+                                               return ImeMode.NoControl; // default value
+                               }
                                return ime_mode;
                        }
 
@@ -2100,7 +2537,7 @@ namespace System.Windows.Forms
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
-               [Browsable(false)]
+               [Browsable(false)]
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
                public bool InvokeRequired {                                            // ISynchronizeInvoke
                        get {
@@ -2148,11 +2585,18 @@ namespace System.Windows.Forms
                        }
                }
 
+               [Browsable (false)]
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
 #if NET_2_0
-               public virtual Layout.LayoutEngine LayoutEngine {
-                       get { return this.layout_engine; }
-               } 
+               public virtual
 #endif
+               Layout.LayoutEngine LayoutEngine {
+                       get {
+                               if (layout_engine == null)
+                                       layout_engine = new Layout.DefaultLayout ();
+                               return layout_engine;
+                       }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Always)]
                [Browsable(false)]
@@ -2183,7 +2627,12 @@ namespace System.Windows.Forms
                [Localizable (true)]
                public Padding Margin {
                        get { return this.margin; }
-                       set { this.margin = value; }
+                       set { 
+                               if (this.margin != value) {
+                                       this.margin = value; 
+                                       OnMarginChanged (EventArgs.Empty);
+                               }
+                       }
                }
 #endif
 
@@ -2206,7 +2655,11 @@ namespace System.Windows.Forms
                        }
 
                        set {
-                               padding = value;
+                               if (padding != value) {
+                                       padding = value;
+                                       OnPaddingChanged (EventArgs.Empty);
+                                       PerformLayout ();
+                               }
                        }
                }
 #endif
@@ -2240,13 +2693,13 @@ namespace System.Windows.Forms
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
                public string ProductName {
                        get {
-                                Type t = typeof (AssemblyProductAttribute);
-                                Assembly assembly = GetType().Module.Assembly;
-                                object [] attrs = assembly.GetCustomAttributes (t, false);
-                                AssemblyProductAttribute a = null;
-                                // On MS we get a NullRefException if product attribute is not
-                                // set. 
-                               if (attrs != null && attrs.Length > 0)
+                               Type t = typeof (AssemblyProductAttribute);
+                               Assembly assembly = GetType().Module.Assembly;
+                               object [] attrs = assembly.GetCustomAttributes (t, false);
+                               AssemblyProductAttribute a = null;
+                               // On MS we get a NullRefException if product attribute is not
+                               // set. 
+                               if (attrs != null && attrs.Length > 0)
                                        a = (AssemblyProductAttribute) attrs [0];
                                return a.Product;
                        }
@@ -2284,10 +2737,15 @@ namespace System.Windows.Forms
                        }
 
                        set {
-                               if (IsHandleCreated) {
-                                       XplatUI.SetClipRegion(Handle, value);
+                               if (clip_region != value) {
+                                       if (value != null && IsHandleCreated)
+                                               XplatUI.SetClipRegion(Handle, value);
+
+                                       clip_region = value;
+#if NET_2_0
+                                       OnRegionChanged (EventArgs.Empty);
+#endif
                                }
-                               clip_region = value;
                        }
                }
 
@@ -2318,6 +2776,7 @@ namespace System.Windows.Forms
                                if (value != right_to_left) {
                                        right_to_left = value;
                                        OnRightToLeftChanged(EventArgs.Empty);
+                                       PerformLayout ();
                                }
                        }
                }
@@ -2331,12 +2790,14 @@ namespace System.Windows.Forms
                        set {
                                base.Site = value;
 
-                               AmbientProperties ap = (AmbientProperties) value.GetService (typeof (AmbientProperties));
-                               if (ap != null) {
-                                       BackColor = ap.BackColor;
-                                       ForeColor = ap.ForeColor;
-                                       Cursor = ap.Cursor;
-                                       Font = ap.Font;
+                               if (value != null) {
+                                       AmbientProperties ap = (AmbientProperties) value.GetService (typeof (AmbientProperties));
+                                       if (ap != null) {
+                                               BackColor = ap.BackColor;
+                                               ForeColor = ap.ForeColor;
+                                               Cursor = ap.Cursor;
+                                               Font = ap.Font;
+                                       }
                                }
                        }
                }
@@ -2582,6 +3043,10 @@ namespace System.Windows.Forms
                        }
                }
 
+#if NET_2_0
+               protected virtual Cursor DefaultCursor { get { return Cursors.Default; } }
+#endif
+
                protected virtual ImeMode DefaultImeMode {
                        get {
                                return ImeMode.Inherit;
@@ -2592,6 +3057,10 @@ namespace System.Windows.Forms
                protected virtual Padding DefaultMargin {
                        get { return new Padding (3); }
                }
+               
+               protected virtual Size DefaultMaximumSize { get { return new Size (); } }
+               protected virtual Size DefaultMinimumSize { get { return new Size (); } }
+               protected virtual Padding DefaultPadding { get { return new Padding (); } }
 #endif
 
                protected virtual Size DefaultSize {
@@ -2609,7 +3078,9 @@ namespace System.Windows.Forms
                                ;; // Nothing to do
                        }
                }
-
+#if NET_2_0
+               [Obsolete ()]
+#endif
                protected bool RenderRightToLeft {
                        get {
                                return (this.right_to_left == RightToLeft.Yes);
@@ -2638,6 +3109,9 @@ namespace System.Windows.Forms
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
                [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
+#if NET_2_0
+               internal virtual
+#endif
                protected bool ShowKeyboardCues {
                        get {
                                return true;
@@ -2657,7 +3131,7 @@ namespace System.Windows.Forms
                }
 
                public static bool IsMnemonic(char charCode, string text) {
-                       int amp;                        
+                       int amp;
 
                        amp = text.IndexOf('&');
 
@@ -2722,7 +3196,8 @@ namespace System.Windows.Forms
                        return false;
                }
 
-               public void CreateControl() {
+               public void CreateControl ()
+               {
                        if (is_disposed) {
                                throw new ObjectDisposedException(GetType().FullName.ToString());
                        }
@@ -2740,7 +3215,8 @@ namespace System.Windows.Forms
 
                        Control [] controls = child_controls.GetAllControls ();
                        for (int i=0; i<controls.Length; i++) {
-                               controls [i].CreateControl ();
+                               if (controls [i].is_visible)
+                                       controls [i].CreateControl ();
                        }
 
                        UpdateChildrenZOrder();
@@ -2781,7 +3257,9 @@ namespace System.Windows.Forms
                        }
                        return null;
                }
-
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+#endif
                public bool Focus() {
                        if (CanFocus && IsHandleCreated && !has_focus && !is_focusing) {
                                is_focusing = true;
@@ -2817,33 +3295,25 @@ namespace System.Windows.Forms
 
                public Control GetNextControl(Control ctl, bool forward) {
 
-                       if (ctl != null && this != ctl) {
-                               if (!ctl.CanSelect || 
-                                       ((parent == null) && (ctl is IContainerControl) && ctl.GetStyle(ControlStyles.ContainerControl))
-                                  ) {
-                                       if (forward) {
-                                               return FindFlatForward(this, ctl);
-                                       } else {
-                                               return FindFlatBackward(this, ctl);
-                                       }
-                               }
-                       }
-
-                       // If ctl is not contained by this, we start at the first child of this
                        if (!this.Contains(ctl)) {
-                               ctl = null;
+                               ctl = this;
                        }
 
-                       // Search through our controls, starting at ctl, stepping into children as we encounter them
-                       // try to find the control with the tabindex closest to our own, or, if we're looking into
-                       // child controls, the one with the smallest tabindex
                        if (forward) {
-                               return FindControlForward(this, ctl);
+                               ctl = FindControlForward(this, ctl);
+                       }
+                       else {
+                               ctl = FindControlBackward(this, ctl);
+                       }
+
+                       if (ctl != this) {
+                               return ctl;
                        }
-                       return FindControlBackward(this, ctl);
+                       return null;
                }
 
 #if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
                public virtual Size GetPreferredSize (Size proposedSize) {
                        return preferred_size;
                }
@@ -2866,18 +3336,22 @@ namespace System.Windows.Forms
                }
 
                public void Invalidate(System.Drawing.Rectangle rc, bool invalidateChildren) {
-                       if (!IsHandleCreated || !Visible || rc.Width == 0 || rc.Height == 0) {
+                       // Win32 invalidates control including when Width and Height is equal 0
+                       // or is not visible, only Paint event must be care about this.
+                       if (!IsHandleCreated)
                                return;
-                       }
 
-                       NotifyInvalidate(rc);
+                       if  (rc.Width > 0 && rc.Height > 0) {
 
-                       XplatUI.Invalidate(Handle, rc, false);
+                               NotifyInvalidate(rc);
 
-                       if (invalidateChildren) {
-                               Control [] controls = child_controls.GetAllControls ();
-                               for (int i=0; i<controls.Length; i++)
-                                       controls [i].Invalidate ();
+                               XplatUI.Invalidate(Handle, rc, false);
+
+                               if (invalidateChildren) {
+                                       Control [] controls = child_controls.GetAllControls ();
+                                       for (int i=0; i<controls.Length; i++)
+                                               controls [i].Invalidate ();
+                               }
                        }
                        OnInvalidated(new InvalidateEventArgs(rc));
                }
@@ -2927,6 +3401,13 @@ namespace System.Windows.Forms
                        PerformLayout(null, null);
                }
 
+               internal void SetImplicitBounds (int x, int y, int width, int height)
+               {
+                       Rectangle saved_bounds = explicit_bounds;
+                       SetBounds (x, y, width, height);
+                       explicit_bounds = saved_bounds;
+               }
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                public void PerformLayout(Control affectedControl, string affectedProperty) {
                        LayoutEventArgs levent = new LayoutEventArgs(affectedControl, affectedProperty);
@@ -2943,133 +3424,6 @@ namespace System.Windows.Forms
 
