mcs/class/System.Windows.Forms/System.Windows.Forms/win32functions.cs

   1 /*
   2  * Copyright (C) 5/11/2002 Carlos Harvey Perez
   3  * Modifcations and additons, Copyright Ximian 2002/3
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject
  11  * to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be
  14  * included in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  18  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.
  20  * IN NO EVENT SHALL CARLOS HARVEY PEREZ BE LIABLE FOR ANY CLAIM,
  21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
  23  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of Carlos Harvey Perez
  26  * shall not be used in advertising or otherwise to promote the sale,
  27  * use or other dealings in this Software without prior written
  28  * authorization from Carlos Harvey Perez.
  29  */
  30
  31 using System;
  32 using System.Drawing;
  33 using System.Runtime.InteropServices;
  34 using System.Text;
  35 using System.Diagnostics;
  36
  37 //using UtilityLibrary.WinControls;
  38
  39 //namespace UtilityLibrary.Win32
  40 namespace System.Windows.Forms{
  41         /// <summary>
  42         /// Windows API Functions
  43         /// </summary>
  44         public class Win32
  45         {
  46                 #region Constructors
  47                 // No need to construct this object
  48                 #endregion
  49
  50                 #region Constans values
  51                 internal const string TOOLBARCLASSNAME = "ToolbarWindow32";
  52                 internal const string REBARCLASSNAME = "ReBarWindow32";
  53                 internal const string PROGRESSBARCLASSNAME = "msctls_progress32";
  54                 internal const string SCROLLBAR = "SCROLLBAR";
  55                 internal const string TOOLTIPS_CLASS = "tooltips_class32";
  56                 internal const string MDICLIENTCLASSNAME = "MDICLIENT";
  57                 internal const string TABCONTROL = "SysTabControl32";
  58                 internal const string DEFAULT_WINDOW_CLASS = "mono_scrollable_control";
  59
  60                 #endregion
  61
  62                 #region CallBacks
  63                 internal delegate IntPtr FnHookProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam);
  64                 internal delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);
  65                 internal delegate int CompareFunc(IntPtr param1, IntPtr param2, IntPtr sortParam);
  66                 internal delegate int WinProc(IntPtr hWnd, int message, int wParam, int lParam);
  67                 internal delegate int WinProcMsg(IntPtr hWnd, Msg message, int wParam, int lParam);
  68                 #endregion
  69
  70                 #region Kernel32.dll functions
  71                 [DllImport("kernel32.dll", ExactSpelling=true, CharSet=CharSet.Auto)]
  72                 internal static extern int GetCurrentThreadId();
  73                 [DllImport("kernel32.dll")]
  74                 internal static extern int GetDriveType(string rootPathName);
  75                 [DllImport("kernel32.dll")]
  76                 internal static extern int GetVolumeInformation(string drivePath,
  77                         StringBuilder volumeNameBuffer,
  78                         int driveNameBufferSize,
  79                         out int serialNumber,
  80                         out int maxFileNameLength,
  81                         out int fileSystemFlags,
  82                         StringBuilder systemNameBuffer,
  83                         int systemNameBufferSize);
  84
  85                 [DllImport("kernel32.dll")]
  86                 internal static extern IntPtr LoadLibraryA(string filename);
  87
  88                 [DllImport("kernel32.dll")]
  89                 internal static extern bool FreeLibrary(IntPtr handle);
  90
  91                 [DllImport("kernel32.dll", EntryPoint="OutputDebugStringW")]
  92                 internal static extern void OutputDebugString(string message);
  93
  94                 [DllImport ("kernel32.dll", CallingConvention = CallingConvention.StdCall,
  95                          CharSet = CharSet.Auto)]
  96                 internal extern static uint GetLastError ();
  97
  98                 [DllImport ("kernel32.dll", CallingConvention = CallingConvention.StdCall,
  99                          CharSet = CharSet.Auto, EntryPoint = "FormatMessageW")]
 100                 internal extern static uint  FormatMessage (
 101                         uint flags, IntPtr lpSource,uint messageId, uint languageId,
 102                         StringBuilder lpBuffer, int nSize, IntPtr Arguments);
 103
 104                 internal static string FormatMessage(uint error) {
 105                         StringBuilder sb = new StringBuilder(2048);
 106                         Win32.FormatMessage( (uint)(FM_.FORMAT_MESSAGE_FROM_SYSTEM | FM_.FORMAT_MESSAGE_IGNORE_INSERTS),
 107                                 IntPtr.Zero, error, 0, sb, sb.Capacity, IntPtr.Zero);
 108                         return sb.ToString();
 109                 }
 110         #endregion
 111
 112                 #region Gdi32.dll functions
 113                 [DllImport("gdi32.dll")]
 114                 static internal extern bool StretchBlt(IntPtr hDCDest, int XOriginDest, int YOriginDest, int WidthDest, int HeightDest,
 115                         IntPtr hDCSrc,  int XOriginScr, int YOriginSrc, int WidthScr, int HeightScr, PatBltTypes Rop);
 116                 [DllImport("gdi32.dll")]
 117                 static internal extern IntPtr CreateCompatibleDC(IntPtr hDC);
 118                 [DllImport("gdi32.dll")]
 119                 static internal extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int Width, int Heigth);
 120                 [DllImport("gdi32.dll")]
 121                 static internal extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
 122                 [DllImport("gdi32.dll")]
 123                 static internal extern bool BitBlt(IntPtr hDCDest, int XOriginDest, int YOriginDest, int WidthDest, int HeightDest,
 124                         IntPtr hDCSrc,  int XOriginScr, int YOriginSrc, PatBltTypes flags);
 125                 [DllImport("gdi32.dll")]
 126                 static internal extern IntPtr DeleteDC(IntPtr hDC);
 127                 [DllImport("gdi32.dll")]
 128                 static internal extern bool PatBlt(IntPtr hDC, int XLeft, int YLeft, int Width, int Height, int Rop);
 129                 [DllImport("gdi32.dll")]
 130                 static internal extern bool DeleteObject(IntPtr hObject);
 131                 [DllImport("gdi32.dll")]
 132                 static internal extern int GetPixel(IntPtr hDC, int XPos, int YPos);
 133                 [DllImport("gdi32.dll")]
 134                 static internal extern int SetMapMode(IntPtr hDC, int fnMapMode);
 135                 [DllImport("gdi32.dll")]
 136                 static internal extern int GetObjectType(IntPtr handle);
 137                 [DllImport("gdi32.dll")]
 138                 internal static extern IntPtr CreateDIBSection(IntPtr hdc, ref BITMAPINFO_FLAT bmi,
 139                         int iUsage, ref int ppvBits, IntPtr hSection, int dwOffset);
 140                 [DllImport("gdi32.dll")]
 141                 internal static extern int GetDIBits(IntPtr hDC, IntPtr hbm, int StartScan, int ScanLines, int lpBits, BITMAPINFOHEADER bmi, int usage);
 142                 [DllImport("gdi32.dll")]
 143                 internal static extern int GetDIBits(IntPtr hdc, IntPtr hbm, int StartScan, int ScanLines, int lpBits, ref BITMAPINFO_FLAT bmi, int usage);
 144                 [DllImport("gdi32.dll")]
 145                 internal static extern IntPtr GetPaletteEntries(IntPtr hpal, int iStartIndex, int nEntries, byte[] lppe);
 146                 [DllImport("gdi32.dll")]
 147                 internal static extern IntPtr GetSystemPaletteEntries(IntPtr hdc, int iStartIndex, int nEntries, byte[] lppe);
 148                 [DllImport("gdi32.dll")]
 149                 internal static extern int SetDCBrushColor(IntPtr hdc,  int crColor);
 150                 [DllImport("gdi32.dll")]
 151                 internal static extern IntPtr CreateSolidBrush(int crColor);
 152                 [DllImport("gdi32.dll")]
 153                 internal static extern BackgroundMode SetBkMode(IntPtr hDC, BackgroundMode mode);
 154                 [DllImport("gdi32.dll")]
 155                 internal static extern int SetViewportOrgEx(IntPtr hdc,  int x, int y,  int param);
