public void SetData(short dataFormat, int index, FileDescriptor descriptor)
{
_dataObjects.Add(
new DataObject {
FORMATETC = new FORMATETC {
cfFormat = dataFormat,
ptd = IntPtr.Zero,
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = index,
tymed = TYMED.TYMED_ISTREAM
},
GetData = () => {
// Create IStream for data
var iStream = NativeMethods.CreateStreamOnHGlobal(IntPtr.Zero, true);
if (descriptor.StreamContents != null)
{
// Wrap in a .NET-friendly Stream and call provided code to fill it
using (var stream = new IStreamWrapper(iStream)) {
descriptor.StreamContents(descriptor.GrfData, descriptor.FilePath, stream, descriptor.Argument);
}
}
// Return an IntPtr for the IStream
IntPtr ptr = Marshal.GetComInterfaceForObject(iStream, typeof(IStream));
Marshal.ReleaseComObject(iStream);
return(new Tuple <IntPtr, int>(ptr, NativeMethods.S_OK));
},
});
}
public void SetData(short dataFormat, int index, FileDescriptor descriptor) {
_dataObjects.Add(
new DataObject {
FORMATETC = new FORMATETC {
cfFormat = dataFormat,
ptd = IntPtr.Zero,
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = index,
tymed = TYMED.TYMED_ISTREAM
},
GetData = () => {
// Create IStream for data
var iStream = NativeMethods.CreateStreamOnHGlobal(IntPtr.Zero, true);
if (descriptor.StreamContents != null) {
// Wrap in a .NET-friendly Stream and call provided code to fill it
using (var stream = new IStreamWrapper(iStream)) {
descriptor.StreamContents(descriptor.GrfData, descriptor.FilePath, stream, descriptor.Argument);
}
}
// Return an IntPtr for the IStream
IntPtr ptr = Marshal.GetComInterfaceForObject(iStream, typeof(IStream));
Marshal.ReleaseComObject(iStream);
return new Tuple<IntPtr, int>(ptr, NativeMethods.S_OK);
},
});
}