                        // Perform all Dock and Anchor calculations
                        try {
-
-#if NET_2_0
-                       this.layout_engine.Layout(this, levent);
-#else          
-                               // This has been moved to Layout/DefaultLayout.cs for 2.0, please duplicate any changes/fixes there.
-                               Control         child;
-                               AnchorStyles    anchor;
-                               Rectangle       space;
-
-                               space = DisplayRectangle;
-
-                               // Deal with docking; go through in reverse, MS docs say that lowest Z-order is closest to edge
-                               Control [] controls = child_controls.GetAllControls ();
-                               for (int i = controls.Length - 1; i >= 0; i--) {
-                                       child = controls [i];
-
-                                       if (!child.Visible) {
-                                               continue;
-                                       }
-
-                                       switch (child.Dock) {
-                                               case DockStyle.None: {
-                                                       // Do nothing
-                                                       break;
-                                               }
-
-                                               case DockStyle.Left: {
-                                                       child.SetBounds(space.Left, space.Y, child.Width, space.Height);
-                                                       space.X+=child.Width;
-                                                       space.Width-=child.Width;
-                                                       break;
-                                               }
-
-                                               case DockStyle.Top: {
-                                                       child.SetBounds(space.Left, space.Y, space.Width, child.Height);
-                                                       space.Y+=child.Height;
-                                                       space.Height-=child.Height;
-                                                       break;
-                                               }
-                                       
-                                               case DockStyle.Right: {
-                                                       child.SetBounds(space.Right-child.Width, space.Y, child.Width, space.Height);
-                                                       space.Width-=child.Width;
-                                                       break;
-                                               }
-
-                                               case DockStyle.Bottom: {
-                                                       child.SetBounds(space.Left, space.Bottom-child.Height, space.Width, child.Height);
-                                                       space.Height-=child.Height;
-                                                       break;
-                                               }
-                                       }
-                               }
-
-                               for (int i = controls.Length - 1; i >= 0; i--) {
-                                       child=controls[i];
-
-                                       //if (child.Visible && (child.Dock == DockStyle.Fill)) {
-                                       if (child.Dock == DockStyle.Fill) {
-                                               child.SetBounds(space.Left, space.Top, space.Width, space.Height);
-                                       }
-                               }
-
-                               space = DisplayRectangle;
-
-                               for (int i=0; i < controls.Length; i++) {
-                                       int left;
-                                       int top;
-                                       int width;
-                                       int height;
-
-                                       child = controls[i];
-
-                                       // If the control is docked we don't need to do anything
-                                       if (child.Dock != DockStyle.None) {
-                                               continue;
-                                       }
-
-                                       anchor = child.Anchor;
-
-                                       left = child.Left;
-                                       top = child.Top;
-                                       width = child.Width;
-                                       height = child.Height;
-
-                                       if ((anchor & AnchorStyles.Left) !=0 ) {
-                                               if ((anchor & AnchorStyles.Right) != 0) {
-                                                       width = space.Width - child.dist_right - left;
-                                               } else {
-                                                       ; // Left anchored only, nothing to be done
-                                               }
-                                       } else if ((anchor & AnchorStyles.Right) != 0) {
-                                               left = space.Width - child.dist_right - width;
-                                       } else {
-                                               // left+=diff_width/2 will introduce rounding errors (diff_width removed from svn after r51780)
-                                               // This calculates from scratch every time:
-                                               left = child.dist_left + (space.Width - (child.dist_left + width + child.dist_right)) / 2;
-                                       }
-
-                                       if ((anchor & AnchorStyles.Top) !=0 ) {
-                                               if ((anchor & AnchorStyles.Bottom) != 0) {
-                                                       height = space.Height - child.dist_bottom - top;
-                                               } else {
-                                                       ; // Top anchored only, nothing to be done
-                                               }
-                                       } else if ((anchor & AnchorStyles.Bottom) != 0) {
-                                               top = space.Height - child.dist_bottom - height;
-                                       } else {
-                                               // top += diff_height/2 will introduce rounding errors (diff_height removed from after r51780)
-                                               // This calculates from scratch every time:
-                                               top = child.dist_top + (space.Height - (child.dist_top + height + child.dist_bottom)) / 2;
-                                       }
-                                       
-                                       // Sanity
-                                       if (width < 0) {
-                                               width=0;
-                                       }
-
-                                       if (height < 0) {
-                                               height=0;
-                                       }
-
-                                       child.SetBounds(left, top, width, height);
-                               }
-#endif
-
-                               // Let everyone know
                                OnLayout(levent);
                        }
 
@@ -3135,8 +3489,8 @@ namespace System.Windows.Forms
                        return new Rectangle(PointToScreen(r.Location), r.Size);
                }
 
-               public virtual void Refresh() {                 
-                       if (IsHandleCreated == true) {
+               public virtual void Refresh() {
+                       if (IsHandleCreated) {
                                Invalidate();
                                XplatUI.UpdateWindow(window.Handle);
 
@@ -3153,7 +3507,7 @@ namespace System.Windows.Forms
                        BackColor = Color.Empty;
                }
 
-               [EditorBrowsable(EditorBrowsableState.Never)]
+               [EditorBrowsable(EditorBrowsableState.Never)]
                public void ResetBindings() {
                        data_bindings.Clear();
                }
@@ -3197,38 +3551,66 @@ namespace System.Windows.Forms
                        }
 
                        if (layout_suspended == 0) {
-                               Control [] controls = child_controls.GetAllControls ();
-                               for (int i=0; i<controls.Length; i++) {
-                                       controls [i].UpdateDistances ();
-                               }
-
                                if (performLayout && layout_pending) {
                                        PerformLayout();
                                }
                        }
                }
-
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Never)]
+               [Obsolete ()]
+#endif
                public void Scale(float ratio) {
                        ScaleCore(ratio, ratio);
                }
-
+               
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Never)]
+               [Obsolete ()]
+#endif
                public void Scale(float dx, float dy) {
                        ScaleCore(dx, dy);
                }
 
 #if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
                public void Scale(SizeF factor) {
                        ScaleCore(factor.Width, factor.Height);
                }
 #endif
 
                public void Select() {
-                       Select(false, false);
+                       if (this is ContainerControl)
+                               ContainerSelected = true;
+                       else {
+                               Control c = this.Parent;
+                               while (c != null) {
+                                       c.ContainerSelected = false;
+                                       c = c.Parent;
+                               }
+                       }
+                       Select(false, false);   
                }
 
+#if DebugFocus
+               private void printTree(Control c, string t) {
+                       foreach(Control i in c.child_controls) {
+                               Console.WriteLine("{2}{0}.TabIndex={1}", i, i.tab_index, t);
+                               printTree(i, t+"\t");
+                       }
+               }
+#endif
                public bool SelectNextControl(Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) {
                        Control c;
 
+#if DebugFocus
+                       Console.WriteLine("{0}", this.FindForm());
+                       printTree(this, "\t");
+#endif
+
+                       if (!this.Contains(ctl) || (!nested && (ctl.parent != this))) {
+                               ctl = null;
+                       }
                        c = ctl;
                        do {
                                c = GetNextControl(c, forward);
@@ -3244,7 +3626,7 @@ namespace System.Windows.Forms
                                        c.Select (true, true);
                                        return true;
                                }
-                       } while (c != ctl);     // If we wrap back to ourselves we stop
+                       } while (c != ctl); // If we wrap back to ourselves we stop
 
                        return false;
                }
@@ -3282,7 +3664,8 @@ namespace System.Windows.Forms
                        }
                }
 
-               public void Show() {
+               public void Show ()
+               {
                        if (!is_created) {
                                this.CreateControl();
                        }
@@ -3331,12 +3714,6 @@ namespace System.Windows.Forms
                        window.CreateHandle(CreateParams);
 
                        if (window.Handle != IntPtr.Zero) {
-                               lock (Control.controls) {
-                                       if (!Control.controls.Contains(window.Handle)) {
-                                               Control.controls.Add(this);
-                                       }
-                               }
-
                                creator_thread = Thread.CurrentThread;
 
                                XplatUI.EnableWindow(window.Handle, is_enabled);
@@ -3387,7 +3764,14 @@ namespace System.Windows.Forms
                        }
                }
 
-               protected bool GetStyle(ControlStyles flag) {
+#if NET_2_0
+               protected virtual AccessibleObject GetAccessibilityObjectById (int objectId)
+               {
+                       throw new NotImplementedException ();
+               }
+#endif
+
+               protected internal bool GetStyle(ControlStyles flag) {
                        return (control_style & flag) != 0;
                }
 
@@ -3674,7 +4058,11 @@ namespace System.Windows.Forms
                        return RtlTranslateAlignment(align);
                }
 
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Never)]
+#else
                [EditorBrowsable(EditorBrowsableState.Advanced)]
+#endif
                protected virtual void ScaleCore(float dx, float dy) {
                        Point   location;
                        Size    size;
@@ -3707,8 +4095,9 @@ namespace System.Windows.Forms
                        IContainerControl       container;
                        
                        container = GetContainerControl();
-                       if (container != null)
-                               container.ActiveControl = this;
+                       if (container != null && (Control)container != this)
+                if (!this.Parent.ContainerSelected)
+                                   container.ActiveControl = this;
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
@@ -3716,6 +4105,15 @@ namespace System.Windows.Forms
                        // SetBoundsCore updates the Win32 control itself. UpdateBounds updates the controls variables and fires events, I'm guessing - pdb
                        if (IsHandleCreated) {
                                XplatUI.SetWindowPos(Handle, x, y, width, height);
+
+                               // Win32 automatically changes negative width/height to 0.
+                               // The control has already been sent a WM_WINDOWPOSCHANGED message and it has the correct
+                               // data, but it'll be overwritten when we call UpdateBounds unless we get the updated
+                               // size.
+                               if (width < 0 || height < 0) {
+                                       int cw, ch, ix, iy;
+                                       XplatUI.GetWindowPos(Handle, this is Form, out ix, out iy, out width, out height, out cw, out ch);
+                               }
                        }
 
                        UpdateBounds(x, y, width, height);
@@ -3725,23 +4123,14 @@ namespace System.Windows.Forms
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void SetClientSizeCore(int x, int y) {
-                       // Calculate the actual window size from the client size (it usually stays the same or grows)
-                       Rectangle       ClientRect;
-                       Rectangle       WindowRect;
-                       CreateParams    cp;
-
-                       ClientRect = new Rectangle(0, 0, x, y);
-                       cp = this.CreateParams;
-
-                       if (XplatUI.CalculateWindowRect(ref ClientRect, cp.Style, cp.ExStyle, null, out WindowRect)==false) {
-                               return;
-                       }
-
-                       SetBounds(bounds.X, bounds.Y, WindowRect.Width, WindowRect.Height, BoundsSpecified.Size);
+                       Size NewSize = SizeFromClientSize (new Size (x, y));
+                       
+                       if (NewSize != Size.Empty)
+                               SetBounds (bounds.X, bounds.Y, NewSize.Width, NewSize.Height, BoundsSpecified.Size);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
-               protected void SetStyle(ControlStyles flag, bool value) {
+               protected internal void SetStyle(ControlStyles flag, bool value) {
                        if (value) {
                                control_style |= flag;
                        } else {
@@ -3751,7 +4140,7 @@ namespace System.Windows.Forms
 
                protected void SetTopLevel(bool value) {
                        if ((GetTopLevel() != value) && (parent != null)) {
-                               throw new Exception();
+                               throw new ArgumentException ("Cannot change toplevel style of a parented control.");
                        }
 