 156                 [DllImport("gdi32.dll")]
 157                 internal static extern int SetTextColor(IntPtr hDC, int colorRef);
 158                 [DllImport("gdi32.dll")]
 159                 internal static extern int SetStretchBltMode(IntPtr hDC, StrechModeFlags StrechMode);
 160                 [DllImport("gdi32.dll")]
 161                 internal static extern int SetPixel(IntPtr hDC, int x, int y, int color);
 162                 [DllImport("gdi32.dll")]
 163                 internal static extern IntPtr CreatePen(PenStyle penStyle, int width, int color);
 164                 [DllImport("gdi32.dll")]
 165                 internal static extern int GetClipRgn(IntPtr hDC, ref IntPtr region);
 166                 [DllImport("gdi32.dll")]
 167                 internal static extern IntPtr CreateRectRgn(int nLeftRect,  int TopRect, int nRightRect, int nBottomRect);
 168                 [DllImport("gdi32.dll")]
 169                 internal static extern int GetRgnBox(IntPtr hRegion, ref RECT rc);
 170                 [DllImport("gdi32.dll")]
 171                 internal static extern IntPtr GetStockObject(GSO_ objectType);
 172                 [DllImport("gdi32.dll",CharSet = CharSet.Ansi,EntryPoint="ExtTextOutA")]
 173                 internal static extern int ExtTextOut(IntPtr hdc, int x, int y,
 174                         ExtTextOutFlags options, ref RECT rc, int str, int strLen, IntPtr distances);
 175                 [DllImport("gdi32.dll",CharSet = CharSet.Ansi,EntryPoint="ExtTextOutA")]
 176                 internal static extern int ExtTextOut(IntPtr hdc, int x, int y,
 177                         ExtTextOutFlags options, ref RECT rc, string str, int strLen, IntPtr distances);
 178                 [DllImport("gdi32.dll",CharSet = CharSet.Ansi,EntryPoint="GetTextExtentPoint32A")]
 179                 internal static extern bool GetTextExtentPoint32(IntPtr hDC, string lpString, int cbString, ref SIZE lpSize);
 180
 181
 182                 [DllImport ("gdi32.dll",
 183                          CallingConvention = CallingConvention.StdCall,
 184                          CharSet = CharSet.Auto)]
 185                 internal static extern uint GetBkColor (IntPtr hdc);
 186
 187                 [DllImport ("gdi32.dll",
 188                          CallingConvention = CallingConvention.StdCall,
 189                          CharSet = CharSet.Auto)]
 190                 internal static extern uint SetBkColor (IntPtr hdc, uint crColor);
 191
 192                 internal static int RGB(Color color)
 193                 {
 194                         return color.R | (color.G << 8) | (color.B << 16);
 195                 }
 196
 197                 #endregion
 198
 199                 #region Uxtheme.dll functions
 200                 [DllImport("uxtheme.dll")]
 201                 static public extern int SetWindowTheme(IntPtr hWnd, StringBuilder AppID, StringBuilder ClassID);
 202                 static public void DisableWindowsXPTheme(IntPtr hWnd)
 203                 {
 204                         // Disable using the Window XP Theme for the Window handle
 205                         // passed as a parameter
 206                         StringBuilder applicationName = new StringBuilder(" ", 1);
 207                         StringBuilder classIDs = new StringBuilder(" " , 1);
 208                         Win32.SetWindowTheme(hWnd, applicationName, classIDs);
 209                 }
 210                 #endregion
 211
 212                 #region user32.dll functions
 213                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 214                 static internal extern IntPtr GetDesktopWindow();
 215                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 216                 static internal extern bool ShowWindow(IntPtr hWnd, ShowWindowStyles State);
 217                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 218                 static internal extern bool SetForegroundWindow(IntPtr hWnd);
 219                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 220                 static internal extern bool OpenClipboard(IntPtr hWndNewOwner);
 221                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 222                 static internal extern bool CloseClipboard();
 223                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 224                 static internal extern bool EmptyClipboard();
 225                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 226                 static internal extern IntPtr SetClipboardData( int Format, IntPtr hData);
 227                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 228                 static internal extern bool GetMenuItemRect(IntPtr hWnd, IntPtr hMenu, int Item, ref RECT rc);
 229                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 230                 internal static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);
 231                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 232                 internal static extern int SendMessage(IntPtr hWnd, Msg msg, int wParam, int lParam);
 233                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 234                 internal static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam);
 235                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 236                 internal static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref RECT lParam);
 237                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 238                 internal static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref POINT lParam);
 239                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 240                 internal static extern int SendMessage(IntPtr hWnd, int msg, int wParam, string lParam);
 241                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 242                 internal static extern int SendMessage(IntPtr hWnd, Msg msg, int wParam, string lParam);
 243                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 244                 internal static extern void SendMessage(IntPtr hWnd, ToolBarMessages msg, int wParam, ref TBBUTTON lParam);
 245                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 246                 internal static extern void SendMessage(IntPtr hWnd, ToolBarMessages msg, int wParam, ref TBBUTTONINFO lParam);
 247                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 248                 internal static extern int SendMessage(IntPtr hWnd, RebarMessages msg, int wParam, ref REBARBANDINFO lParam);
 249                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 250                 internal static extern void SendMessage(IntPtr hWnd, TreeViewMessages msg, int wParam, ref TVITEM lParam);
 251                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 252                 internal static extern void SendMessage(IntPtr hWnd, TreeViewMessages msg, int wParam, ref TVINSERTSTRUCT lParam);
 253                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 254                 internal static extern void SendMessage(IntPtr hWnd, TreeViewMessages msg, int wParam, ref TVSORTCB lParam);
 255                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 256                 internal static extern int SendMessage(IntPtr hWnd, TreeViewMessages msg, int wParam, ref TVHITTESTINFO hti);
 257                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 258                 internal static extern void SendMessage(IntPtr hWnd, ListViewMessages msg, int wParam, ref LVITEM lParam);
 259                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 260                 internal static extern void SendMessage(IntPtr hWnd, HeaderControlMessages msg, int wParam, ref HDITEM lParam);
 261                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 262                 internal static extern void SendMessage(IntPtr hWnd, HeaderControlMessages msg, int wParam, ref HD_HITTESTINFO hti);
 263                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 264                 internal static extern int SendMessage(IntPtr hWnd, HeaderControlMessages msg, int wParam, int lParam);
 265                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="PostMessageA")]
 266                 internal static extern IntPtr PostMessage(IntPtr hWnd, int msg, int wParam, int lParam);
 267                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="PostMessageA")]
