New tests.
[mono.git] / mcs / class / corlib / System.Runtime.InteropServices / Marshal.cs
index 82fa7f5866ee1be7ea5cfa0aa193e18345e991a2..fa0344c771e185b9b0bf8ce078f780851b8e666d 100644 (file)
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-using Mono.Interop;
+using System.Collections;
 using System.Runtime.CompilerServices;
 using System;
 using System.Security;
 using System.Reflection;
 using System.Threading;
 
-#if NET_2_0
 using System.Runtime.ConstrainedExecution;
+#if !MOONLIGHT
 using System.Runtime.InteropServices.ComTypes;
 #endif
 
+#if !MOONLIGHT
+using Mono.Interop;
+#endif
+
 namespace System.Runtime.InteropServices
 {
        [SuppressUnmanagedCodeSecurity ()]
-       public
-#if NET_2_0
-       static
-#else
-       sealed
-#endif
-       class Marshal
+       public static class Marshal
        {
                /* fields */
                public static readonly int SystemMaxDBCSCharSize = 2; // don't know what this is
@@ -62,104 +60,138 @@ namespace System.Runtime.InteropServices
                        SystemDefaultCharSize = Environment.OSVersion.Platform == PlatformID.Win32NT ? 2 : 1;
                }
 
-#if !NET_2_0
-               private Marshal () {}
-#endif
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static int AddRefInternal (IntPtr pUnk);
 
-        [MethodImplAttribute (MethodImplOptions.InternalCall)]
-        public extern static int AddRef (IntPtr pUnk);
+               public static int AddRef (IntPtr pUnk)
+               {
+                       if (pUnk == IntPtr.Zero)
+                               throw new ArgumentException ("Value cannot be null.", "pUnk");
+                       return AddRefInternal (pUnk);
+               }
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr AllocCoTaskMem (int cb);
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
-#endif
                public extern static IntPtr AllocHGlobal (IntPtr cb);
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
-#endif
-               public static IntPtr AllocHGlobal (int cb) {
+               public static IntPtr AllocHGlobal (int cb)
+               {
                        return AllocHGlobal ((IntPtr)cb);
                }
 
                [MonoTODO]
-               public static object BindToMoniker (string monikerName) {
+               public static object BindToMoniker (string monikerName)
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static void ChangeWrapperHandleStrength (object otp, bool fIsWeak) {
+               public static void ChangeWrapperHandleStrength (object otp, bool fIsWeak)
+               {
                        throw new NotImplementedException ();
                }
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
-               extern static void copy_to_unmanaged (Array source, int startIndex,
-                                                     IntPtr destination, int length);
+               internal extern static void copy_to_unmanaged (Array source, int startIndex,
+                                                              IntPtr destination, int length);
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
-               extern static void copy_from_unmanaged (IntPtr source, int startIndex,
-                                                       Array destination, int length);
+               internal extern static void copy_from_unmanaged (IntPtr source, int startIndex,
+                                                                Array destination, int length);
+
+               public static void Copy (byte[] source, int startIndex, IntPtr destination, int length)
+               {
+                       copy_to_unmanaged (source, startIndex, destination, length);
+               }
 
-               public static void Copy (byte[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (char[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (char[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (short[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (short[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (int[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (int[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (long[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (long[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (float[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (float[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (double[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (double[] source, int startIndex, IntPtr destination, int length) {
+               public static void Copy (IntPtr[] source, int startIndex, IntPtr destination, int length)
+               {
                        copy_to_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, byte[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, byte[] destination, int startIndex, int length)
+               {
+                       copy_from_unmanaged (source, startIndex, destination, length);
+               }
+
+               public static void Copy (IntPtr source, char[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, char[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, short[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, short[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, int[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, int[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, long[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, long[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, float[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, float[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, double[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static void Copy (IntPtr source, double[] destination, int startIndex, int length) {
+               public static void Copy (IntPtr source, IntPtr[] destination, int startIndex, int length)
+               {
                        copy_from_unmanaged (source, startIndex, destination, length);
                }
 
-               public static object CreateWrapperOfType (object o, Type t) {
+               public static IntPtr CreateAggregatedObject (IntPtr pOuter,
+                                                            object o)
+               {
+                       throw new NotImplementedException ();
+               }
+
+#if !MOONLIGHT
+               public static object CreateWrapperOfType (object o, Type t)
+               {
                        __ComObject co = o as __ComObject;
                        if (co == null)
                                throw new ArgumentException ("o must derive from __ComObject", "o");
@@ -174,98 +206,118 @@ namespace System.Runtime.InteropServices
 
                        return ComInteropProxy.GetProxy (co.IUnknown, t).GetTransparentProxy ();
                }
+#endif
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
+               [ComVisible (true)]
                public extern static void DestroyStructure (IntPtr ptr, Type structuretype);
 