                        if (this is Form) {
@@ -3761,7 +4150,7 @@ namespace System.Windows.Forms
                                        }
                                } else {
                                        if (Visible) {
-                                               Visible = false;
+                                               Visible = false;
                                        }
                                }
                        }
@@ -3770,7 +4159,7 @@ namespace System.Windows.Forms
 
                protected virtual void SetVisibleCore(bool value) {
                        if (value!=is_visible) {
-                               if (value && (window.Handle == IntPtr.Zero) || !is_created) {
+                               if (value && ((window.Handle == IntPtr.Zero) || !is_created)) {
                                        CreateControl();
                                }
 
@@ -3800,11 +4189,32 @@ namespace System.Windows.Forms
                                if (parent != null) {
                                        parent.PerformLayout(this, "visible");
                                } else {
-                                       PerformLayout(this, "visible");
+                                       if (is_visible)
+                                               PerformLayout(this, "visible");
                                }
                        }
                }
-       
+
+#if NET_2_0
+               protected 
+#else
+               internal
+#endif
+               virtual Size SizeFromClientSize (Size clientSize)
+               {
+                       Rectangle ClientRect;
+                       Rectangle WindowRect;
+                       CreateParams cp;
+
+                       ClientRect = new Rectangle (0, 0, clientSize.Width, clientSize.Height);
+                       cp = this.CreateParams;
+
+                       if (XplatUI.CalculateWindowRect (ref ClientRect, cp.Style, cp.ExStyle, null, out WindowRect))
+                               return new Size (WindowRect.Width, WindowRect.Height);
+                               
+                       return Size.Empty;
+               }
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected void UpdateBounds() {
                        int     x;
@@ -3856,6 +4266,9 @@ namespace System.Windows.Forms
                        bounds.Width=width;
                        bounds.Height=height;
 
+                       // Assume explicit bounds set. SetImplicitBounds will restore old bounds
+                       explicit_bounds = bounds;
+
                        client_size.Width=clientWidth;
                        client_size.Height=clientHeight;
 
@@ -3865,6 +4278,9 @@ namespace System.Windows.Forms
 
                        if (resized) {
                                OnSizeChanged(EventArgs.Empty);
+#if NET_2_0
+                               OnClientSizeChanged (EventArgs.Empty);
+#endif
                        }
                }
 
@@ -3887,10 +4303,22 @@ namespace System.Windows.Forms
                                if (index > 0) {
                                        XplatUI.SetZOrder(child.Handle, child_controls[index - 1].Handle, false, false);
                                } else {
-                                       XplatUI.SetZOrder(child.Handle, IntPtr.Zero, true, false);
+                                       IntPtr after = AfterTopMostControl ();
+                                       if (after != IntPtr.Zero)
+                                               XplatUI.SetZOrder (child.Handle, after, false, false);
+                                       else
+                                               XplatUI.SetZOrder (child.Handle, IntPtr.Zero, true, false);
                                }
                        }
                }
+               
+               // Override this if there is a control that shall always remain on
+               // top of other controls (such as scrollbars). If there are several
+               // of these controls, the bottom-most should be returned.
+               internal virtual IntPtr AfterTopMostControl ()
+               {
+                       return IntPtr.Zero;
+               }
 
                private void UpdateChildrenZOrder() {
                        Control [] controls;
@@ -3914,423 +4342,488 @@ namespace System.Windows.Forms
 
                protected virtual void WndProc(ref Message m) {
 #if debug
-                       Console.WriteLine("Control {0} received message {1}", window.Handle == IntPtr.Zero ? this.Text : XplatUI.Window(window.Handle), (Msg)m.Msg);
+                       Console.WriteLine("Control {0} received message {1}", window.Handle == IntPtr.Zero ? this.Text : XplatUI.Window(window.Handle), m.ToString ());
 #endif
                        if ((this.control_style & ControlStyles.EnableNotifyMessage) != 0) {
                                OnNotifyMessage(m);
                        }
 
                        switch((Msg)m.Msg) {
-                               case Msg.WM_DESTROY: {
-                                       OnHandleDestroyed(EventArgs.Empty);
+                       case Msg.WM_DESTROY: {
+                               OnHandleDestroyed(EventArgs.Empty);
 #if DebugRecreate
-                                       IntPtr handle = window.Handle;
+                               IntPtr handle = window.Handle;
 #endif
-                                       window.InvalidateHandle();
+                               window.InvalidateHandle();
 
-                                       if (is_recreating) {
+                               if (is_recreating) {
 #if DebugRecreate
-                                               Console.WriteLine ("Creating handle for {0:X}", handle.ToInt32());
+                                       Console.WriteLine ("Creating handle for {0:X}", handle.ToInt32());
 #endif
-                                               CreateHandle();
+                                       CreateHandle();
 #if DebugRecreate
-                                               Console.WriteLine (" + new handle = {0:X}", Handle.ToInt32());
+                                       Console.WriteLine (" + new handle = {0:X}", Handle.ToInt32());
 #endif
-                                               is_recreating = false;
-                                       }
-                                       return;
+                                       is_recreating = false;
                                }
+                               return;
+                       }
 
-                               case Msg.WM_WINDOWPOSCHANGED: {
-                                       if (Visible) {
-                                               UpdateBounds();
-                                               if (GetStyle(ControlStyles.ResizeRedraw)) {
-                                                       Invalidate();
-                                               }
+                       case Msg.WM_WINDOWPOSCHANGED: {
+                               if (Visible) {
+                                       Rectangle save_bounds = explicit_bounds;
+                                       UpdateBounds();
+                                       explicit_bounds = save_bounds;
+                                       if (GetStyle(ControlStyles.ResizeRedraw)) {
+                                               Invalidate();
                                        }
-                                       return;
                                }
+                               return;
+                       }
 
-                               // Nice description of what should happen when handling WM_PAINT
-                               // can be found here: http://pluralsight.com/wiki/default.aspx/Craig/FlickerFreeControlDrawing.html
-                               // and here http://msdn.microsoft.com/msdnmag/issues/06/03/WindowsFormsPerformance/
-                               case Msg.WM_PAINT: {
-                                       PaintEventArgs  paint_event;
-
-                                       paint_event = XplatUI.PaintEventStart(Handle, true);
+                       // Nice description of what should happen when handling WM_PAINT
+                       // can be found here: http://pluralsight.com/wiki/default.aspx/Craig/FlickerFreeControlDrawing.html
+                       // and here http://msdn.microsoft.com/msdnmag/issues/06/03/WindowsFormsPerformance/
+                       case Msg.WM_PAINT: {
+                               PaintEventArgs  paint_event;
 
-                                       if (paint_event == null) {
-                                               return;
-                                       }
+                               paint_event = XplatUI.PaintEventStart(Handle, true);
 
-                                       if (invalid_region != null && !invalid_region.IsVisible (paint_event.ClipRectangle)) {
+                               if (paint_event == null) {
+                                       return;
+                               }
+                               DoubleBuffer current_buffer = null;
+                               if (UseDoubleBuffering) {
+                                       current_buffer = GetBackBuffer ();
+                                       if (!current_buffer.InvalidRegion.IsVisible (paint_event.ClipRectangle)) {
                                                // Just blit the previous image
-                                               paint_event.Graphics.DrawImage (ImageBuffer, paint_event.ClipRectangle, paint_event.ClipRectangle, GraphicsUnit.Pixel);
-                                               XplatUI.PaintEventEnd(Handle, true);
+                                               current_buffer.Blit (paint_event);
+                                               XplatUI.PaintEventEnd (Handle, true);
                                                return;
                                        }
+                                       current_buffer.Start (paint_event);
+                               }
+                               
+                               if (!GetStyle(ControlStyles.Opaque)) {
+                                       OnPaintBackground(paint_event);
+                               }
 
-                                       Graphics dc = null;
-                                       Graphics back_dc = null;
-                                       Bitmap backbuffer = null;
-                                       if (ThemeEngine.Current.DoubleBufferingSupported) {
-                                               if ((control_style & ControlStyles.DoubleBuffer) != 0) {
-                                                       backbuffer = ImageBuffer;
-                                                       back_dc = Graphics.FromImage (backbuffer);
-                                                       dc = paint_event.SetGraphics (back_dc);
-                                               }
-                                       }
-
-                                       if (!GetStyle(ControlStyles.Opaque)) {
-                                               OnPaintBackground(paint_event);
-                                       }
+                               // Button-derived controls choose to ignore their Opaque style, give them a chance to draw their background anyways
+                               OnPaintBackgroundInternal(paint_event);
 
-                                       // Button-derived controls choose to ignore their Opaque style, give them a chance to draw their background anyways
-                                       OnPaintBackgroundInternal(paint_event);
+                               OnPaintInternal(paint_event);
+                               if (!paint_event.Handled) {
+                                       OnPaint(paint_event);
+                               }
 
-                                       OnPaintInternal(paint_event);
-                                       if (!paint_event.Handled) {
-                                               OnPaint(paint_event);
-                                       }
+                               if (current_buffer != null) {
+                                       current_buffer.End (paint_event);
+                               }
 
-                                       if (ThemeEngine.Current.DoubleBufferingSupported)
-                                               if ((control_style & ControlStyles.DoubleBuffer) != 0) {
-                                                       dc.DrawImage (ImageBuffer, paint_event.ClipRectangle, paint_event.ClipRectangle, GraphicsUnit.Pixel);
-                                                       paint_event.SetGraphics (dc);
-                                                       invalid_region.Exclude (paint_event.ClipRectangle);
-                                                       back_dc.Dispose ();
-                                                       if (backbuffer != bmp_mem)
-                                                               backbuffer.Dispose();
-                                               }
 
-                                       XplatUI.PaintEventEnd(Handle, true);
+                               XplatUI.PaintEventEnd(Handle, true);
 
-                                       return;
-                               }
+                               return;
+                       }
                                        
-                               case Msg.WM_ERASEBKGND: {
-                                       // The DefWndProc will never have to handle this, we always paint the background in managed code
-                                       // In theory this code would look at ControlStyles.AllPaintingInWmPaint and and call OnPaintBackground
-                                       // here but it just makes things more complicated...
-                                       m.Result = (IntPtr)1;
-                                       return;
-                               }
+                       case Msg.WM_ERASEBKGND: {
+                               // The DefWndProc will never have to handle this, we always paint the background in managed code
+                               // In theory this code would look at ControlStyles.AllPaintingInWmPaint and and call OnPaintBackground
+                               // here but it just makes things more complicated...
+                               m.Result = (IntPtr)1;
+                               return;
+                       }
 