 268                 internal static extern IntPtr PostMessage(IntPtr hWnd, Msg msg, int wParam, int lParam);
 269                 [DllImport("user32.dll", CharSet=CharSet.Auto, EntryPoint="SetWindowsHookExW")]
 270                 internal static extern IntPtr SetWindowsHookEx(WindowsHookCodes hookid, HookProc pfnhook, IntPtr hinst, int threadid);
 271                 [DllImport("user32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
 272                 internal static extern bool UnhookWindowsHookEx(IntPtr hhook);
 273                 [DllImport("user32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
 274                 internal static extern IntPtr CallNextHookEx(IntPtr hhook, int code, IntPtr wparam, IntPtr lparam);
 275                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="DrawTextA")]
 276                 internal extern static int DrawText(IntPtr hdc, string lpString, int nCount, ref RECT lpRect, DrawTextFormatFlags flags);
 277                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 278                 internal extern static IntPtr GetDlgItem(IntPtr hDlg, int nControlID);
 279                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 280                 internal extern static int InvalidateRect(IntPtr hWnd,  ref RECT rc, int bErase);
 281                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 282                 internal extern static int InvalidateRect(IntPtr hWnd,  IntPtr rc, int bErase);
 283                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 284                 internal static extern bool WaitMessage();
 285                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 286                 internal static extern int SendMessage2ref(IntPtr hWnd, int msg, ref int wParam, ref int lParam);
 287
 288                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="PeekMessageA")]
 289                 internal static extern bool PeekMessage(ref MESSAGE msg, int hWnd, int wFilterMin, int wFilterMax, PeekMessageFlags flags);
 290
 291                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="GetMessageA")]
 292                 internal static extern bool GetMessage(ref MESSAGE msg, int hWnd, int wFilterMin, int wFilterMax);
 293
 294                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 295                 internal static extern bool TranslateMessage(ref MESSAGE msg);
 296
 297                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="DispatchMessageA")]
 298                 internal static extern bool DispatchMessage(ref MESSAGE msg);
 299
 300                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="LoadCursorA")]
 301                 internal static extern IntPtr LoadCursor(IntPtr hInstance, CursorType cursor);
 302
 303                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 304                 internal static extern IntPtr SetCursor(IntPtr hCursor);
 305
 306                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 307                 internal static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
 308
 309                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 310                 internal static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
 311
 312                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 313                 internal static extern bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref POINT pptDst, ref SIZE psize,
 314                         IntPtr hdcSrc, ref POINT pprSrc, Int32 crKey, ref BLENDFUNCTION pblend, UpdateLayeredWindowFlags dwFlags);
 315
 316                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 317                 internal static extern bool ClientToScreen(IntPtr hWnd, ref POINT pt);
 318
 319                 internal static bool ClientToScreen(IntPtr hWnd, ref RECT rect) {
 320                         POINT pt1 = new POINT();
 321                         pt1.x = rect.left;
 322                         pt1.y = rect.top;
 323                         POINT pt2 = new POINT();
 324                         pt2.x = rect.right;
 325                         pt2.y = rect.bottom;
 326                         bool result = Win32.ClientToScreen(hWnd, ref pt1);
 327                         result &= Win32.ClientToScreen(hWnd, ref pt2);
 328                         rect.left = pt1.x;
 329                         rect.top = pt1.y;
 330                         rect.right = pt2.x;
 331                         rect.bottom = pt2.y;
 332                         return result;
 333                 }
 334
 335
 336                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 337                 internal static extern bool ScreenToClient(IntPtr hWnd, ref POINT pt);
 338
 339                 internal static bool ScreenToClient(IntPtr hWnd, ref RECT rect) {
 340                         POINT pt1 = new POINT();
 341                         pt1.x = rect.left;
 342                         pt1.y = rect.top;
 343                         POINT pt2 = new POINT();
 344                         pt2.x = rect.right;
 345                         pt2.y = rect.bottom;
 346                         bool result = Win32.ScreenToClient(hWnd, ref pt1);
 347                         result &= Win32.ScreenToClient(hWnd, ref pt2);
 348                         rect.left = pt1.x;
 349                         rect.top = pt1.y;
 350                         rect.right = pt2.x;
 351                         rect.bottom = pt2.y;
 352                         return result;
 353                 }
 354
 355                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 356                 internal static extern bool TrackMouseEvent(ref TRACKMOUSEEVENT tme);
 357
 358                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 359                 internal static extern bool SetWindowRgn(IntPtr hWnd, IntPtr hRgn, bool redraw);
 360
 361                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 362                 internal static extern short GetKeyState(int virtKey);
 363
 364                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 365                 internal static extern bool MoveWindow(IntPtr hWnd, int x, int y, int width, int height, bool repaint);
 366
 367                 [DllImport("user32.dll", CharSet=CharSet.Auto, EntryPoint="GetClassNameW")]
 368                 internal static extern int GetClassName(IntPtr hWnd,  StringBuilder ClassName, int nMaxCount);
 369
 370                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="SetWindowLongA")]
 371                 internal static extern int SetWindowLong(IntPtr hWnd, GetWindowLongFlag flag, int dwNewLong);
 372
 373                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="SetWindowLongA")]
 374                 internal static extern IntPtr SetWindowLong(IntPtr hWnd, GetWindowLongFlag flag, WinProc winProc);
 375
 376                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="SetWindowLongA")]
 377                 internal static extern IntPtr SetWindowLong(IntPtr hWnd, GetWindowLongFlag flag, WndProc winProc);
 378
 379                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 380                 internal static extern IntPtr GetDCEx(IntPtr hWnd, IntPtr hRegion, int flags);
 381
 382                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 383                 internal static extern IntPtr GetWindowDC(IntPtr hWnd);
 384
 385                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 386                 internal static extern int FillRect(IntPtr hDC, ref RECT rect, IntPtr hBrush);
 387
 388                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SetWindowTextA")]
 389                 internal static extern int SetWindowText(IntPtr hWnd, string text);
 390
 391                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="GetWindowTextA")]
 392                 internal static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int maxCount);
 393
 394                 [DllImport("user32.dll", CharSet=CharSet.Ansi,EntryPoint="SendMessageA")]
 395                 static internal extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
 396
 397                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 398                 static internal extern IntPtr SetClipboardViewer(IntPtr hWndNewViewer);
 399
 400                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 401                 static internal extern int ChangeClipboardChain(IntPtr hWndRemove, IntPtr hWndNewNext);