-        [MethodImplAttribute(MethodImplOptions.InternalCall)]
-        public extern static void FreeBSTR (IntPtr ptr);
+               [MethodImplAttribute(MethodImplOptions.InternalCall)]
+               public extern static void FreeBSTR (IntPtr ptr);
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static void FreeCoTaskMem (IntPtr ptr);
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                public extern static void FreeHGlobal (IntPtr hglobal);
 
-#if NET_2_0
-               [MonoTODO]
-               public static void ZeroFreeBSTR (IntPtr ptr)
+               static void ClearBSTR (IntPtr ptr)
                {
-                       throw new NotImplementedException ();
+                       int len = ReadInt32 (ptr, -4);
+
+                       for (int i = 0; i < len; i++)
+                               WriteByte (ptr, i, 0);
+               }
+               
+               public static void ZeroFreeBSTR (IntPtr s)
+               {
+                       ClearBSTR (s);
+                       FreeBSTR (s);
                }
 
-               [MonoTODO]
-               public static void ZeroFreeCoTaskMemAnsi (IntPtr ptr)
+               static void ClearAnsi (IntPtr ptr)
                {
-                       throw new NotImplementedException ();
+                       for (int i = 0; ReadByte (ptr, i) != 0; i++)
+                               WriteByte (ptr, i, 0);
                }
 
-               [MonoTODO]
-               public static void ZeroFreeCoTaskMemUnicode (IntPtr ptr)
+               static void ClearUnicode (IntPtr ptr)
                {
-                       throw new NotImplementedException ();
+                       for (int i = 0; ReadInt16 (ptr, i) != 0; i += 2)
+                               WriteInt16 (ptr, i, 0);
+               }
+               
+               public static void ZeroFreeCoTaskMemAnsi (IntPtr s)
+               {
+                       ClearAnsi (s);
+                       FreeCoTaskMem (s);
                }
 
-               [MonoTODO]
-               public static void ZeroFreeGlobalAllocAnsi (IntPtr hglobal)
+               public static void ZeroFreeCoTaskMemUnicode (IntPtr s)
                {
-                       throw new NotImplementedException ();
+                       ClearUnicode (s);
+                       FreeCoTaskMem (s);
                }
 
-               [MonoTODO]
-               public static void ZeroFreeGlobalAllocUnicode (IntPtr hglobal)
+               public static void ZeroFreeGlobalAllocAnsi (IntPtr s)
                {
-                       throw new NotImplementedException ();
+                       ClearAnsi (s);
+                       FreeHGlobal (s);
                }
-#endif
 
-               [MonoTODO]
-               public static Guid GenerateGuidForType (Type type) {
-                       throw new NotImplementedException ();
+               public static void ZeroFreeGlobalAllocUnicode (IntPtr s)
+               {
+                       ClearUnicode (s);
+                       FreeHGlobal (s);
+               }
+
+#if !MOONLIGHT
+               public static Guid GenerateGuidForType (Type type)
+               {
+                       return type.GUID;
                }
 
                [MonoTODO]
-               public static string GenerateProgIdForType (Type type) {
+               public static string GenerateProgIdForType (Type type)
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static object GetActiveObject (string progID) {
+               public static object GetActiveObject (string progID)
+               {
                        throw new NotImplementedException ();
                }
 
-               [MonoTODO]
-               public static IntPtr GetComInterfaceForObject (object o, Type T) {
-            __ComObject co = o as __ComObject;
-            if (co == null)
-                           throw new NotSupportedException ("Only RCWs are currently supported");
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static IntPtr GetCCW (object o, Type T);
 
-                       IntPtr pUnk = co.GetInterface (T);
-                       AddRef (pUnk);
-                       return pUnk;
+               private static IntPtr GetComInterfaceForObjectInternal (object o, Type T)
+               {
+                       if (IsComObject (o))
+                               return ((__ComObject)o).GetInterface (T);
+                       else
+                               return GetCCW (o, T);
+               }
+
+               public static IntPtr GetComInterfaceForObject (object o, Type T)
+               {
+                       IntPtr pItf = GetComInterfaceForObjectInternal (o, T);
+                       AddRef (pItf);
+                       return pItf;
                }
 
-#if NET_2_0
                [MonoTODO]
-               public static IntPtr GetComInterfaceForObjectInContext (object o, Type t) {
+               public static IntPtr GetComInterfaceForObjectInContext (object o, Type t)
+               {
                        throw new NotImplementedException ();
                }
-#endif
-
-               public static object GetComObjectData (object obj, object key) {
-                       if (obj == null)
-                               throw new ArgumentNullException ("obj");
-                       if (key == null)
-                               throw new ArgumentNullException ("key");
-
-                       __ComObject com_object = obj as __ComObject;
-                       if (com_object == null)
-                               throw new ArgumentException ("obj is not a COM object", "obj");
 