-                               case Msg.WM_LBUTTONUP: {
-                                       MouseEventArgs me;
+                       case Msg.WM_LBUTTONUP: {
+                               MouseEventArgs me;
 
-                                       me = new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()) | MouseButtons.Left, 
-                                               mouse_clicks, 
-                                               LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0);
+                               me = new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()) | MouseButtons.Left, 
+                                                        mouse_clicks, 
+                                                        LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                        0);
 
-                                       HandleClick(mouse_clicks, me);
-                                       OnMouseUp (me);
+                               HandleClick(mouse_clicks, me);
+                               OnMouseUp (me);
 
-                                       if (InternalCapture) {
-                                               InternalCapture = false;
-                                       }
+                               if (InternalCapture) {
+                                       InternalCapture = false;
+                               }
 
-                                       if (mouse_clicks > 1) {
-                                               mouse_clicks = 1;
-                                       }
-                                       return;
+                               if (mouse_clicks > 1) {
+                                       mouse_clicks = 1;
                                }
+                               return;
+                       }
                                        
-                               case Msg.WM_LBUTTONDOWN: {
-                                       if (CanSelect) {
-                                               Select (true, true);
-                                       }
-                                       InternalCapture = true;
-                                       OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
-                                               
-                                       return;
-                               }
-
-                               case Msg.WM_LBUTTONDBLCLK: {
-                                       InternalCapture = true;
-                                       mouse_clicks++;
-                                       OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
+                       case Msg.WM_LBUTTONDOWN: {
+                               if (CanSelect) {
+                                       Select (true, true);
+                               }
+                               InternalCapture = true;
+                               OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                0));
+                               
+                               return;
+                       }
 
-                                       return;
-                               }
+                       case Msg.WM_LBUTTONDBLCLK: {
+                               InternalCapture = true;
+                               mouse_clicks++;
+                               OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                0));
+                               return;
+                       }
 
-                               case Msg.WM_MBUTTONUP: {
-                                       MouseEventArgs me;
+                       case Msg.WM_MBUTTONUP: {
+                               MouseEventArgs me;
 
-                                       me = new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()) | MouseButtons.Middle, 
-                                               mouse_clicks, 
-                                               LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0);
+                               me = new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()) | MouseButtons.Middle, 
+                                                        mouse_clicks, 
+                                                        LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                        0);
 
-                                       HandleClick(mouse_clicks, me);
-                                       OnMouseUp (me);
-                                       if (InternalCapture) {
-                                               InternalCapture = false;
-                                       }
-                                       if (mouse_clicks > 1) {
-                                               mouse_clicks = 1;
-                                       }
-                                       return;
+                               HandleClick(mouse_clicks, me);
+                               OnMouseUp (me);
+                               if (InternalCapture) {
+                                       InternalCapture = false;
                                }
-                                       
-                               case Msg.WM_MBUTTONDOWN: {                                      
-                                       InternalCapture = true;
-                                       OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
-                                               
-                                       return;
+                               if (mouse_clicks > 1) {
+                                       mouse_clicks = 1;
                                }
+                               return;
+                       }
+                                       
+                       case Msg.WM_MBUTTONDOWN: {                                      
+                               InternalCapture = true;
+                               OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                0));
+                               return;
+                       }
 
-                               case Msg.WM_MBUTTONDBLCLK: {
-                                       InternalCapture = true;
-                                       mouse_clicks++;
-                                       OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
-                                       return;
-                               }
+                       case Msg.WM_MBUTTONDBLCLK: {
+                               InternalCapture = true;
+                               mouse_clicks++;
+                               OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                0));
+                               return;
+                       }
 
-                               case Msg.WM_RBUTTONUP: {
-                                       MouseEventArgs  me;
-                                       Point           pt;
+                       case Msg.WM_RBUTTONUP: {
+                               MouseEventArgs  me;
+                               Point           pt;
 
-                                       pt = new Point(LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()));
-                                       pt = PointToScreen(pt);
+                               pt = new Point(LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()));
+                               pt = PointToScreen(pt);
 
-                                       XplatUI.SendMessage(m.HWnd, Msg.WM_CONTEXTMENU, m.HWnd, (IntPtr)(pt.X + (pt.Y << 16)));
+                               XplatUI.SendMessage(m.HWnd, Msg.WM_CONTEXTMENU, m.HWnd, (IntPtr)(pt.X + (pt.Y << 16)));
 
-                                       me = new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()) | MouseButtons.Right, 
-                                               mouse_clicks, 
-                                               LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0);
+                               me = new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()) | MouseButtons.Right, 
+                                                        mouse_clicks, 
+                                                        LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                        0);
 
-                                       HandleClick(mouse_clicks, me);
-                                       OnMouseUp (me);
+                               HandleClick(mouse_clicks, me);
+                               OnMouseUp (me);
 
-                                       if (InternalCapture) {
-                                               InternalCapture = false;
-                                       }
+                               if (InternalCapture) {
+                                       InternalCapture = false;
+                               }
 
-                                       if (mouse_clicks > 1) {
-                                               mouse_clicks = 1;
-                                       }
-                                       return;
+                               if (mouse_clicks > 1) {
+                                       mouse_clicks = 1;
                                }
+                               return;
+                       }
                                        
-                               case Msg.WM_RBUTTONDOWN: {                                      
-                                       InternalCapture = true;
-                                       OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
-                                       return;
-                               }
+                       case Msg.WM_RBUTTONDOWN: {                                      
+                               InternalCapture = true;
+                               OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                0));
+                               return;
+                       }
 
-                               case Msg.WM_RBUTTONDBLCLK: {
-                                       InternalCapture = true;
-                                       mouse_clicks++;
-                                       OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
-                                       return;
-                               }
+                       case Msg.WM_RBUTTONDBLCLK: {
+                               InternalCapture = true;
+                               mouse_clicks++;
+                               OnMouseDown (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                0));
+                               return;
+                       }
 
-                               case Msg.WM_CONTEXTMENU: {
-                                       if (context_menu != null) {
-                                               Point   pt;
+                       case Msg.WM_CONTEXTMENU: {
+                               if (context_menu != null) {
+                                       Point   pt;
 
-                                               pt = new Point(LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()));
-                                               context_menu.Show(this, PointToClient(pt));
-                                               return;
-                                       }
+                                       pt = new Point(LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()));
 
-                                       DefWndProc(ref m);
+                                       if (pt.X == -1 || pt.Y == -1) {
+                                               pt.X = (this.Width / 2) + this.Left;
+                                               pt.Y = (this.Height / 2) + this.Top;
+                                               pt = this.PointToScreen (pt);
+                                       }
+                                       
+                                       context_menu.Show (this, PointToClient (pt));
                                        return;
                                }
 
-                               case Msg.WM_MOUSEWHEEL: {                               
-                                       DefWndProc(ref m);
-                                       OnMouseWheel (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               HighOrder(m.WParam.ToInt32())));
-                                       return;
-                               }
+#if NET_2_0
+                               // If there isn't a regular context menu, show the Strip version
+                               if (context_menu == null && context_menu_strip != null) {
+                                       Point pt;
 
+                                       pt = new Point (LowOrder ((int)m.LParam.ToInt32 ()), HighOrder ((int)m.LParam.ToInt32 ()));
                                        
-                               case Msg.WM_MOUSEMOVE: {                                        
-                                       OnMouseMove  (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
-                                               mouse_clicks, 
-                                               LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
-                                               0));
-                                       return;
-                               }
-
-                               case Msg.WM_MOUSE_ENTER: {
-                                       if (is_entered) {
-                                               return;
+                                       if (pt.X == -1 || pt.Y == -1) { 
+                                               pt.X = (this.Width / 2) + this.Left; 
+                                               pt.Y = (this.Height /2) + this.Top; 
+                                               pt = this.PointToScreen (pt);
                                        }
-                                       is_entered = true;
-                                       OnMouseEnter(EventArgs.Empty);
+                                       
+                                       context_menu_strip.Show (this, PointToClient (pt));
                                        return;
                                }
+#endif
+                               DefWndProc(ref m);
+                               return;
+                       }
 
-                               case Msg.WM_MOUSE_LEAVE: {
-                                       is_entered=false;
-                                       OnMouseLeave(EventArgs.Empty);
-                                       return;
-                               }
+                       case Msg.WM_MOUSEWHEEL: {                               
+                               DefWndProc(ref m);
+                               OnMouseWheel (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                 mouse_clicks, LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                 HighOrder(m.WParam.ToInt32())));
+                               return;
+                       }
 
-                               case Msg.WM_MOUSEHOVER: {
-                                       OnMouseHover(EventArgs.Empty);
+
+                       case Msg.WM_MOUSEMOVE: {                                        
+                               OnMouseMove  (new MouseEventArgs (FromParamToMouseButtons ((int) m.WParam.ToInt32()), 
+                                                                 mouse_clicks, 
+                                                                 LowOrder ((int) m.LParam.ToInt32 ()), HighOrder ((int) m.LParam.ToInt32 ()), 
+                                                                 0));
+                               return;
+                       }
+
+                       case Msg.WM_MOUSE_ENTER: {
+                               if (is_entered) {
                                        return;
                                }
+                               is_entered = true;
+                               OnMouseEnter(EventArgs.Empty);
+                               return;
+                       }
 
-                               case Msg.WM_SYSKEYUP: {
-                                       if (ProcessKeyMessage(ref m)) {
-                                               m.Result = IntPtr.Zero;
-                                               return;
-                                       }
-
-                                       if ((m.WParam.ToInt32() & (int)Keys.KeyCode) == (int)Keys.Menu) {
-                                               Form    form;
+                       case Msg.WM_MOUSE_LEAVE: {
+                               is_entered=false;
+                               OnMouseLeave(EventArgs.Empty);
+                               return;
+                       }
 
-                                               form = FindForm();
-                                               if (form != null && form.ActiveMenu != null) {
-                                                       form.ActiveMenu.ProcessCmdKey(ref m, (Keys)m.WParam.ToInt32());
-                                               }
-                                       }
+                       case Msg.WM_MOUSEHOVER: {
+                               OnMouseHover(EventArgs.Empty);
+                               return;
+                       }
 
-                                       DefWndProc (ref m);
+                       case Msg.WM_SYSKEYUP: {
+                               if (ProcessKeyMessage(ref m)) {
+                                       m.Result = IntPtr.Zero;
                                        return;
                                }
 