 402
 403                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 404                 static internal extern int GetSystemMetrics(SystemMetricsCodes code);
 405
 406                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 407                 static internal extern int SetScrollInfo(IntPtr hwnd,  int bar, ref SCROLLINFO si, int fRedraw);
 408
 409                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 410                 static internal extern int ShowScrollBar(IntPtr hWnd, int bar,  int show);
 411
 412                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 413                 static internal extern int EnableScrollBar(IntPtr hWnd, int flags, int arrows);
 414
 415                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 416                 static internal extern int BringWindowToTop(IntPtr hWnd);
 417
 418                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 419                 static internal extern int GetScrollInfo(IntPtr hwnd, int bar, ref SCROLLINFO si);
 420
 421                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 422                 static internal extern int ScrollWindowEx(IntPtr hWnd, int dx, int dy,
 423                         ref RECT rcScroll, ref RECT rcClip, IntPtr UpdateRegion, ref RECT rcInvalidated, int flags);
 424
 425                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 426                 static internal extern bool IsWindow(IntPtr hWnd);
 427
 428                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 429                 static internal extern int LockWindowUpdate(IntPtr hWnd);
 430
 431                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 432                 static internal extern bool ValidateRect(IntPtr hWnd, ref RECT rcInvalidated);
 433
 434                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 435                 static internal extern bool ValidateRect(IntPtr hWnd, IntPtr rc);
 436
 437                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 438                 static internal extern int GetScrollBarInfo(IntPtr hWnd, SystemObject id, ref SCROLLBARINFO sbi);
 439
 440                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="GetWindowLongA")]
 441                 static internal extern IntPtr GetWindowLong(IntPtr hWnd, GetWindowLongFlag flag);
 442
 443                 [DllImport("user32.dll", CharSet=CharSet.Auto, EntryPoint="SetPropW")]
 444                 static internal extern int SetProp(IntPtr hWnd, IntPtr atom, IntPtr hData);
 445
 446                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="CallWindowProcA")]
 447                 static internal extern int CallWindowProc(IntPtr hOldProc, IntPtr hWnd, int message, int wParam, int lParam);
 448
 449                 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 450                 static internal extern int EndMenu();
 451
 452                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="DefWindowProcA")]
 453                 static internal extern int DefWindowProc(IntPtr hWnd, int message, int wParam, int lParam);
 454
 455                 [DllImport("user32.dll", CharSet=CharSet.Unicode,EntryPoint="DefMDIChildProcA")]
 456                 static internal extern IntPtr DefMDIChildProc(IntPtr hWnd, Msg Msg, IntPtr wParam, IntPtr lParam);
 457
 458                 [DllImport("user32.dll", CharSet=CharSet.Unicode,EntryPoint="DefFrameProcA")]
 459                 static internal extern IntPtr DefFrameProc(IntPtr hWnd, IntPtr hWndMDIClient, Msg Msg, IntPtr wParam, IntPtr lParam);
 460
 461                 [DllImport("user32.dll", CharSet=CharSet.Auto,EntryPoint="LoadCursorA")]
 462                 static internal extern IntPtr LoadCursor(IntPtr hInstance, LC_ standardCursor);
 463
 464                 [DllImport("user32.dll", CharSet=CharSet.Auto, EntryPoint="RegisterWindowMessageA")]
 465                 static internal extern int RegisterWindowMessage( string message_name);
 466
 467                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall,
 468                          CharSet = CharSet.Auto)]
 469                 internal static extern IntPtr GetMenu (IntPtr hWnd);
 470
 471                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall,
 472                          CharSet = CharSet.Auto)]
 473                 internal static extern int SetMenu (IntPtr hWnd, IntPtr hMenu);
 474
 475                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall,
 476                          CharSet = CharSet.Ansi)]
 477                 internal static extern int InsertMenuA(IntPtr hMenu, uint pos, uint uflags, IntPtr NewItem, string item);
 478
 479                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall,
 480                          CharSet = CharSet.Ansi)]
 481                 internal static extern int RemoveMenu(IntPtr hMenu, uint pos, uint uflags);
 482
 483                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall)]
 484                 internal static extern int DrawMenuBar (IntPtr hWnd);
 485
 486                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall)]
 487                 internal static extern int SetMenuDefaultItem(IntPtr hMenu, int uItem, int fByPos );
 488
 489                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 490                 internal extern static int AdjustWindowRect( ref RECT rc, int dwStyle, int bMenu);
 491
 492                 [DllImport ("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 493                 internal extern static int AdjustWindowRectEx( ref RECT rc, int dwStyle, int bMenu, int dwStyleEx);
 494
 495                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 496                 internal static extern int DrawEdge(IntPtr hdc, ref RECT rc, Border3DStyle edge, Border3DSide flags);
 497
 498                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 499                 internal static extern int DrawFrameControl(IntPtr hdc, ref RECT rc, uint uType, uint uState);
 500                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 501                 internal static extern int DrawFocusRect( IntPtr hdc, ref RECT rc);
 502                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 503                 internal static extern IntPtr WindowFromPoint( POINT pt);
 504                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 505                 internal static extern int GetSysColor( GetSysColorIndex color);
 506
 507                 internal delegate void TimerProc(IntPtr hWnd, uint uMsg, uint idEvent, int dwTime);
 508                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 509                 internal static extern uint SetTimer (IntPtr hWnd, uint nIDEvent, uint uElapse, TimerProc lpTimerFunc);
 510                 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
 511                 internal static extern bool KillTimer (IntPtr hWnd, uint nIDEvent);
 512                 #endregion
 513
 514                 #region Shell32.dll functions
 515
 516                 [DllImport("shell32.dll", CharSet=CharSet.Auto)]
 517                 internal static extern IntPtr SHGetFileInfo(string drivePath, int fileAttributes,
 518                         out SHFILEINFO fileInfo, int countBytesFileInfo, ShellFileInfoFlags flags);
 519
 520                 [DllImport("shell32.dll", CharSet=CharSet.Auto)]
 521                 internal static extern IntPtr SHGetFileInfo(IntPtr idl, int fileAttributes,
 522                         out SHFILEINFO fileInfo, int countBytesFileInfo, ShellFileInfoFlags flags);
 523
 524                 [DllImport("shell32.dll", CharSet=CharSet.Auto)]
 525                 internal static extern int SHGetSpecialFolderLocation(IntPtr hwndOwner, ShellSpecialFolder folder, out IntPtr idl);
 526
 527                 [DllImport("shell32.dll", CharSet=CharSet.Auto)]
 528                 internal static extern int SHGetMalloc(out IMalloc alloc);
 529
 530                 [DllImport("shell32.dll", CharSet=CharSet.Auto)]
 531                 internal static extern int SHGetDesktopFolder(out IShellFolder folder);
 532
 533                 [DllImport("shell32.dll", CharSet=CharSet.Auto)]
 534                 internal static extern int SHGetPathFromIDList(IntPtr idl, StringBuilder path);
 535
 536                 internal static void SHFreeMalloc(IntPtr handle)
 537                 {
