121 lines
3.6 KiB
C#
121 lines
3.6 KiB
C#
//
|
|
// System.Runtime.InteropServices.CustomMarshalers.EnumeratorToEnumVariantMarshaler
|
|
//
|
|
// Authors:
|
|
// Martin Willemoes Hansen (mwh@sysrq.dk)
|
|
// Jonathan Chambers (joncham@gmail.com)
|
|
//
|
|
// (C) 2003 Martin Willemoes Hansen
|
|
// (C) 2007 Jonathan Chambers
|
|
//
|
|
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
using System;
|
|
using System.Collections;
|
|
using System.Runtime.CompilerServices;
|
|
using System.Runtime.InteropServices;
|
|
|
|
namespace System.Runtime.InteropServices.CustomMarshalers
|
|
{
|
|
public class EnumeratorToEnumVariantMarshaler : ICustomMarshaler
|
|
{
|
|
static EnumeratorToEnumVariantMarshaler instance;
|
|
public void CleanUpManagedData (object pManagedObj) {
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
public void CleanUpNativeData (IntPtr pNativeData) {
|
|
Marshal.Release (pNativeData);
|
|
}
|
|
|
|
public static ICustomMarshaler GetInstance (string pstrCookie) {
|
|
if (instance == null)
|
|
instance = new EnumeratorToEnumVariantMarshaler ();
|
|
return instance;
|
|
}
|
|
|
|
public int GetNativeDataSize () {
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
public IntPtr MarshalManagedToNative (object pManagedObj) {
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
public object MarshalNativeToManaged (IntPtr pNativeData) {
|
|
IEnumVARIANT ienumvariant = (IEnumVARIANT)Marshal.GetObjectForIUnknown (pNativeData);
|
|
VARIANTEnumerator e = new VARIANTEnumerator (ienumvariant);
|
|
return e;
|
|
}
|
|
|
|
[ComImport]
|
|
[Guid ("00020404-0000-0000-C000-000000000046")]
|
|
[InterfaceType (ComInterfaceType.InterfaceIsIUnknown)]
|
|
interface IEnumVARIANT
|
|
{
|
|
[MethodImpl (MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
|
|
void Next (int celt, [MarshalAs (UnmanagedType.Struct)]out object rgvar, out uint pceltFetched);
|
|
[MethodImpl (MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
|
|
void Skip (uint celt);
|
|
[MethodImpl (MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
|
|
void Reset ();
|
|
[return: MarshalAs (UnmanagedType.Interface)]
|
|
[MethodImpl (MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
|
|
IEnumVARIANT Clone ();
|
|
|
|
}
|
|
|
|
class VARIANTEnumerator : IEnumerator
|
|
{
|
|
IEnumVARIANT com_enum;
|
|
object current;
|
|
public VARIANTEnumerator (IEnumVARIANT com_enum) {
|
|
this.com_enum = com_enum;
|
|
}
|
|
#region IEnumerator Members
|
|
|
|
public object Current {
|
|
get {
|
|
return current;
|
|
}
|
|
}
|
|
|
|
public bool MoveNext () {
|
|
object val;
|
|
uint fetched = 0;
|
|
com_enum.Next (1, out val, out fetched);
|
|
if (fetched == 0)
|
|
return false;
|
|
current = val;
|
|
return true;
|
|
}
|
|
|
|
public void Reset () {
|
|
com_enum.Reset ();
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|
|
}
|