-                               case Msg.WM_SYSKEYDOWN:
-                               case Msg.WM_KEYDOWN:
-                               case Msg.WM_KEYUP:
-                               case Msg.WM_SYSCHAR:
-                               case Msg.WM_CHAR: {
-                                       if (ProcessKeyMessage(ref m)) {
-                                               m.Result = IntPtr.Zero;
-                                               return;
+                               if ((m.WParam.ToInt32() & (int)Keys.KeyCode) == (int)Keys.Menu) {
+                                       Form    form;
+
+                                       form = FindForm();
+                                       if (form != null && form.ActiveMenu != null) {
+                                               form.ActiveMenu.ProcessCmdKey(ref m, (Keys)m.WParam.ToInt32());
                                        }
-                                       DefWndProc (ref m);
-                                       return;
                                }
 
-                               case Msg.WM_HELP: {
-                                       Point   mouse_pos;
-                                       if (m.LParam != IntPtr.Zero) {
-                                               HELPINFO        hi;
-
-                                               hi = new HELPINFO();
+                               DefWndProc (ref m);
+                               return;
+                       }
 
-                                               hi = (HELPINFO) Marshal.PtrToStructure (m.LParam, typeof (HELPINFO));
-                                               mouse_pos = new Point(hi.MousePos.x, hi.MousePos.y);
-                                       } else {
-                                               mouse_pos = Control.MousePosition;
-                                       }
-                                       OnHelpRequested(new HelpEventArgs(mouse_pos));
-                                       m.Result = (IntPtr)1;
+                       case Msg.WM_SYSKEYDOWN:
+                       case Msg.WM_KEYDOWN:
+                       case Msg.WM_KEYUP:
+                       case Msg.WM_SYSCHAR:
+                       case Msg.WM_CHAR: {
+                               if (ProcessKeyMessage(ref m)) {
+                                       m.Result = IntPtr.Zero;
                                        return;
                                }
+                               DefWndProc (ref m);
+                               return;
+                       }
 
-                               case Msg.WM_KILLFOCUS: {
-                                       this.has_focus = false;
-                                       OnLostFocusInternal (EventArgs.Empty);
-                                       return;
+                       case Msg.WM_HELP: {
+                               Point   mouse_pos;
+                               if (m.LParam != IntPtr.Zero) {
+                                       HELPINFO        hi;
+
+                                       hi = new HELPINFO();
+
+                                       hi = (HELPINFO) Marshal.PtrToStructure (m.LParam, typeof (HELPINFO));
+                                       mouse_pos = new Point(hi.MousePos.x, hi.MousePos.y);
+                               } else {
+                                       mouse_pos = Control.MousePosition;
                                }
+                               OnHelpRequested(new HelpEventArgs(mouse_pos));
+                               m.Result = (IntPtr)1;
+                               return;
+                       }
 
-                               case Msg.WM_SETFOCUS: {
-                                       if (!has_focus) {
-                                               this.has_focus = true;
-                                               OnGotFocusInternal (EventArgs.Empty);
-                                       }
-                                       return;
+                       case Msg.WM_KILLFOCUS: {
+                               this.has_focus = false;
+                               OnLostFocusInternal (EventArgs.Empty);
+                               return;
+                       }
+
+                       case Msg.WM_SETFOCUS: {
+                               if (!has_focus) {                
+                    if (this.Parent != null && this.Parent.ContainerSelected)
+                        return;
+                    this.has_focus = true;
+                    OnGotFocusInternal (EventArgs.Empty);
                                }
+                               return;
+                       }
                                        
+                       case Msg.WM_SYSCOLORCHANGE: {
+                               ThemeEngine.Current.ResetDefaults();
+                               OnSystemColorsChanged(EventArgs.Empty);
+                               return;
+                       }
 
-                               case Msg.WM_SYSCOLORCHANGE: {
-                                       ThemeEngine.Current.ResetDefaults();
-                                       OnSystemColorsChanged(EventArgs.Empty);
+                       case Msg.WM_SETCURSOR: {
+                               if ((cursor == null) || ((HitTest)(m.LParam.ToInt32() & 0xffff) != HitTest.HTCLIENT)) {
+                                       DefWndProc(ref m);
                                        return;
                                }
-                                       
 
-                               case Msg.WM_SETCURSOR: {
-                                       if ((cursor == null) || ((HitTest)(m.LParam.ToInt32() & 0xffff) != HitTest.HTCLIENT)) {
-                                               DefWndProc(ref m);
-                                               return;
-                                       }
-
-                                       XplatUI.SetCursor(window.Handle, cursor.handle);
-                                       m.Result = (IntPtr)1;
+                               XplatUI.SetCursor(window.Handle, cursor.handle);
+                               m.Result = (IntPtr)1;
 
-                                       return;
-                               }
+                               return;
+                       }
 
-                               default: {
-                                       DefWndProc(ref m);      
-                                       return;
-                               }
+                       default:
+                               DefWndProc(ref m);
+                               return;
                        }
                }
                #endregion      // Public Instance Methods
 
                #region OnXXX methods
-               [EditorBrowsable(EditorBrowsableState.Advanced)]
+#if NET_2_0
+               protected virtual void OnAutoSizeChanged (EventArgs e)
+               {
+                       EventHandler eh = (EventHandler)(Events[AutoSizeChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+#endif
+
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
                protected virtual void OnBackColorChanged(EventArgs e) {
-                       if (BackColorChanged!=null) BackColorChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [BackColorChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                        for (int i=0; i<child_controls.Count; i++) child_controls[i].OnParentBackColorChanged(e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnBackgroundImageChanged(EventArgs e) {
-                       if (BackgroundImageChanged!=null) BackgroundImageChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [BackgroundImageChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                        for (int i=0; i<child_controls.Count; i++) child_controls[i].OnParentBackgroundImageChanged(e);
                }
 
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnBackgroundImageLayoutChanged (EventArgs e)
+               {
+                       EventHandler eh = (EventHandler)(Events[BackgroundImageLayoutChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+#endif
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnBindingContextChanged(EventArgs e) {
                        CheckDataBindings ();
-                       if (BindingContextChanged!=null) {
-                               BindingContextChanged(this, e);
-                       }
+                       EventHandler eh = (EventHandler)(Events [BindingContextChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                        for (int i=0; i<child_controls.Count; i++) child_controls[i].OnParentBindingContextChanged(e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnCausesValidationChanged(EventArgs e) {
-                       if (CausesValidationChanged!=null) CausesValidationChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [CausesValidationChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnChangeUICues(UICuesEventArgs e) {
-                       if (ChangeUICues!=null) ChangeUICues(this, e);
+                       UICuesEventHandler eh = (UICuesEventHandler)(Events [ChangeUICuesEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnClick(EventArgs e) {
-                       if (Click!=null) Click(this, e);
+                       EventHandler eh = (EventHandler)(Events [ClickEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnClientSizeChanged (EventArgs e)
+               {
+                       EventHandler eh = (EventHandler)(Events[ClientSizeChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+#endif
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnContextMenuChanged(EventArgs e) {
-                       if (ContextMenuChanged!=null) ContextMenuChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [ContextMenuChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnContextMenuStripChanged (EventArgs e) {
+                       EventHandler eh = (EventHandler)(Events [ContextMenuStripChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+#endif
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnControlAdded(ControlEventArgs e) {
-                       if (ControlAdded!=null) ControlAdded(this, e);
+                       ControlEventHandler eh = (ControlEventHandler)(Events [ControlAddedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnControlRemoved(ControlEventArgs e) {
-                       if (ControlRemoved!=null) ControlRemoved(this, e);
+                       ControlEventHandler eh = (ControlEventHandler)(Events [ControlRemovedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
@@ -4340,37 +4833,51 @@ namespace System.Windows.Forms
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnCursorChanged(EventArgs e) {
-                       if (CursorChanged!=null) CursorChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [CursorChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnDockChanged(EventArgs e) {
-                       if (DockChanged!=null) DockChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [DockChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnDoubleClick(EventArgs e) {
-                       if (DoubleClick!=null) DoubleClick(this, e);
+                       EventHandler eh = (EventHandler)(Events [DoubleClickEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnDragDrop(DragEventArgs drgevent) {
-                       if (DragDrop!=null) DragDrop(this, drgevent);
+                       DragEventHandler eh = (DragEventHandler)(Events [DragDropEvent]);
+                       if (eh != null)
+                               eh (this, drgevent);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnDragEnter(DragEventArgs drgevent) {
-                       if (DragEnter!=null) DragEnter(this, drgevent);
+                       DragEventHandler eh = (DragEventHandler)(Events [DragEnterEvent]);
+                       if (eh != null)
+                               eh (this, drgevent);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnDragLeave(EventArgs e) {
-                       if (DragLeave!=null) DragLeave(this, e);
+                       EventHandler eh = (EventHandler)(Events [DragLeaveEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnDragOver(DragEventArgs drgevent) {
-                       if (DragOver!=null) DragOver(this, drgevent);
+                       DragEventHandler eh = (DragEventHandler)(Events [DragOverEvent]);
+                       if (eh != null)
+                               eh (this, drgevent);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
@@ -4386,9 +4893,9 @@ namespace System.Windows.Forms
                                Refresh();
                        }
 
-                       if (EnabledChanged != null) {
-                               EnabledChanged(this, e);
-                       }
+                       EventHandler eh = (EventHandler)(Events [EnabledChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
 
                        for (int i=0; i<child_controls.Count; i++) {
                                child_controls[i].OnParentEnabledChanged(e);
@@ -4397,150 +4904,236 @@ namespace System.Windows.Forms
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnEnter(EventArgs e) {
-                       if (Enter!=null) Enter(this, e);
+                       EventHandler eh = (EventHandler)(Events [EnterEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnFontChanged(EventArgs e) {
-                       if (FontChanged!=null) FontChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [FontChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                        for (int i=0; i<child_controls.Count; i++) child_controls[i].OnParentFontChanged(e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnForeColorChanged(EventArgs e) {
-                       if (ForeColorChanged!=null) ForeColorChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [ForeColorChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                        for (int i=0; i<child_controls.Count; i++) child_controls[i].OnParentForeColorChanged(e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnGiveFeedback(GiveFeedbackEventArgs gfbevent) {
-                       if (GiveFeedback!=null) GiveFeedback(this, gfbevent);
+                       GiveFeedbackEventHandler eh = (GiveFeedbackEventHandler)(Events [GiveFeedbackEvent]);
+                       if (eh != null)
+                               eh (this, gfbevent);
                }
                