 538                         IMalloc alloc = null;
 539                         try
 540                         {
 541                                 Win32.SHGetMalloc(out alloc);
 542                                 Debug.Assert(alloc != null);
 543                                 alloc.Free(handle);
 544                                 // Free allocator itself
 545                                 IUnknown iUnknown = (IUnknown)alloc;
 546                                 iUnknown.Release();
 547                         }
 548                         catch (Exception e)
 549                         {
 550                                 // In case the Garbage collector is trying to free
 551                                 // this memory from its own thread
 552                                 Debug.WriteLine(e.Message);
 553                         }
 554                 }
 555
 556                 #endregion
 557
 558                 #region Common Controls functions
 559
 560                 [DllImport("comctl32.dll")]
 561                 internal static extern bool InitCommonControlsEx(INITCOMMONCONTROLSEX icc);
 562
 563                 [DllImport("comctl32.dll")]
 564                 internal static extern bool InitCommonControls();
 565
 566                 [DllImport("comctl32.dll", EntryPoint="DllGetVersion")]
 567                 internal extern static int GetCommonControlDLLVersion(ref DLLVERSIONINFO dvi);
 568
 569                 [DllImport("comctl32.dll")]
 570                 internal static extern IntPtr ImageList_Create(int width, int height, int flags, int count, int grow);
 571
 572                 [DllImport("comctl32.dll")]
 573                 internal static extern bool ImageList_Destroy(IntPtr handle);
 574
 575                 [DllImport("comctl32.dll")]
 576                 internal static extern int ImageList_Add(IntPtr imageHandle, IntPtr hBitmap, IntPtr hMask);
 577
 578                 [DllImport("comctl32.dll")]
 579                 internal static extern bool ImageList_Remove(IntPtr imageHandle, int index);
 580
 581                 [DllImport("comctl32.dll")]
 582                 internal static extern bool ImageList_BeginDrag(IntPtr imageHandle, int imageIndex, int xHotSpot, int yHotSpot);
 583
 584                 [DllImport("comctl32.dll")]
 585                 internal static extern bool ImageList_DragEnter(IntPtr hWndLock, int x, int y);
 586
 587                 [DllImport("comctl32.dll")]
 588                 internal static extern bool ImageList_DragMove(int x, int y);
 589
 590                 [DllImport("comctl32.dll")]
 591                 internal static extern bool ImageList_DragLeave(IntPtr hWndLock);
 592
 593                 [DllImport("comctl32.dll")]
 594                 internal static extern void ImageList_EndDrag();
 595
 596                 [DllImport("comctl32.dll")]
 597                 internal static extern bool ImageList_Draw(IntPtr hImageList, int imageIndex,
 598                         IntPtr hDCDest, int x, int y, ImageListDrawFlags flags);
 599
 600                 [DllImport("comctl32.dll")]
 601                 internal static extern int ImageList_DrawEx(
 602                         IntPtr hImageList, int imageIndex, IntPtr hDCDest, int x, int y, int dx, int dy,
 603                         uint backColor, uint foregColor, ImageListDrawFlags flags);
 604
 605                 [DllImport("comctl32.dll")]
 606                 internal static extern int ImageList_DragShowNolock(int show);
 607
 608                 [DllImport("comctl32.dll")]
 609                 internal static extern int ImageList_AddMasked(IntPtr hImageList, IntPtr hBitmap, int crMask);
 610
 611                 [DllImport("comctl32.dll")]
 612                 internal static extern int ImageList_SetDragCursorImage(IntPtr himlDrag, int iDrag, int dxHotspot, int dyHotspot);
 613
 614                 internal static int ImageList_DrawEx(IntPtr hImageList, int imageIndex, IntPtr hDCDest, int x, int y, int dx, int dy,
 615                         ImageListDrawColor backColor, ImageListDrawColor foreColor, ImageListDrawFlags flags)
 616                 {
 617                         uint bColor = (uint)ImageListDrawColors.CLR_NONE;
 618                         if ( backColor == ImageListDrawColor.Default )
 619                                 bColor =  (uint)ImageListDrawColors.CLR_DEFAULT;
 620
 621                         uint fColor = (uint)ImageListDrawColors.CLR_NONE;
 622                         if ( foreColor == ImageListDrawColor.Default )
 623                                 fColor =  (uint)ImageListDrawColors.CLR_DEFAULT;
 624
 625                         // Call actual function
 626                         return ImageList_DrawEx(hImageList, imageIndex, hDCDest, x, y, dx, dy, bColor, fColor, flags);
 627                 }
 628
 629
 630                 static internal bool IsCommonCtrl6()
 631                 {
 632                         DLLVERSIONINFO dllVersion = new DLLVERSIONINFO();
 633                         // We are assummng here that anything greater or equal than 6
 634                         // will have the new XP theme drawing enable
 635                         dllVersion.cbSize = Marshal.SizeOf(typeof(DLLVERSIONINFO));
 636                         Win32.GetCommonControlDLLVersion(ref dllVersion);
 637                         return (dllVersion.dwMajorVersion >= 6);
 638                 }
 639
 640                 #endregion
 641
 642                 #region Win32 Macro-Like helpers
 643                 internal static int X_LPARAM(int lParam)
 644                 {
 645                         return (lParam & 0xffff);
 646                 }
 647
 648                 internal static int Y_LPARAM(int lParam)
 649                 {
 650                         return (lParam >> 16);
 651                 }
 652
 653                 internal static Point GetPointFromLPARAM(int lParam)
 654                 {
 655                         return new Point(X_LPARAM(lParam), Y_LPARAM(lParam));
 656                 }
 657
 658                 internal static int LOW_ORDER(int param)
 659                 {
 660                         return (ushort)param /*(param & 0xffff)*/;
 661                 }
 662
 663                 internal static int HIGH_ORDER(int param)
 664                 {
 665                         return (param >> 16);
 666                 }
 667
 668                 internal static int INDEXTOOVERLAYMASK(int index)
 669                 {
 670                         return (int)((uint)index << 8);
 671                 }
 672
 673                 internal static int OVERLAYMASKTOINDEX(int index)
 674                 {
 675                         return (int)((uint)index >> 8);
 676                 }
 677
 678                 internal static int INDEXTOSTATEIMAGEMASK(int i)
 679                 {
 680                         return (int)((uint)i << 12);
 681                 }
 682
 683                 internal static int STATEIMAGEMASKTOINDEX(int i)
 684                 {
 685                         return (int)((uint)i >> 12);
 686                 }
 687
 688                 internal static short HRESULT_CODE(int hr)
 689                 {
 690                         return (short)(hr & 0xFFFF);
 691                 }
 692
 693                 internal static bool SUCCEEDED(int status)
 694                 {
 695                         return (status >= 0);
 696                 }
 697
 698                 internal static bool FAILED(int status)
 699                 {
 700                         return (status < 0);
 701                 }
 702
 703                 internal static int  MAKEINTRESOURCE(int res)
 704                 {
 705                         return 0x0000FFFF & res;
 706                 }
 707
 708                 internal static int MAKELONG(int lo, int hi)
 709                 {
 710                         return (hi << 16) | (lo & 0x0000ffff);
 711                 }
 712                 #endregion
 713
 714                 #region Mono win32 Fuinctions
 715
 716                 internal delegate IntPtr WndProc (IntPtr hwnd, Msg msg, IntPtr wParam, IntPtr lParam);
 717
 718
 719                 [DllImport ("user32.dll",
 720                          CallingConvention = CallingConvention.StdCall,
 721                          CharSet = CharSet.Ansi, EntryPoint = "RegisterClassA")]
 722                 internal static extern uint RegisterClass(ref WNDCLASS wndClass);
 723
 724                 #region Added by Dennis hayes 10-20-2002
 725                 //correct?