-                       return com_object.Hashtable[key];
+               [MonoNotSupportedAttribute ("MSDN states user code should never need to call this method.")]
+               public static object GetComObjectData (object obj, object key)
+               {
+                       throw new NotSupportedException ("MSDN states user code should never need to call this method.");
                }
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
@@ -274,204 +326,229 @@ namespace System.Runtime.InteropServices
                public static int GetComSlotForMethodInfo (MemberInfo m)
                {
                        if (m == null)
-                               throw new ArgumentNullException("m", "Value cannot be null.");
+                               throw new ArgumentNullException ("m");
                        if (!(m is MethodInfo))
-                               throw new ArgumentException("m", "The MemberInfo must be an interface method.");
+                               throw new ArgumentException ("The MemberInfo must be an interface method.", "m");
                        if (!m.DeclaringType.IsInterface)
-                               throw new ArgumentException("m", "The MemberInfo must be an interface method.");
+                               throw new ArgumentException ("The MemberInfo must be an interface method.", "m");
                        return GetComSlotForMethodInfoInternal (m);
                }
 
                [MonoTODO]
-               public static int GetEndComSlot (Type t) {
+               public static int GetEndComSlot (Type t)
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static int GetExceptionCode() {
+               public static int GetExceptionCode()
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static IntPtr GetExceptionPointers() {
+               [ComVisible (true)]
+               public static IntPtr GetExceptionPointers()
+               {
                        throw new NotImplementedException ();
                }
 
-               [MonoTODO]
-               public static IntPtr GetHINSTANCE (Module m) {
-                       throw new NotImplementedException ();
+               public static IntPtr GetHINSTANCE (Module m)
+               {
+                       if (m == null)
+                               throw new ArgumentNullException ("m");
+
+                       return m.GetHINSTANCE ();
                }
+#endif // !NET_2_1
 
                [MonoTODO ("SetErrorInfo")]
-               public static int GetHRForException (Exception e) {
+               public static int GetHRForException (Exception e)
+               {
                        return e.hresult;
                }
 
                [MonoTODO]
-               public static int GetHRForLastWin32Error() {
+               [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
+               public static int GetHRForLastWin32Error()
+               {
                        throw new NotImplementedException ();
                }
+#if !MOONLIGHT
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static IntPtr GetIDispatchForObjectInternal (object o);
 
-               [MonoTODO]
                public static IntPtr GetIDispatchForObject (object o)
-               {                       // only handle case of RCW objects for now
-                       __ComObject co = o as __ComObject;
-                       if (co != null) {
-                               IntPtr pUnk = co.IDispatch;
-                               AddRef (pUnk);
-                               return pUnk;
-                       }
-                       throw new NotImplementedException ();
+               {
+                       IntPtr pUnk = GetIDispatchForObjectInternal (o);
+                       // Internal method does not AddRef
+                       AddRef (pUnk);
+                       return pUnk;
                }
 
-#if NET_2_0
                [MonoTODO]
-               public static IntPtr GetIDispatchForObjectInContext (object o) {
+               public static IntPtr GetIDispatchForObjectInContext (object o)
+               {
                        throw new NotImplementedException ();
                }
-#endif
 
                [MonoTODO]
-               public static IntPtr GetITypeInfoForType (Type t) {
+               public static IntPtr GetITypeInfoForType (Type t)
+               {
                        throw new NotImplementedException ();
                }
 
-               [MonoTODO]
-               public static IntPtr GetIUnknownForObject (object o) {
-                       // only handle case of RCW objects for now
-                       __ComObject co = o as __ComObject;
-                       if (co != null) {
-                               IntPtr pUnk = co.IUnknown;
-                               AddRef (pUnk);
-                               return pUnk;
-                       }
-                       throw new NotImplementedException ();
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static IntPtr GetIUnknownForObjectInternal (object o);
+
+               public static IntPtr GetIUnknownForObject (object o)
+               {
+                       IntPtr pUnk = GetIUnknownForObjectInternal (o);
+                       // Internal method does not AddRef
+                       AddRef (pUnk);
+                       return pUnk;
                }
 
-#if NET_2_0
                [MonoTODO]
-               public static IntPtr GetIUnknownForObjectInContext (object o) {
+               public static IntPtr GetIUnknownForObjectInContext (object o)
+               {
                        throw new NotImplementedException ();
                }
-#endif
-
-               [MethodImplAttribute(MethodImplOptions.InternalCall)]
-#if NET_2_0
-               [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
-               public static extern int GetLastWin32Error();
 
                [MonoTODO]
-               public static IntPtr GetManagedThunkForUnmanagedMethodPtr (IntPtr pfnMethodToWrap, IntPtr pbSignature, int cbSignature) {
+               [Obsolete ("This method has been deprecated")]
+               public static IntPtr GetManagedThunkForUnmanagedMethodPtr (IntPtr pfnMethodToWrap, IntPtr pbSignature, int cbSignature)
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static MemberInfo GetMethodInfoForComSlot (Type t, int slot, ref ComMemberType memberType) {
+               public static MemberInfo GetMethodInfoForComSlot (Type t, int slot, ref ComMemberType memberType)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static void GetNativeVariantForObject (object obj, IntPtr pDstNativeVariant) {
+               public static void GetNativeVariantForObject (object obj, IntPtr pDstNativeVariant)
+               {
                        Variant vt = new Variant();
                        vt.SetValue(obj);
                        Marshal.StructureToPtr(vt, pDstNativeVariant, false);
                }
 