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnGotFocus(EventArgs e) {
-                       if (GotFocus!=null) GotFocus(this, e);
+                       EventHandler eh = (EventHandler)(Events [GotFocusEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnHandleCreated(EventArgs e) {
-                       if (HandleCreated!=null) HandleCreated(this, e);
+                       EventHandler eh = (EventHandler)(Events [HandleCreatedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnHandleDestroyed(EventArgs e) {
-                       if (HandleDestroyed!=null) HandleDestroyed(this, e);
+                       EventHandler eh = (EventHandler)(Events [HandleDestroyedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
+               internal void RaiseHelpRequested (HelpEventArgs hevent)
+               {
+                       OnHelpRequested (hevent);
+               }
+               
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnHelpRequested(HelpEventArgs hevent) {
-                       if (HelpRequested!=null) HelpRequested(this, hevent);
+                       HelpEventHandler eh = (HelpEventHandler)(Events [HelpRequestedEvent]);
+                       if (eh != null)
+                               eh (this, hevent);
                }
 
                protected virtual void OnImeModeChanged(EventArgs e) {
-                       if (ImeModeChanged!=null) ImeModeChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [ImeModeChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnInvalidated(InvalidateEventArgs e) {
-                       if (ThemeEngine.Current.DoubleBufferingSupported)
-                               if ((control_style & ControlStyles.DoubleBuffer) != 0) {
-                                       // should this block be here?  seems like it
-                                       // would be more at home in
-                                       // NotifyInvalidated..
-                                       if (e.InvalidRect == ClientRectangle) {
-                                               ImageBufferNeedsRedraw ();
-                                       }
-                                       else {
-                                               // we need this Inflate call here so
-                                               // that the border of the rectangle is
-                                               // considered Visible (the
-                                               // invalid_region.IsVisible call) in
-                                               // the WM_PAINT handling below.
-                                               Rectangle r = Rectangle.Inflate(e.InvalidRect, 1,1);
-                                               if (invalid_region == null)
-                                                       invalid_region = new Region (r);
-                                               else
-                                                       invalid_region.Union (r);
-                                       }
+                       if (UseDoubleBuffering) {
+                               // should this block be here?  seems like it
+                               // would be more at home in
+                               // NotifyInvalidated..
+                               if (e.InvalidRect == ClientRectangle) {
+                                       InvalidateBackBuffer ();
+                               } else if (backbuffer != null){
+                                       // we need this Inflate call here so
+                                       // that the border of the rectangle is
+                                       // considered Visible (the
+                                       // invalid_region.IsVisible call) in
+                                       // the WM_PAINT handling below.
+                                       Rectangle r = Rectangle.Inflate(e.InvalidRect, 1,1);
+                                       backbuffer.InvalidRegion.Union (r);
                                }
-                       if (Invalidated!=null) Invalidated(this, e);
+                       }
+
+                       InvalidateEventHandler eh = (InvalidateEventHandler)(Events [InvalidatedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
-               protected virtual void OnKeyDown(KeyEventArgs e) {                      
-                       if (KeyDown!=null) KeyDown(this, e);
+               protected virtual void OnKeyDown(KeyEventArgs e) {
+                       KeyEventHandler eh = (KeyEventHandler)(Events [KeyDownEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnKeyPress(KeyPressEventArgs e) {
-                       if (KeyPress!=null) KeyPress(this, e);
+                       KeyPressEventHandler eh = (KeyPressEventHandler)(Events [KeyPressEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnKeyUp(KeyEventArgs e) {
-                       if (KeyUp!=null) KeyUp(this, e);
+                       KeyEventHandler eh = (KeyEventHandler)(Events [KeyUpEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnLayout(LayoutEventArgs levent) {
-                       if (Layout!=null) Layout(this, levent);
+                       LayoutEventHandler eh = (LayoutEventHandler)(Events [LayoutEvent]);
+                       if (eh != null)
+                               eh (this, levent);
+
+                       LayoutEngine.Layout (this, levent);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnLeave(EventArgs e) {
-                       if (Leave!=null) Leave(this, e);
+                       EventHandler eh = (EventHandler)(Events [LeaveEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnLocationChanged(EventArgs e) {
                        OnMove(e);
-                       if (LocationChanged!=null) LocationChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [LocationChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnLostFocus(EventArgs e) {
-                       if (LostFocus!=null) LostFocus(this, e);
+                       EventHandler eh = (EventHandler)(Events [LostFocusEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
+#if NET_2_0
+               protected virtual void OnMarginChanged (EventArgs e)
+               {
+                       EventHandler eh = (EventHandler)(Events[MarginChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnMouseCaptureChanged (EventArgs e)
+               {
+                       EventHandler eh = (EventHandler)(Events [MouseCaptureChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnMouseClick (MouseEventArgs e)
+               {
+                       MouseEventHandler eh = (MouseEventHandler)(Events [MouseClickEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnMouseDoubleClick (MouseEventArgs e)
+               {
+                       MouseEventHandler eh = (MouseEventHandler)(Events [MouseDoubleClickEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+#endif
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMouseDown(MouseEventArgs e) {
-                       if (MouseDown!=null) MouseDown(this, e);
+                       MouseEventHandler eh = (MouseEventHandler)(Events [MouseDownEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMouseEnter(EventArgs e) {
-                       if (MouseEnter!=null) MouseEnter(this, e);
+                       EventHandler eh = (EventHandler)(Events [MouseEnterEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMouseHover(EventArgs e) {
-                       if (MouseHover!=null) MouseHover(this, e);
+                       EventHandler eh = (EventHandler)(Events [MouseHoverEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMouseLeave(EventArgs e) {
-                       if (MouseLeave!=null) MouseLeave(this, e);
+                       EventHandler eh = (EventHandler)(Events [MouseLeaveEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
-               protected virtual void OnMouseMove(MouseEventArgs e) {                  
-                       if (MouseMove!=null) MouseMove(this, e);
+               protected virtual void OnMouseMove(MouseEventArgs e) {
+                       MouseEventHandler eh = (MouseEventHandler)(Events [MouseMoveEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMouseUp(MouseEventArgs e) {
-                       if (MouseUp!=null) MouseUp(this, e);
+                       MouseEventHandler eh = (MouseEventHandler)(Events [MouseUpEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMouseWheel(MouseEventArgs e) {
-                       if (MouseWheel!=null) MouseWheel(this, e);
+                       MouseEventHandler eh = (MouseEventHandler)(Events [MouseWheelEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnMove(EventArgs e) {
-                       if (Move!=null) Move(this, e);
+                       EventHandler eh = (EventHandler)(Events [MoveEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
@@ -4548,9 +5141,19 @@ namespace System.Windows.Forms
                        // Override me!
                }
 
+#if NET_2_0
+               protected virtual void OnPaddingChanged (EventArgs e) {
+                       EventHandler eh = (EventHandler) (Events [PaddingChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+#endif
+
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnPaint(PaintEventArgs e) {
-                       if (Paint!=null) Paint(this, e);
+                       PaintEventHandler eh = (PaintEventHandler)(Events [PaintEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                internal virtual void OnPaintBackgroundInternal(PaintEventArgs e) {
@@ -4602,7 +5205,9 @@ namespace System.Windows.Forms
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnParentChanged(EventArgs e) {
-                       if (ParentChanged!=null) ParentChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [ParentChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
@@ -4645,66 +5250,94 @@ namespace System.Windows.Forms
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnQueryContinueDrag(QueryContinueDragEventArgs e) {
-                       if (QueryContinueDrag!=null) QueryContinueDrag(this, e);
+                       QueryContinueDragEventHandler eh = (QueryContinueDragEventHandler)(Events [QueryContinueDragEvent]);
+                       if (eh != null)
+                               eh (this, e);
+               }
+
+#if NET_2_0
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+               protected virtual void OnRegionChanged (EventArgs e)
+               {
+                       EventHandler eh = (EventHandler)(Events[RegionChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
+#endif
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnResize(EventArgs e) {
-                       if (Resize!=null) Resize(this, e);
-
-                       PerformLayout(this, "bounds");
+                       PerformLayout(this, "Bounds");
 
-                       if (parent != null) {
-                               parent.PerformLayout();
-                       }
+                       EventHandler eh = (EventHandler)(Events [ResizeEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnRightToLeftChanged(EventArgs e) {
-                       if (RightToLeftChanged!=null) RightToLeftChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [RightToLeftChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                        for (int i=0; i<child_controls.Count; i++) child_controls[i].OnParentRightToLeftChanged(e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnSizeChanged(EventArgs e) {
-                       InvalidateBuffers ();
+                       DisposeBackBuffer ();
                        OnResize(e);
-                       if (SizeChanged!=null) SizeChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [SizeChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnStyleChanged(EventArgs e) {
-                       if (StyleChanged!=null) StyleChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [StyleChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnSystemColorsChanged(EventArgs e) {
-                       if (SystemColorsChanged!=null) SystemColorsChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [SystemColorsChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnTabIndexChanged(EventArgs e) {
-                       if (TabIndexChanged!=null) TabIndexChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [TabIndexChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnTabStopChanged(EventArgs e) {
-                       if (TabStopChanged!=null) TabStopChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [TabStopChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnTextChanged(EventArgs e) {
-                       if (TextChanged!=null) TextChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [TextChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnValidated(EventArgs e) {
-                       if (Validated!=null) Validated(this, e);
+                       EventHandler eh = (EventHandler)(Events [ValidatedEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                protected virtual void OnValidating(System.ComponentModel.CancelEventArgs e) {
-                       if (Validating!=null) Validating(this, e);
+                       CancelEventHandler eh = (CancelEventHandler)(Events [ValidatingEvent]);
+                       if (eh != null)
+                               eh (this, e);
                }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
@@ -4716,7 +5349,9 @@ namespace System.Windows.Forms
                                }
                        }
 
-                       if (VisibleChanged!=null) VisibleChanged(this, e);
+                       EventHandler eh = (EventHandler)(Events [VisibleChangedEvent]);
+                       if (eh != null)
+                               eh (this, e);
 
                        // We need to tell our kids
                        for (int i=0; i<child_controls.Count; i++) {
@@ -4728,93 +5363,479 @@ namespace System.Windows.Forms
                #endregion      // OnXXX methods
 