 726                 [DllImport ("user32.dll",
 727                          CallingConvention = CallingConvention.StdCall,
 728                          CharSet = CharSet.Auto,EntryPoint="SendMessageA")]
 729                 internal static extern uint SendMessage(
 730                         IntPtr hWnd, uint Msg,
 731                         IntPtr wParam, IntPtr lParam);
 732
 733                 [DllImport ("user32.dll",
 734                          CallingConvention = CallingConvention.StdCall,
 735                          CharSet = CharSet.Auto)]
 736                 internal static extern bool GetWindowPlacement(
 737                         IntPtr hWnd,
 738                         ref  WINDOWPLACEMENT  lpwndpl  // position data
 739                         );
 740                 #endregion
 741
 742                 [DllImport ("user32.dll",
 743                          CallingConvention = CallingConvention.StdCall,
 744                          CharSet = CharSet.Ansi, EntryPoint = "CreateWindowExA")]
 745                 internal static extern IntPtr CreateWindowEx (
 746                         uint dwExStyle, string lpClassName,
 747                         string lpWindowName, uint dwStyle,
 748                         int x, int y, int nWidth, int nHeight,
 749                         IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance,
 750                         [ MarshalAs( UnmanagedType.AsAny )]
 751                         object lpParam);
 752
 753                 [DllImport ("user32.dll",
 754                          CallingConvention = CallingConvention.StdCall,
 755                          CharSet = CharSet.Auto)]
 756                 internal static extern IntPtr CreateMenu ();
 757
 758                 [DllImport ("user32.dll",
 759                          CallingConvention = CallingConvention.StdCall,
 760                          CharSet = CharSet.Ansi)]
 761                 internal static extern bool AppendMenuA(IntPtr hMenu, uint uflags, IntPtr NewItem, string item);
 762
 763                 [DllImport ("user32.dll",
 764                          CallingConvention = CallingConvention.StdCall)]
 765                 internal static extern bool DestroyMenu (IntPtr hMenu);
 766
 767                 [DllImport ("user32.dll", CallingConvention =
 768                          CallingConvention.StdCall, CharSet = CharSet.Auto)]
 769                 internal extern static IntPtr DefWindowProcA (
 770                         IntPtr hWnd, Msg Msg, IntPtr wParam, IntPtr lParam);
 771
 772                 [DllImport ("user32.dll", CallingConvention =
 773                          CallingConvention.StdCall, CharSet = CharSet.Auto)]
 774                 internal extern static int DestroyWindow (IntPtr hWnd);
 775
 776                 [DllImport ("user32.dll", CallingConvention =
 777                          CallingConvention.StdCall, CharSet = CharSet.Auto)]
 778                 internal static extern int ShowWindow (IntPtr hWnd,
 779                         uint nCmdShow);
 780
 781                 [DllImport ("user32.dll", CallingConvention =
 782                          CallingConvention.StdCall,CharSet = CharSet.Auto)]
 783                 internal static extern int GetMessageA (ref MSG msg, int hwnd,
 784                         int msgFrom,  int msgTo);
 785
 786                 [DllImport ("user32.dll", CallingConvention =
 787                          CallingConvention.StdCall, CharSet = CharSet.Auto)]
 788                 internal static extern int  TranslateMessage (ref MSG msg);
 789
 790                 [DllImport ("user32.dll", CallingConvention =
 791                          CallingConvention.StdCall, CharSet = CharSet.Auto)]
 792                 internal static extern int DispatchMessageA (ref MSG msg);
 793
 794                 [DllImport ("user32.dll", CallingConvention =
 795                          CallingConvention.StdCall, CharSet = CharSet.Auto)]
 796                 internal static extern int PeekMessageA (
 797                         ref MSG msg, IntPtr hWnd, uint wMsgFilterMin,
 798                         uint wMsgFilterMax, uint wRemoveMsg);
 799
 800                 [DllImport ("user32.dll", CallingConvention =
 801                          CallingConvention.StdCall,
 802                          CharSet = CharSet.Auto)]
 803                 internal extern static void PostQuitMessage (int nExitCode);
 804
 805                 [DllImport ("user32.dll", CallingConvention =
 806                          CallingConvention.StdCall,
 807                          CharSet = CharSet.Auto)]
 808                 internal extern static IntPtr SetActiveWindow (IntPtr hWnd);
 809
 810                 [DllImport ("user32.dll", CallingConvention =
 811                          CallingConvention.StdCall,
 812                          CharSet = CharSet.Auto)]
 813                 internal extern static int CloseWindow (IntPtr hWnd);
 814
 815                 [DllImport ("user32.dll", CallingConvention =
 816                          CallingConvention.StdCall,
 817                          CharSet = CharSet.Auto)]
 818                 internal extern static int SetWindowPos (
 819                         IntPtr hWnd, SetWindowPosZOrder pos,
 820                         int X, int Y, int cx, int cy, SetWindowPosFlags uFlags);
 821
 822                 [DllImport ("user32.dll",
 823                          CallingConvention = CallingConvention.StdCall,
 824                          CharSet = CharSet.Ansi)]
 825                 internal static extern int MessageBoxA (
 826                         IntPtr hWnd, string pText, string pCaption, uint uType);
 827
 828                 [DllImport ("user32.dll",
 829                          CallingConvention = CallingConvention.StdCall,
 830                          CharSet = CharSet.Auto)]
 831                 internal static extern IntPtr SetParent (
 832                         IntPtr hWndChild, IntPtr hWndNewParent);
 833
 834                 [DllImport ("user32.dll",
 835                          CallingConvention = CallingConvention.StdCall,
 836                          CharSet = CharSet.Auto)]
 837                 internal static extern IntPtr GetParent (IntPtr hWnd);
 838
 839                 [DllImport ("user32.dll",
 840                          CallingConvention = CallingConvention.StdCall,
 841                          CharSet = CharSet.Auto)]
 842                 internal static extern IntPtr GetWindow (IntPtr hWnd, uint uCmd);
 843
 844                 [DllImport ("user32.dll",
 845                          CallingConvention = CallingConvention.StdCall,
 846                          CharSet = CharSet.Ansi)]
 847                 internal static extern bool SetWindowTextA (
 848                         IntPtr hWnd, string lpString);
 849
 850                 [DllImport ("user32.dll",
 851                          CallingConvention = CallingConvention.StdCall,
 852                          CharSet = CharSet.Auto)]
 853                 internal static extern bool UpdateWindow (IntPtr hWnd);
 854
 855                 [DllImport ("user32.dll",
 856                          CallingConvention = CallingConvention.StdCall,