-               public static object GetObjectForIUnknown (IntPtr pUnk) {
-                       ComInteropProxy proxy = ComInteropProxy.GetProxy (pUnk, typeof(__ComObject));
-            return proxy.GetTransparentProxy ();
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private static extern object GetObjectForCCW (IntPtr pUnk);
+
+               public static object GetObjectForIUnknown (IntPtr pUnk)
+               {
+                       object obj = GetObjectForCCW (pUnk);
+                       // was not a CCW
+                       if (obj == null) {
+                               ComInteropProxy proxy = ComInteropProxy.GetProxy (pUnk, typeof (__ComObject));
+                               obj = proxy.GetTransparentProxy ();
+                       }
+                       return obj;
                }
 
-               public static object GetObjectForNativeVariant (IntPtr pSrcNativeVariant) {
+               public static object GetObjectForNativeVariant (IntPtr pSrcNativeVariant)
+               {
                        Variant vt = (Variant)Marshal.PtrToStructure(pSrcNativeVariant, typeof(Variant));
                        return vt.GetValue();
                }
 
-               [MonoTODO]
-               public static object[] GetObjectsForNativeVariants (IntPtr aSrcNativeVariant, int cVars) {
-                       throw new NotImplementedException ();
+               public static object[] GetObjectsForNativeVariants (IntPtr aSrcNativeVariant, int cVars)
+               {
+                       if (cVars < 0)
+                               throw new ArgumentOutOfRangeException ("cVars", "cVars cannot be a negative number.");
+                       object[] objects = new object[cVars];
+                       for (int i = 0; i < cVars; i++)
+                               objects[i] = GetObjectForNativeVariant ((IntPtr)(aSrcNativeVariant.ToInt64 () +
+                                       i * SizeOf (typeof(Variant))));
+                       return objects;
                }
 
                [MonoTODO]
-               public static int GetStartComSlot (Type t) {
+               public static int GetStartComSlot (Type t)
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static Thread GetThreadFromFiberCookie (int cookie) {
+               [Obsolete ("This method has been deprecated")]
+               public static Thread GetThreadFromFiberCookie (int cookie)
+               {
                        throw new NotImplementedException ();
                }
 
-        public static object GetTypedObjectForIUnknown (IntPtr pUnk, Type t)
-        {
+               public static object GetTypedObjectForIUnknown (IntPtr pUnk, Type t)
+               {
                        ComInteropProxy proxy = new ComInteropProxy (pUnk, t);
-            __ComObject co = (__ComObject)proxy.GetTransparentProxy ();
-            foreach (Type itf in t.GetInterfaces ()) {
-                if ((itf.Attributes & TypeAttributes.Import) == TypeAttributes.Import) {
-                    if (co.GetInterface (itf) == IntPtr.Zero)
-                        return null;
-                }
-            }
-            return co;
-        }
+                       __ComObject co = (__ComObject)proxy.GetTransparentProxy ();
+                       foreach (Type itf in t.GetInterfaces ()) {
+                               if ((itf.Attributes & TypeAttributes.Import) == TypeAttributes.Import) {
+                                       if (co.GetInterface (itf) == IntPtr.Zero)
+                                               return null;
+                               }
+                       }
+                       return co;
+               }
 
                [MonoTODO]
-               public static Type GetTypeForITypeInfo (IntPtr piTypeInfo) {
+               public static Type GetTypeForITypeInfo (IntPtr piTypeInfo)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [Obsolete]
-#endif
                [MonoTODO]
-               public static string GetTypeInfoName (UCOMITypeInfo pTI) {
+               public static string GetTypeInfoName (UCOMITypeInfo pTI)
+               {
+                       throw new NotImplementedException ();
+               }
+
+               public static string GetTypeInfoName (ITypeInfo typeInfo)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [Obsolete]
-#endif
                [MonoTODO]
-               public static Guid GetTypeLibGuid (UCOMITypeLib pTLB) {
+               public static Guid GetTypeLibGuid (UCOMITypeLib pTLB)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [MonoTODO]
-               public static Guid GetTypeLibGuid (ITypeLib typelib) {
+               public static Guid GetTypeLibGuid (ITypeLib typelib)
+               {
                        throw new NotImplementedException ();
                }
-#endif
 
                [MonoTODO]
-               public static Guid GetTypeLibGuidForAssembly (Assembly asm) {
+               public static Guid GetTypeLibGuidForAssembly (Assembly asm)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [Obsolete]
-#endif
                [MonoTODO]
-               public static int GetTypeLibLcid (UCOMITypeLib pTLB) {
+               public static int GetTypeLibLcid (UCOMITypeLib pTLB)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [MonoTODO]
-               public static int GetTypeLibLcid (ITypeLib typelib) {
+               public static int GetTypeLibLcid (ITypeLib typelib)
+               {
                        throw new NotImplementedException ();
                }
-#endif
 