                #region Events
-               public event EventHandler               BackColorChanged;
-               public event EventHandler               BackgroundImageChanged;
-               public event EventHandler               BindingContextChanged;
-               public event EventHandler               CausesValidationChanged;
-               public event UICuesEventHandler         ChangeUICues;
-               public event EventHandler               Click;
-               public event EventHandler               ContextMenuChanged;
+#if NET_2_0
+               static object AutoSizeChangedEvent = new object ();
+#endif
+               static object BackColorChangedEvent = new object ();
+               static object BackgroundImageChangedEvent = new object ();
+#if NET_2_0
+               static object BackgroundImageLayoutChangedEvent = new object ();
+#endif
+               static object BindingContextChangedEvent = new object ();
+               static object CausesValidationChangedEvent = new object ();
+               static object ChangeUICuesEvent = new object ();
+               static object ClickEvent = new object ();
+#if NET_2_0
+               static object ClientSizeChangedEvent = new object ();
+#endif
+               static object ContextMenuChangedEvent = new object ();
+#if NET_2_0
+               static object ContextMenuStripChangedEvent = new object ();
+#endif
+               static object ControlAddedEvent = new object ();
+               static object ControlRemovedEvent = new object ();
+               static object CursorChangedEvent = new object ();
+               static object DockChangedEvent = new object ();
+               static object DoubleClickEvent = new object ();
+               static object DragDropEvent = new object ();
+               static object DragEnterEvent = new object ();
+               static object DragLeaveEvent = new object ();
+               static object DragOverEvent = new object ();
+               static object EnabledChangedEvent = new object ();
+               static object EnterEvent = new object ();
+               static object FontChangedEvent = new object ();
+               static object ForeColorChangedEvent = new object ();
+               static object GiveFeedbackEvent = new object ();
+               static object GotFocusEvent = new object ();
+               static object HandleCreatedEvent = new object ();
+               static object HandleDestroyedEvent = new object ();
+               static object HelpRequestedEvent = new object ();
+               static object ImeModeChangedEvent = new object ();
+               static object InvalidatedEvent = new object ();
+               static object KeyDownEvent = new object ();
+               static object KeyPressEvent = new object ();
+               static object KeyUpEvent = new object ();
+               static object LayoutEvent = new object ();
+               static object LeaveEvent = new object ();
+               static object LocationChangedEvent = new object ();
+               static object LostFocusEvent = new object ();
+#if NET_2_0
+               static object MarginChangedEvent = new object ();
+               static object MouseCaptureChangedEvent = new object ();
+               static object MouseClickEvent = new object ();
+               static object MouseDoubleClickEvent = new object ();
+#endif
+               static object MouseDownEvent = new object ();
+               static object MouseEnterEvent = new object ();
+               static object MouseHoverEvent = new object ();
+               static object MouseLeaveEvent = new object ();
+               static object MouseMoveEvent = new object ();
+               static object MouseUpEvent = new object ();
+               static object MouseWheelEvent = new object ();
+               static object MoveEvent = new object ();
+#if NET_2_0
+               static object PaddingChangedEvent = new object ();
+#endif
+               static object PaintEvent = new object ();
+               static object ParentChangedEvent = new object ();
+#if NET_2_0
+               static object PreviewKeyDownEvent = new object ();
+#endif
+               static object QueryAccessibilityHelpEvent = new object ();
+               static object QueryContinueDragEvent = new object ();
+#if NET_2_0
+               static object RegionChangedEvent = new object ();
+#endif
+               static object ResizeEvent = new object ();
+               static object RightToLeftChangedEvent = new object ();
+               static object SizeChangedEvent = new object ();
+               static object StyleChangedEvent = new object ();
+               static object SystemColorsChangedEvent = new object ();
+               static object TabIndexChangedEvent = new object ();
+               static object TabStopChangedEvent = new object ();
+               static object TextChangedEvent = new object ();
+               static object ValidatedEvent = new object ();
+               static object ValidatingEvent = new object ();
+               static object VisibleChangedEvent = new object ();
+
+#if NET_2_0
+               [Browsable (false)]
+               [EditorBrowsable (EditorBrowsableState.Never)]
+               public event EventHandler AutoSizeChanged {
+                       add { Events.AddHandler (AutoSizeChangedEvent, value);}
+                       remove {Events.RemoveHandler (AutoSizeChangedEvent, value);}
+               }
+#endif
+               public event EventHandler BackColorChanged {
+                       add { Events.AddHandler (BackColorChangedEvent, value); }
+                       remove { Events.RemoveHandler (BackColorChangedEvent, value); }
+               }
+
+               public event EventHandler BackgroundImageChanged {
+                       add { Events.AddHandler (BackgroundImageChangedEvent, value); }
+                       remove { Events.RemoveHandler (BackgroundImageChangedEvent, value); }
+               }
+
+#if NET_2_0    
+               public event EventHandler BackgroundImageLayoutChanged {
+                       add {Events.AddHandler (BackgroundImageLayoutChangedEvent, value);}
+                       remove {Events.RemoveHandler (BackgroundImageLayoutChangedEvent, value);}
+               }
+#endif
+
+               public event EventHandler BindingContextChanged {
+                       add { Events.AddHandler (BindingContextChangedEvent, value); }
+                       remove { Events.RemoveHandler (BindingContextChangedEvent, value); }
+               }
+
+               public event EventHandler CausesValidationChanged {
+                       add { Events.AddHandler (CausesValidationChangedEvent, value); }
+                       remove { Events.RemoveHandler (CausesValidationChangedEvent, value); }
+               }
+
+               public event UICuesEventHandler ChangeUICues {
+                       add { Events.AddHandler (ChangeUICuesEvent, value); }
+                       remove { Events.RemoveHandler (ChangeUICuesEvent, value); }
+               }
+
+               public event EventHandler Click {
+                       add { Events.AddHandler (ClickEvent, value); }
+                       remove { Events.RemoveHandler (ClickEvent, value); }
+               }
+               
+#if NET_2_0
+               public event EventHandler ClientSizeChanged {
+                       add {Events.AddHandler (ClientSizeChangedEvent, value);}
+                       remove {Events.RemoveHandler (ClientSizeChangedEvent, value);}
+               }
+#endif
+
+#if NET_2_0
+               [Browsable (false)]
+#endif
+               public event EventHandler ContextMenuChanged {
+                       add { Events.AddHandler (ContextMenuChangedEvent, value); }
+                       remove { Events.RemoveHandler (ContextMenuChangedEvent, value); }
+               }
+
+#if NET_2_0
+               public event EventHandler ContextMenuStripChanged {
+                       add { Events.AddHandler (ContextMenuStripChangedEvent, value); }
+                       remove { Events.RemoveHandler (ContextMenuStripChangedEvent, value);}
+               }
+#endif
+
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
+#if NET_2_0
+               [Browsable(true)]
+#else 
                [Browsable(false)]
-               public event ControlEventHandler        ControlAdded;
+#endif
+               public event ControlEventHandler ControlAdded {
+                       add { Events.AddHandler (ControlAddedEvent, value); }
+                       remove { Events.RemoveHandler (ControlAddedEvent, value); }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
+#if NET_2_0
+               [Browsable(true)]
+#else 
                [Browsable(false)]
-               public event ControlEventHandler        ControlRemoved;
+#endif
+               public event ControlEventHandler ControlRemoved {
+                       add { Events.AddHandler (ControlRemovedEvent, value); }
+                       remove { Events.RemoveHandler (ControlRemovedEvent, value); }
+               }
 
                [MWFDescription("Fired when the cursor for the control has been changed"), MWFCategory("PropertyChanged")]
-               public event EventHandler               CursorChanged;
-               public event EventHandler               DockChanged;
-               public event EventHandler               DoubleClick;
-               public event DragEventHandler           DragDrop;
-               public event DragEventHandler           DragEnter;
-               public event EventHandler               DragLeave;
-               public event DragEventHandler           DragOver;
-               public event EventHandler               EnabledChanged;
-               public event EventHandler               Enter;
-               public event EventHandler               FontChanged;
-               public event EventHandler               ForeColorChanged;
-               public event GiveFeedbackEventHandler   GiveFeedback;
+               public event EventHandler CursorChanged {
+                       add { Events.AddHandler (CursorChangedEvent, value); }
+                       remove { Events.RemoveHandler (CursorChangedEvent, value); }
+               }
+               public event EventHandler DockChanged {
+                       add { Events.AddHandler (DockChangedEvent, value); }
+                       remove { Events.RemoveHandler (DockChangedEvent, value); }
+               }
+
+               public event EventHandler DoubleClick {
+                       add { Events.AddHandler (DoubleClickEvent, value); }
+                       remove { Events.RemoveHandler (DoubleClickEvent, value); }
+               }
+
+               public event DragEventHandler DragDrop {
+                       add { Events.AddHandler (DragDropEvent, value); }
+                       remove { Events.RemoveHandler (DragDropEvent, value); }
+               }
+
+               public event DragEventHandler DragEnter {
+                       add { Events.AddHandler (DragEnterEvent, value); }
+                       remove { Events.RemoveHandler (DragEnterEvent, value); }
+               }
+
+               public event EventHandler DragLeave {
+                       add { Events.AddHandler (DragLeaveEvent, value); }
+                       remove { Events.RemoveHandler (DragLeaveEvent, value); }
+               }
+
+               public event DragEventHandler DragOver {
+                       add { Events.AddHandler (DragOverEvent, value); }
+                       remove { Events.RemoveHandler (DragOverEvent, value); }
+               }
+
+               public event EventHandler EnabledChanged {
+                       add { Events.AddHandler (EnabledChangedEvent, value); }
+                       remove { Events.RemoveHandler (EnabledChangedEvent, value); }
+               }
+
+               public event EventHandler Enter {
+                       add { Events.AddHandler (EnterEvent, value); }
+                       remove { Events.RemoveHandler (EnterEvent, value); }
+               }
+
+               public event EventHandler FontChanged {
+                       add { Events.AddHandler (FontChangedEvent, value); }
+                       remove { Events.RemoveHandler (FontChangedEvent, value); }
+               }
+
+               public event EventHandler ForeColorChanged {
+                       add { Events.AddHandler (ForeColorChangedEvent, value); }
+                       remove { Events.RemoveHandler (ForeColorChangedEvent, value); }
+               }
+
+               public event GiveFeedbackEventHandler GiveFeedback {
+                       add { Events.AddHandler (GiveFeedbackEvent, value); }
+                       remove { Events.RemoveHandler (GiveFeedbackEvent, value); }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
-               public event EventHandler               GotFocus;
+               public event EventHandler GotFocus {
+                       add { Events.AddHandler (GotFocusEvent, value); }
+                       remove { Events.RemoveHandler (GotFocusEvent, value); }
+               }
+
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
-               public event EventHandler               HandleCreated;
+               public event EventHandler HandleCreated {
+                       add { Events.AddHandler (HandleCreatedEvent, value); }
+                       remove { Events.RemoveHandler (HandleCreatedEvent, value); }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
-               public event EventHandler               HandleDestroyed;
+               public event EventHandler HandleDestroyed {
+                       add { Events.AddHandler (HandleDestroyedEvent, value); }
+                       remove { Events.RemoveHandler (HandleDestroyedEvent, value); }
+               }
 