 857                          CharSet = CharSet.Auto)]
 858                 internal static extern IntPtr GetDC (IntPtr hWnd);
 859
 860                 [DllImport ("user32.dll",
 861                          CallingConvention = CallingConvention.StdCall,
 862                          CharSet = CharSet.Auto)]
 863                 internal static extern int ReleaseDC (IntPtr hWnd, IntPtr hDC);
 864
 865                 [DllImport ("user32.dll",
 866                          CallingConvention = CallingConvention.StdCall,
 867                          CharSet = CharSet.Auto)]
 868                 internal static extern IntPtr GetFocus();
 869
 870                 [DllImport ("user32.dll",
 871                          CallingConvention = CallingConvention.StdCall,
 872                          CharSet = CharSet.Auto)]
 873                 internal static extern IntPtr SetFocus (IntPtr hWnd);
 874
 875                 [DllImport ("user32.dll",
 876                          CallingConvention = CallingConvention.StdCall,
 877                          CharSet = CharSet.Auto)]
 878                 internal static extern bool IsWindowEnabled (IntPtr hWnd);
 879
 880                 [DllImport ("user32.dll",
 881                          CallingConvention = CallingConvention.StdCall,
 882                          CharSet = CharSet.Auto)]
 883                 internal static extern bool IsMenu (IntPtr hWnd);
 884
 885
 886                 [DllImport ("user32.dll",
 887                          CallingConvention = CallingConvention.StdCall,
 888                          CharSet = CharSet.Auto)]
 889                 internal static extern bool EnableWindow (
 890                         IntPtr hWnd, bool bEnable);
 891
 892                 [DllImport ("user32.dll",
 893                          CallingConvention = CallingConvention.StdCall,
 894                          CharSet = CharSet.Auto)]
 895                 internal static extern bool IsDialogMessage (
 896                         IntPtr hWnd, ref MSG mes);
 897
 898                 [DllImport ("user32.dll",
 899                          CallingConvention = CallingConvention.StdCall,
 900                          CharSet = CharSet.Auto)]
 901                 internal static extern bool GetWindowRect (
 902                         IntPtr hWnd, ref RECT lpRect);
 903
 904                 [DllImport ("user32.dll",
 905                          CallingConvention = CallingConvention.StdCall,
 906                          CharSet = CharSet.Auto)]
 907                 internal static extern bool GetClientRect (
 908                         IntPtr hWnd, ref RECT lpRect);
 909
 910                 [DllImport ("user32.dll",
 911                          CallingConvention = CallingConvention.StdCall,
 912                          CharSet = CharSet.Auto)]
 913                 internal static extern bool InvalidateRect (
 914                         IntPtr hWnd, ref RECT lpRect, bool bErase);
 915
 916                 [DllImport ("user32.dll",
 917                          CallingConvention = CallingConvention.StdCall,
 918                          CharSet = CharSet.Auto)]
 919                 internal static extern IntPtr GetCapture ();
 920
 921                 [DllImport ("user32.dll",
 922                          CallingConvention = CallingConvention.StdCall,
 923                          CharSet = CharSet.Auto)]
 924                 internal static extern IntPtr SetCapture (IntPtr hWnd);
 925
 926                 [DllImport ("user32.dll",
 927                          CallingConvention = CallingConvention.StdCall,
 928                          CharSet = CharSet.Auto)]
 929                 internal static extern bool ReleaseCapture ();
 930
 931                 [DllImport ("user32.dll",
 932                          CallingConvention = CallingConvention.StdCall,
 933                          CharSet = CharSet.Auto)]
 934                 internal static extern int GetWindowTextA (
 935                         IntPtr hWnd, StringBuilder lpString, int nMaxCount);
 936
 937                 [DllImport ("user32.dll",
 938                          CallingConvention = CallingConvention.StdCall,
 939                          CharSet = CharSet.Auto)]
 940                 internal static extern int GetWindowTextLengthA (IntPtr hWnd);
 941
 942                 [DllImport ("user32.dll",
 943                          CallingConvention = CallingConvention.StdCall,
 944                          CharSet = CharSet.Auto)]
 945                 internal static extern bool GetCursorPos (ref POINT lpPoint);
 946
 947                 [DllImport ("Comdlg32.dll",
 948                          CallingConvention = CallingConvention.StdCall,
 949                          CharSet = CharSet.Ansi)]
 950                 internal static extern bool GetOpenFileName ( ref OPENFILENAME lpofn );
 951
 952                 [DllImport ("Comdlg32.dll",
 953                          CallingConvention = CallingConvention.StdCall,
 954                          CharSet = CharSet.Ansi)]
 955                 internal static extern uint CommDlgExtendedError ( );
 956
 957                 #endregion
 958
 959                 internal static void UpdateWindowStyle( IntPtr hwnd, int RemoveStyle, int AddStyle) {
 960                         if( Win32.IsWindow(hwnd)) {
 961                                 int style = Win32.GetWindowLong(hwnd, GetWindowLongFlag.GWL_STYLE).ToInt32();
 962                                 style &= ~RemoveStyle;
 963                                 style |= AddStyle;
 964                                 Win32.SetWindowLong(hwnd, GetWindowLongFlag.GWL_STYLE, style);
 965                                 Win32.SetWindowPos(hwnd, 0, 0, 0, 0, 0, SetWindowPosFlags.SWP_NOMOVE |
 966                                         SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOSIZE |
 967                                         SetWindowPosFlags.SWP_NOACTIVATE | SetWindowPosFlags.SWP_FRAMECHANGED);
 968                         }
 969                 }
 970
 971                 internal static ButtonStyles ContentAlignment2SystemButtonStyle( ContentAlignment contentAlign) {
 972                         ButtonStyles sysButtonStyle = 0;
 973
 974                         if( contentAlign == ContentAlignment.BottomCenter ||
 975                                 contentAlign == ContentAlignment.BottomLeft ||
 976                                 contentAlign == ContentAlignment.BottomRight) {
 977                                 sysButtonStyle |= ButtonStyles.BS_BOTTOM;
 978                         }
 979                         else if(contentAlign == ContentAlignment.TopCenter ||
 980                                 contentAlign == ContentAlignment.TopLeft ||
 981                                 contentAlign == ContentAlignment.TopRight) {
 982                                 sysButtonStyle |= ButtonStyles.BS_TOP;
 983                         }
 984                         else {
 985                                 sysButtonStyle |= ButtonStyles.BS_VCENTER;
 986                         }
 987
 988                         if( contentAlign == ContentAlignment.BottomLeft ||