-#if NET_2_0
                [Obsolete]
-#endif
                [MonoTODO]
-               public static string GetTypeLibName (UCOMITypeLib pTLB) {
+               public static string GetTypeLibName (UCOMITypeLib pTLB)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [MonoTODO]
                public static string GetTypeLibName (ITypeLib typelib)
                {
@@ -479,31 +556,42 @@ namespace System.Runtime.InteropServices
                }
 
                [MonoTODO]
-               public static void GetTypeLibVersionForAssembly (Assembly inputAssembly, out int majorVersion, out int minorVersion) {
+               public static void GetTypeLibVersionForAssembly (Assembly inputAssembly, out int majorVersion, out int minorVersion)
+               {
                        throw new NotImplementedException ();
                }
-#endif
 
-               [MonoTODO]
-               public static IntPtr GetUnmanagedThunkForManagedMethodPtr (IntPtr pfnMethodToWrap, IntPtr pbSignature, int cbSignature) {
+               public static object GetUniqueObjectForIUnknown (IntPtr unknown)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static bool IsComObject (object o) {
-                       Type t = o.GetType ();
-                       object[] attrs = t.GetCustomAttributes (typeof (ComImportAttribute), true);
-                       return (attrs != null && attrs.Length > 0);
+               [MonoTODO]
+               [Obsolete ("This method has been deprecated")]
+               public static IntPtr GetUnmanagedThunkForManagedMethodPtr (IntPtr pfnMethodToWrap, IntPtr pbSignature, int cbSignature)
+               {
+                       throw new NotImplementedException ();
                }
 
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               public extern static bool IsComObject (object o);
+
                [MonoTODO]
-               public static bool IsTypeVisibleFromCom (Type t) {
+               public static bool IsTypeVisibleFromCom (Type t)
+               {
                        throw new NotImplementedException ();
                }
 
                [MonoTODO]
-               public static int NumParamBytes (MethodInfo m) {
+               public static int NumParamBytes (MethodInfo m)
+               {
                        throw new NotImplementedException ();
                }
+#endif // !NET_2_1
+
+               [MethodImplAttribute(MethodImplOptions.InternalCall)]
+               [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+               public static extern int GetLastWin32Error();
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr OffsetOf (Type t, string fieldName);
@@ -542,15 +630,25 @@ namespace System.Runtime.InteropServices
                public extern static string PtrToStringBSTR (IntPtr ptr);
                
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
+               [ComVisible (true)]
                public extern static void PtrToStructure (IntPtr ptr, object structure);
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
+               [ComVisible (true)]
                public extern static object PtrToStructure (IntPtr ptr, Type structureType);
 
-        [MethodImplAttribute (MethodImplOptions.InternalCall)]
-        public extern static int QueryInterface (IntPtr pUnk, ref Guid iid, out IntPtr ppv);
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static int QueryInterfaceInternal (IntPtr pUnk, ref Guid iid, out IntPtr ppv);
+
+               public static int QueryInterface (IntPtr pUnk, ref Guid iid, out IntPtr ppv)
+               {
+                       if (pUnk == IntPtr.Zero)
+                               throw new ArgumentException ("Value cannot be null.", "pUnk");
+                       return QueryInterfaceInternal (pUnk, ref iid, out ppv);
+               }
 
-               public static byte ReadByte (IntPtr ptr) {
+               public static byte ReadByte (IntPtr ptr)
+               {
                        return ReadByte (ptr, 0);
                }
 
@@ -558,11 +656,13 @@ namespace System.Runtime.InteropServices
                public extern static byte ReadByte (IntPtr ptr, int ofs);
 
                [MonoTODO]
-               public static byte ReadByte ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs) {
+               public static byte ReadByte ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static short ReadInt16 (IntPtr ptr) {
+               public static short ReadInt16 (IntPtr ptr)
+               {
                        return ReadInt16 (ptr, 0);
                }
 
@@ -570,119 +670,110 @@ namespace System.Runtime.InteropServices
                public extern static short ReadInt16 (IntPtr ptr, int ofs);
 
                [MonoTODO]
-               public static short ReadInt16 ([In, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs) {
+               public static short ReadInt16 ([In, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
-               public static int ReadInt32 (IntPtr ptr) {
+               public static int ReadInt32 (IntPtr ptr)
+               {
                        return ReadInt32 (ptr, 0);
                }
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static int ReadInt32 (IntPtr ptr, int ofs);
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                [MonoTODO]
-               public static int ReadInt32 ([In, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs) {
+               public static int ReadInt32 ([In, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
-               public static long ReadInt64 (IntPtr ptr) {
+               public static long ReadInt64 (IntPtr ptr)
+               {
                        return ReadInt64 (ptr, 0);
                }
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static long ReadInt64 (IntPtr ptr, int ofs);
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                [MonoTODO]
-               public static long ReadInt64 ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs) {
+               public static long ReadInt64 ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs)
+               {
                        throw new NotImplementedException ();
                }
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
-               public static IntPtr ReadIntPtr (IntPtr ptr) {
+               public static IntPtr ReadIntPtr (IntPtr ptr)
+               {
                        return ReadIntPtr (ptr, 0);
                }
                
