Hello,

Im trying to fetch a Drop-event, and everything goes fine until I call the
"GetData" method.

Ive tried both to catch the drop with defining FormatEtc to a CF_HDROP and
iterating Formats with "EnumFormatEtc" both returns same error...

Im guessing it doesnt like the input of FormatEtc or StgMedium params but
have compared my input with other working C++ code and I cant see any diff.

here are my definitions:

[ComVisible(false), StructLayout(LayoutKind.Sequential)]
public struct StgMedium {
 [MarshalAs(UnmanagedType.U4)]
 public StorageMedia tymed;
 public IntPtr p;
 [MarshalAs(UnmanagedType.IUnknown)]
 public IntPtr pUnkForRelease;
}

[ComVisible(false), StructLayout(LayoutKind.Sequential)]
public struct FormatEtc {
 [MarshalAs(UnmanagedType.I4)]
 public int cfFormat;
 public IntPtr ptd;
 [MarshalAs(UnmanagedType.U4)]
 public DeviceAspects dwAspect;
 [MarshalAs(UnmanagedType.I4)]
 public int lindex;
 [MarshalAs(UnmanagedType.U4)]
 public StorageMedia tymed;
}

and the IDataObject::GetData method:

[PreserveSig]
int GetData([In]ref FormatEtc pformatetcIn, [In, Out] ref StgMedium
pmedium);

and one of the calls:

----------------------

FormatEtc formatetc = new FormatEtc();
formatetc.cfFormat = (int)Shell32.CF_HDROP;
formatetc.ptd = IntPtr.Zero;
formatetc.dwAspect = DeviceAspects.Content;
formatetc.lindex = -1;
formatetc.tymed = StorageMedia.HGlobal;

StgMedium stgMedium = new StgMedium();
pDataObj.GetData(ref formatetc, ref stgMedium);

Anyone?

//DH