 989                                 contentAlign == ContentAlignment.MiddleLeft ||
 990                                 contentAlign == ContentAlignment.TopLeft) {
 991                                 sysButtonStyle |= ButtonStyles.BS_LEFT;
 992                         }
 993                         else if(contentAlign == ContentAlignment.BottomRight ||
 994                                 contentAlign == ContentAlignment.MiddleRight ||
 995                                 contentAlign == ContentAlignment.TopRight) {
 996                                 sysButtonStyle |= ButtonStyles.BS_RIGHT;
 997                         }
 998                         else {
 999                                 sysButtonStyle |= ButtonStyles.BS_CENTER;
1000                         }
1001                         return sysButtonStyle;
1002                 }
1003
1004                 internal static StringFormat ContentAlignment2StringFormat( ContentAlignment contentAlign) {
1005                         StringAlignment alignment = 0;
1006                         StringAlignment lineAlignment = 0;
1007
1008                         if( contentAlign == ContentAlignment.BottomCenter ||
1009                                 contentAlign == ContentAlignment.BottomLeft ||
1010                                 contentAlign == ContentAlignment.BottomRight) {
1011                                 lineAlignment = StringAlignment.Far;
1012                         }
1013                         else if(contentAlign == ContentAlignment.TopCenter ||
1014                                 contentAlign == ContentAlignment.TopLeft ||
1015                                 contentAlign == ContentAlignment.TopRight) {
1016                                 lineAlignment = StringAlignment.Near;
1017                         }
1018                         else {
1019                                 lineAlignment = StringAlignment.Center;
1020                         }
1021
1022                         if( contentAlign == ContentAlignment.BottomLeft ||
1023                                 contentAlign == ContentAlignment.MiddleLeft ||
1024                                 contentAlign == ContentAlignment.TopLeft) {
1025                                 alignment = StringAlignment.Near;
1026                         }
1027                         else if(contentAlign == ContentAlignment.BottomRight ||
1028                                 contentAlign == ContentAlignment.MiddleRight ||
1029                                 contentAlign == ContentAlignment.TopRight) {
1030                                 alignment = StringAlignment.Far;
1031                         }
1032                         else {
1033                                 alignment = StringAlignment.Center;
1034                         }
1035                         StringFormat result = new StringFormat();
1036                         result.Alignment = alignment;
1037                         result.LineAlignment = lineAlignment;
1038                         return result;
1039                 }
1040
1041                 internal static DrawTextFormatFlags ContentAlignment2DrawTextFormat( ContentAlignment contentAlign) {
1042                         DrawTextFormatFlags format = 0;
1043
1044                         if( contentAlign == ContentAlignment.BottomCenter ||
1045                                 contentAlign == ContentAlignment.BottomLeft ||
1046                                 contentAlign == ContentAlignment.BottomRight) {
1047                                 format |= DrawTextFormatFlags.DT_BOTTOM;
1048                         }
1049                         else if(contentAlign == ContentAlignment.TopCenter ||
1050                                 contentAlign == ContentAlignment.TopLeft ||
1051                                 contentAlign == ContentAlignment.TopRight) {
1052                                 format |= DrawTextFormatFlags.DT_TOP;
1053                         }
1054                         else {
1055                                 format |= DrawTextFormatFlags.DT_VCENTER;
1056                         }
1057
1058                         if( contentAlign == ContentAlignment.BottomLeft ||
1059                                 contentAlign == ContentAlignment.MiddleLeft ||
1060                                 contentAlign == ContentAlignment.TopLeft) {
1061                                 format |= DrawTextFormatFlags.DT_LEFT;
1062                         }
1063                         else if(contentAlign == ContentAlignment.BottomRight ||
1064                                 contentAlign == ContentAlignment.MiddleRight ||
1065                                 contentAlign == ContentAlignment.TopRight) {
1066                                 format |= DrawTextFormatFlags.DT_RIGHT;
1067                         }
1068                         else {
1069                                 format |= DrawTextFormatFlags.DT_CENTER;
1070                         }
1071                         return format;
1072                 }
1073
1074                 internal static void DrawText(Graphics paintOn, string text, Font font, Color color, Rectangle rect, ContentAlignment alignment) {
1075
1076                         RECT rc = new RECT();
1077                         rc.left = rect.Left;
1078                         rc.top = rect.Top;
1079                         rc.right = rect.Right;
1080                         rc.bottom = rect.Bottom;
1081
1082                         IntPtr hdc = paintOn.GetHdc();
1083                         int prevColor = Win32.SetTextColor(hdc, RGB(color));
1084                         IntPtr prevFont = Win32.SelectObject(hdc, font.ToHfont());
1085                         BackgroundMode prevBkMode = Win32.SetBkMode(hdc, BackgroundMode.TRANSPARENT);
1086                         Win32.DrawText(hdc, text, text.Length, ref rc,
1087                                DrawTextFormatFlags.DT_SINGLELINE | Win32.ContentAlignment2DrawTextFormat(alignment));
1088                         Win32.SetBkMode(hdc, prevBkMode);
1089                         Win32.SelectObject(hdc, prevFont);
1090                         Win32.SetTextColor(hdc, prevColor);
1091                         paintOn.ReleaseHdc(hdc);
1092                 }
1093
1094                 internal static SIZE GetTextExtent ( IntPtr hWnd, string text ) {
1095                         IntPtr hOldFont = new IntPtr ( 0 );
1096                         IntPtr hFont = new IntPtr ( Win32.SendMessage ( hWnd, (int)Msg.WM_GETFONT, 0, 0 ) );
1097                         IntPtr hDC   = Win32.GetWindowDC ( hWnd );
1098                         if ( hFont != IntPtr.Zero )
1099                                 hOldFont = Win32.SelectObject ( hDC, hFont );
1100                         SIZE size = new SIZE();
1101                         Win32.GetTextExtentPoint32 ( hDC, text, text.Length, ref size);
1102                         if ( hOldFont != IntPtr.Zero )
1103                                 Win32.SelectObject ( hDC, hOldFont );
1104                         Win32.ReleaseDC ( hWnd, hDC );
1105                         return size;
1106                 }
1107         }
1108 }