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr ReadIntPtr (IntPtr ptr, int ofs);
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
                [MonoTODO]
-               public static IntPtr ReadIntPtr ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs) {
+               public static IntPtr ReadIntPtr ([In, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs)
+               {
                        throw new NotImplementedException ();
                }
 
-               [MonoTODO]
-               public static IntPtr ReAllocCoTaskMem (IntPtr pv, int cb) {
-                       throw new NotImplementedException ();
-               }
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               public extern static IntPtr ReAllocCoTaskMem (IntPtr pv, int cb);
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr ReAllocHGlobal (IntPtr pv, IntPtr cb);
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
-        [MethodImplAttribute (MethodImplOptions.InternalCall)]
-        public extern static int Release (IntPtr pUnk);
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static int ReleaseInternal (IntPtr pUnk);
+
+               [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
+               public static int Release (IntPtr pUnk)
+               {
+                       if (pUnk == IntPtr.Zero)
+                               throw new ArgumentException ("Value cannot be null.", "pUnk");
+                       return ReleaseInternal (pUnk);
+               }
 
-               public static int ReleaseComObject (object o) {
+#if !MOONLIGHT
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               private extern static int ReleaseComObjectInternal (object co);
+
+               public static int ReleaseComObject (object o)
+               {
                        if (o == null)
-                               throw new ArgumentException ("o");
-                       __ComObject co = o as __ComObject;
-                       if (co == null)
-                               throw new ArgumentException ("o");
-                       return ComInteropProxy.ReleaseComObject (co);
+                               throw new ArgumentException ("Value cannot be null.", "o");
+                       if (!IsComObject (o))
+                               throw new ArgumentException ("Value must be a Com object.", "o");
+                       return ReleaseComObjectInternal (o);
                }
 
-#if NET_2_0
                [Obsolete]
-#endif
                [MonoTODO]
-               public static void ReleaseThreadCache() {
+               public static void ReleaseThreadCache()
+               {
                        throw new NotImplementedException ();
                }
 
-               public static bool SetComObjectData (object obj, object key, object data) {
-                       if (obj == null)
-                               throw new ArgumentNullException ("obj");
-                       if (key == null)
-                               throw new ArgumentNullException ("key");
-
-                       __ComObject com_object = obj as __ComObject;
-                       if (com_object == null)
-                               throw new ArgumentException ("obj is not a COM object", "obj");
-
-                       com_object.Hashtable[key] = data;
-                       return true;
+               [MonoNotSupportedAttribute ("MSDN states user code should never need to call this method.")]
+               public static bool SetComObjectData (object obj, object key, object data)
+               {
+                       throw new NotSupportedException ("MSDN states user code should never need to call this method.");
                }
+#endif // !NET_2_1
 
-               public static int SizeOf (object structure) {
+               [ComVisible (true)]
+               public static int SizeOf (object structure)
+               {
                        return SizeOf (structure.GetType ());
                }
 
@@ -692,7 +783,13 @@ namespace System.Runtime.InteropServices
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr StringToBSTR (string s);
 
-               public static IntPtr StringToCoTaskMemAnsi (string s) {
+               //
+               // I believe this is wrong, because in Mono and in P/Invoke
+               // we treat "Ansi" conversions as UTF-8 conversions, while
+               // this one does not do this
+               //
+               public static IntPtr StringToCoTaskMemAnsi (string s)
+               {
                        int length = s.Length + 1;
                        IntPtr ctm = AllocCoTaskMem (length);
 
@@ -705,15 +802,17 @@ namespace System.Runtime.InteropServices
                        return ctm;
                }
 
-               [MonoTODO]
-               public static IntPtr StringToCoTaskMemAuto (string s) {
-                       throw new NotImplementedException ();
+               public static IntPtr StringToCoTaskMemAuto (string s)
+               {
+                       return SystemDefaultCharSize == 2
+                               ? StringToCoTaskMemUni (s) : StringToCoTaskMemAnsi (s);
                }
 
-               public static IntPtr StringToCoTaskMemUni (string s) {
+               public static IntPtr StringToCoTaskMemUni (string s)
+               {
                        int length = s.Length + 1;
                        IntPtr ctm = AllocCoTaskMem (length * 2);
-
+                       
                        char[] asChars = new char[length];
                        s.CopyTo (0, asChars, 0, s.Length);
                        asChars[s.Length] = '\0';
@@ -734,68 +833,118 @@ namespace System.Runtime.InteropServices
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr StringToHGlobalUni (string s);
 