-               public event HelpEventHandler           HelpRequested;
-               public event EventHandler               ImeModeChanged;
+               public event HelpEventHandler HelpRequested {
+                       add { Events.AddHandler (HelpRequestedEvent, value); }
+                       remove { Events.RemoveHandler (HelpRequestedEvent, value); }
+               }
+
+               public event EventHandler ImeModeChanged {
+                       add { Events.AddHandler (ImeModeChangedEvent, value); }
+                       remove { Events.RemoveHandler (ImeModeChangedEvent, value); }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
-               public event InvalidateEventHandler     Invalidated;
+               public event InvalidateEventHandler Invalidated {
+                       add { Events.AddHandler (InvalidatedEvent, value); }
+                       remove { Events.RemoveHandler (InvalidatedEvent, value); }
+               }
+
+               public event KeyEventHandler KeyDown {
+                       add { Events.AddHandler (KeyDownEvent, value); }
+                       remove { Events.RemoveHandler (KeyDownEvent, value); }
+               }
 
-               public event KeyEventHandler            KeyDown;
-               public event KeyPressEventHandler       KeyPress;
-               public event KeyEventHandler            KeyUp;
-               public event LayoutEventHandler         Layout;
-               public event EventHandler               Leave;
-               public event EventHandler               LocationChanged;
+               public event KeyPressEventHandler KeyPress {
+                       add { Events.AddHandler (KeyPressEvent, value); }
+                       remove { Events.RemoveHandler (KeyPressEvent, value); }
+               }
+
+               public event KeyEventHandler KeyUp {
+                       add { Events.AddHandler (KeyUpEvent, value); }
+                       remove { Events.RemoveHandler (KeyUpEvent, value); }
+               }
+
+               public event LayoutEventHandler Layout {
+                       add { Events.AddHandler (LayoutEvent, value); }
+                       remove { Events.RemoveHandler (LayoutEvent, value); }
+               }
+
+               public event EventHandler Leave {
+                       add { Events.AddHandler (LeaveEvent, value); }
+                       remove { Events.RemoveHandler (LeaveEvent, value); }
+               }
+
+               public event EventHandler LocationChanged {
+                       add { Events.AddHandler (LocationChangedEvent, value); }
+                       remove { Events.RemoveHandler (LocationChangedEvent, value); }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
-               public event EventHandler               LostFocus;
+               public event EventHandler LostFocus {
+                       add { Events.AddHandler (LostFocusEvent, value); }
+                       remove { Events.RemoveHandler (LostFocusEvent, value); }
+               }
+
+#if NET_2_0
+               public event EventHandler MarginChanged {
+                       add { Events.AddHandler (MarginChangedEvent, value); }
+                       remove {Events.RemoveHandler (MarginChangedEvent, value); }
+               }
+               
+               public event EventHandler MouseCaptureChanged {
+                       add { Events.AddHandler (MouseCaptureChangedEvent, value); }
+                       remove { Events.RemoveHandler (MouseCaptureChangedEvent, value); }
+               }
+               
+               public event MouseEventHandler MouseClick
+               {
+                       add { Events.AddHandler (MouseClickEvent, value); }
+                       remove { Events.RemoveHandler (MouseClickEvent, value); }
+               }
+               public event MouseEventHandler MouseDoubleClick
+               {
+                       add { Events.AddHandler (MouseDoubleClickEvent, value); }
+                       remove { Events.RemoveHandler (MouseDoubleClickEvent, value); }
+               }
+#endif
+               public event MouseEventHandler MouseDown {
+                       add { Events.AddHandler (MouseDownEvent, value); }
+                       remove { Events.RemoveHandler (MouseDownEvent, value); }
+               }
 
-               public event MouseEventHandler          MouseDown;
-               public event EventHandler               MouseEnter;
-               public event EventHandler               MouseHover;
-               public event EventHandler               MouseLeave;
-               public event MouseEventHandler          MouseMove;
-               public event MouseEventHandler          MouseUp;
+               public event EventHandler MouseEnter {
+                       add { Events.AddHandler (MouseEnterEvent, value); }
+                       remove { Events.RemoveHandler (MouseEnterEvent, value); }
+               }
+
+               public event EventHandler MouseHover {
+                       add { Events.AddHandler (MouseHoverEvent, value); }
+                       remove { Events.RemoveHandler (MouseHoverEvent, value); }
+               }
+
+               public event EventHandler MouseLeave {
+                       add { Events.AddHandler (MouseLeaveEvent, value); }
+                       remove { Events.RemoveHandler (MouseLeaveEvent, value); }
+               }
+
+               public event MouseEventHandler MouseMove {
+                       add { Events.AddHandler (MouseMoveEvent, value); }
+                       remove { Events.RemoveHandler (MouseMoveEvent, value); }
+               }
+
+               public event MouseEventHandler MouseUp {
+                       add { Events.AddHandler (MouseUpEvent, value); }
+                       remove { Events.RemoveHandler (MouseUpEvent, value); }
+               }
 
                [EditorBrowsable(EditorBrowsableState.Advanced)]
                [Browsable(false)]
-               public event MouseEventHandler          MouseWheel;
-
-               public event EventHandler               Move;
-               public event PaintEventHandler          Paint;
-               public event EventHandler               ParentChanged;
-               public event QueryAccessibilityHelpEventHandler QueryAccessibilityHelp;
-               public event QueryContinueDragEventHandler      QueryContinueDrag;
-               public event EventHandler               Resize;
-               public event EventHandler               RightToLeftChanged;
-               public event EventHandler               SizeChanged;
-               public event EventHandler               StyleChanged;
-               public event EventHandler               SystemColorsChanged;
-               public event EventHandler               TabIndexChanged;
-               public event EventHandler               TabStopChanged;
-               public event EventHandler               TextChanged;
-               public event EventHandler               Validated;
-               public event CancelEventHandler         Validating;
-               public event EventHandler               VisibleChanged;
+               public event MouseEventHandler MouseWheel {
+                       add { Events.AddHandler (MouseWheelEvent, value); }
+                       remove { Events.RemoveHandler (MouseWheelEvent, value); }
+               }
+
+               public event EventHandler Move {
+                       add { Events.AddHandler (MoveEvent, value); }
+                       remove { Events.RemoveHandler (MoveEvent, value); }
+               }
+#if NET_2_0
+               public event EventHandler PaddingChanged
+               {
+                       add { Events.AddHandler (PaddingChangedEvent, value); }
+                       remove { Events.RemoveHandler (PaddingChangedEvent, value); }
+               }
+#endif
+               public event PaintEventHandler Paint {
+                       add { Events.AddHandler (PaintEvent, value); }
+                       remove { Events.RemoveHandler (PaintEvent, value); }
+               }
+
+               public event EventHandler ParentChanged {
+                       add { Events.AddHandler (ParentChangedEvent, value); }
+                       remove { Events.RemoveHandler (ParentChangedEvent, value); }
+               }
+
+#if NET_2_0
+               public event PreviewKeyDownEventHandler PreviewKeyDown {
+                       add { Events.AddHandler (PreviewKeyDownEvent, value); }
+                       remove { Events.RemoveHandler (PreviewKeyDownEvent, value); }
+               }
+#endif
+
+               public event QueryAccessibilityHelpEventHandler QueryAccessibilityHelp {
+                       add { Events.AddHandler (QueryAccessibilityHelpEvent, value); }
+                       remove { Events.RemoveHandler (QueryAccessibilityHelpEvent, value); }
+               }
+
+               public event QueryContinueDragEventHandler QueryContinueDrag {
+                       add { Events.AddHandler (QueryContinueDragEvent, value); }
+                       remove { Events.RemoveHandler (QueryContinueDragEvent, value); }
+               }
+
+#if NET_2_0
+               public event EventHandler RegionChanged {
+                       add { Events.AddHandler (RegionChangedEvent, value); }
+                       remove { Events.RemoveHandler (RegionChangedEvent, value); }
+               }
+#endif
+
+#if NET_2_0    
+               [EditorBrowsable (EditorBrowsableState.Advanced)]
+#endif
+               public event EventHandler Resize {
+                       add { Events.AddHandler (ResizeEvent, value); }
+                       remove { Events.RemoveHandler (ResizeEvent, value); }
+               }
+
+               public event EventHandler RightToLeftChanged {
+                       add { Events.AddHandler (RightToLeftChangedEvent, value); }
+                       remove { Events.RemoveHandler (RightToLeftChangedEvent, value); }
+               }
+
+               public event EventHandler SizeChanged {
+                       add { Events.AddHandler (SizeChangedEvent, value); }
+                       remove { Events.RemoveHandler (SizeChangedEvent, value); }
+               }
+
+               public event EventHandler StyleChanged {
+                       add { Events.AddHandler (StyleChangedEvent, value); }
+                       remove { Events.RemoveHandler (StyleChangedEvent, value); }
+               }
+
+               public event EventHandler SystemColorsChanged {
+                       add { Events.AddHandler (SystemColorsChangedEvent, value); }
+                       remove { Events.RemoveHandler (SystemColorsChangedEvent, value); }
+               }
+
+               public event EventHandler TabIndexChanged {
+                       add { Events.AddHandler (TabIndexChangedEvent, value); }
+                       remove { Events.RemoveHandler (TabIndexChangedEvent, value); }
+               }
+
+               public event EventHandler TabStopChanged {
+                       add { Events.AddHandler (TabStopChangedEvent, value); }
+                       remove { Events.RemoveHandler (TabStopChangedEvent, value); }
+               }
+
+               public event EventHandler TextChanged {
+                       add { Events.AddHandler (TextChangedEvent, value); }
+                       remove { Events.RemoveHandler (TextChangedEvent, value); }
+               }
+
+               public event EventHandler Validated {
+                       add { Events.AddHandler (ValidatedEvent, value); }
+                       remove { Events.RemoveHandler (ValidatedEvent, value); }
+               }
+
+               public event CancelEventHandler Validating {
+                       add { Events.AddHandler (ValidatingEvent, value); }
+                       remove { Events.RemoveHandler (ValidatingEvent, value); }
+               }
+
+               public event EventHandler VisibleChanged {
+                       add { Events.AddHandler (VisibleChangedEvent, value); }
+                       remove { Events.RemoveHandler (VisibleChangedEvent, value); }
+               }
+
                #endregion      // Events
        }
 }