-#if NET_2_0
-               [MonoTODO]
+#if !MOONLIGHT
                public static IntPtr SecureStringToBSTR (SecureString s)
                {
                        if (s == null)
                                throw new ArgumentNullException ("s");
-                       throw new NotSupportedException ();
+                       int len = s.Length;
+                       IntPtr ctm = AllocCoTaskMem ((len+1) * 2 + 4);
+                       byte [] buffer = null;
+                       WriteInt32 (ctm, 0, len*2);
+                       try {
+                               buffer = s.GetBuffer ();
+
+                               for (int i = 0; i < len; i++)
+                                       WriteInt16 (ctm, 4 + (i * 2), (short) ((buffer [(i*2)] << 8) | (buffer [i*2+1])));
+                               WriteInt16 (ctm, 4 + buffer.Length, 0);
+                       } finally {
+                               if (buffer != null)
+                                       for (int i = buffer.Length; i > 0; ){
+                                               i--;
+                                               buffer [i] = 0;
+                                       }
+                       }
+                       return (IntPtr) ((long)ctm + 4);
                }
 
-               [MonoTODO]
                public static IntPtr SecureStringToCoTaskMemAnsi (SecureString s)
                {
                        if (s == null)
                                throw new ArgumentNullException ("s");
-                       throw new NotSupportedException ();
+                       int len = s.Length;
+                       IntPtr ctm = AllocCoTaskMem (len + 1);
+                       byte [] copy = new byte [len+1];
+
+                       try {
+                               byte [] buffer = s.GetBuffer ();
+                               int i = 0, j = 0;
+                               for (; i < len; i++, j += 2){
+                                       copy [i] = buffer [j+1];
+                                       buffer [j] = 0;
+                                       buffer [j+1] = 0;
+                               }
+                               copy [i] = 0;
+                               copy_to_unmanaged (copy, 0, ctm, len+1);
+                       } finally {
+                               // Ensure that we clear the buffer.
+                               for (int i = len; i > 0; ){
+                                       i--;
+                                       copy [i] = 0;
+                               }
+                       }
+                       return ctm;
                }
 
-               [MonoTODO]
                public static IntPtr SecureStringToCoTaskMemUnicode (SecureString s)
                {
                        if (s == null)
                                throw new ArgumentNullException ("s");
-                       throw new NotSupportedException ();
+                       int len = s.Length;
+                       IntPtr ctm = AllocCoTaskMem (len * 2 + 2);
+                       byte [] buffer = null;
+                       try {
+                               buffer = s.GetBuffer ();
+                               for (int i = 0; i < len; i++)
+                                       WriteInt16 (ctm, i * 2, (short) ((buffer [(i*2)] << 8) | (buffer [i*2+1])));
+                               WriteInt16 (ctm, buffer.Length, 0);
+                       } finally {
+                               if (buffer != null)
+                                       for (int i = buffer.Length; i > 0; ){
+                                               i--;
+                                               buffer [i] = 0;
+                                       }
+                       }
+                       return ctm;
                }
 
-               [MonoTODO]
                public static IntPtr SecureStringToGlobalAllocAnsi (SecureString s)
                {
                        if (s == null)
                                throw new ArgumentNullException ("s");
-                       throw new NotSupportedException ();
+                       return SecureStringToCoTaskMemAnsi (s);
                }
 
-               [MonoTODO]
                public static IntPtr SecureStringToGlobalAllocUnicode (SecureString s)
                {
                        if (s == null)
                                throw new ArgumentNullException ("s");
-                       throw new NotSupportedException ();
+                       return SecureStringToCoTaskMemUnicode (s);
                }
 #endif
 
-#if NET_2_0
                [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
-#endif
+               [ComVisible (true)]
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static void StructureToPtr (object structure, IntPtr ptr, bool fDeleteOld);
 
                public static void ThrowExceptionForHR (int errorCode) {
-            if (errorCode < 0)
-                           throw new COMException ("", errorCode);
+                       Exception ex = GetExceptionForHR (errorCode);
+                       if (ex != null)
+                               throw ex;
                }
 
-               [MonoTODO]
                public static void ThrowExceptionForHR (int errorCode, IntPtr errorInfo) {
-                       throw new NotImplementedException ();
+                       Exception ex = GetExceptionForHR (errorCode, errorInfo);
+                       if (ex != null)
+                               throw ex;
                }
 
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                public extern static IntPtr UnsafeAddrOfPinnedArrayElement (Array arr, int index);
 
-               public static void WriteByte (IntPtr ptr, byte val) {
+               public static void WriteByte (IntPtr ptr, byte val)
+               {
                        WriteByte (ptr, 0, val);
                }
 
@@ -803,11 +952,13 @@ namespace System.Runtime.InteropServices
                public extern static void WriteByte (IntPtr ptr, int ofs, byte val);
 
                [MonoTODO]
-               public static void WriteByte ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, byte val) {
+               public static void WriteByte ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, byte val)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static void WriteInt16 (IntPtr ptr, short val) {
+               public static void WriteInt16 (IntPtr ptr, short val)
+               {
                        WriteInt16 (ptr, 0, val);
                }
 
@@ -815,11 +966,13 @@ namespace System.Runtime.InteropServices
                public extern static void WriteInt16 (IntPtr ptr, int ofs, short val);
 
                [MonoTODO]
-               public static void WriteInt16 ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, short val) {
+               public static void WriteInt16 ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, short val)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static void WriteInt16 (IntPtr ptr, char val) {
+               public static void WriteInt16 (IntPtr ptr, char val)
+               {
                        WriteInt16 (ptr, 0, val);
                }
 
@@ -828,11 +981,13 @@ namespace System.Runtime.InteropServices
                public extern static void WriteInt16 (IntPtr ptr, int ofs, char val);
 
                [MonoTODO]
-               public static void WriteInt16([In, Out] object ptr, int ofs, char val) {
+               public static void WriteInt16([In, Out] object ptr, int ofs, char val)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static void WriteInt32 (IntPtr ptr, int val) {
+               public static void WriteInt32 (IntPtr ptr, int val)
+               {
                        WriteInt32 (ptr, 0, val);
                }
 
@@ -840,11 +995,13 @@ namespace System.Runtime.InteropServices
                public extern static void WriteInt32 (IntPtr ptr, int ofs, int val);
 
                [MonoTODO]
-               public static void WriteInt32([In, Out, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs, int val) {
+               public static void WriteInt32([In, Out, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs, int val)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static void WriteInt64 (IntPtr ptr, long val) {
+               public static void WriteInt64 (IntPtr ptr, long val)
+               {
                        WriteInt64 (ptr, 0, val);
                }
 
@@ -852,11 +1009,13 @@ namespace System.Runtime.InteropServices
                public extern static void WriteInt64 (IntPtr ptr, int ofs, long val);
 
                [MonoTODO]
-               public static void WriteInt64 ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, long val) {
+               public static void WriteInt64 ([In, Out, MarshalAs (UnmanagedType.AsAny)] object ptr, int ofs, long val)
+               {
                        throw new NotImplementedException ();
                }
 
-               public static void WriteIntPtr (IntPtr ptr, IntPtr val) {
+               public static void WriteIntPtr (IntPtr ptr, IntPtr val)
+               {
                        WriteIntPtr (ptr, 0, val);
                }
 
@@ -864,30 +1023,47 @@ namespace System.Runtime.InteropServices
                public extern static void WriteIntPtr (IntPtr ptr, int ofs, IntPtr val);
 
                [MonoTODO]
-               public static void WriteIntPtr([In, Out, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs, IntPtr val) {
-                       throw new NotImplementedException ();
-               }
-
-#if NET_2_0
-               [MonoTODO]
-               public static int FinalReleaseComObject (object o) {
+               public static void WriteIntPtr([In, Out, MarshalAs(UnmanagedType.AsAny)] object ptr, int ofs, IntPtr val)
+               {
                        throw new NotImplementedException ();
                }
 
-               [MonoTODO]
                public static Exception GetExceptionForHR (int errorCode) {
-                       throw new NotImplementedException ();
+                       return GetExceptionForHR (errorCode, IntPtr.Zero);
                }
 
-               [MonoTODO]
                public static Exception GetExceptionForHR (int errorCode, IntPtr errorInfo) {
-                       throw new NotImplementedException ();
+
+                       const int E_OUTOFMEMORY = unchecked ((int)0x8007000EL);
+                       const int E_INVALIDARG = unchecked ((int)0X80070057);
+                       
+                       switch (errorCode)
+                       {
+                       case E_OUTOFMEMORY:
+                               return new OutOfMemoryException ();
+                       case E_INVALIDARG:
+                               return new ArgumentException ();
+                       }
+                       if (errorCode < 0)
+                               return new COMException ("", errorCode);
+                       return null;
                }
 
+#if !MOONLIGHT
+               public static int FinalReleaseComObject (object o)
+               {
+                       while (ReleaseComObject (o) != 0);
+                       return 0;
+               }
+#endif
+
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                private static extern Delegate GetDelegateForFunctionPointerInternal (IntPtr ptr, Type t);
 
-               public static Delegate GetDelegateForFunctionPointer (IntPtr ptr, Type t) {
+               public static Delegate GetDelegateForFunctionPointer (IntPtr ptr, Type t)
+               {
+                       if (t == null)
+                               throw new ArgumentNullException ("t");
                        if (!t.IsSubclassOf (typeof (MulticastDelegate)) || (t == typeof (MulticastDelegate)))
                                throw new ArgumentException ("Type is not a delegate", "t");
                        if (ptr == IntPtr.Zero)
@@ -899,12 +1075,12 @@ namespace System.Runtime.InteropServices
                [MethodImplAttribute(MethodImplOptions.InternalCall)]
                private static extern IntPtr GetFunctionPointerForDelegateInternal (Delegate d);
                
-               public static IntPtr GetFunctionPointerForDelegate (Delegate d) {
+               public static IntPtr GetFunctionPointerForDelegate (Delegate d)
+               {
                        if (d == null)
                                throw new ArgumentNullException ("d");
                        
                        return GetFunctionPointerForDelegateInternal (d);
                }
-#endif
        }
 }