🚀 go-pugleaf

Many thanks all working fine now

Ray
"Marc Rohloff [TeamB]" <"on request"> wrote in message 
news:80n5rkq4zz6p.dlg@dlg.marcrohloff.com...
> On Sat, 20 Jan 2007 17:28:43 -0000, Ray wrote:
>
>> Hi
>>
>> I am trying to use WM_COPYDATA to send data between applications. I can 
>> send
>> one integer successfully but if I try to send more than one the second is
>> garbage.
>
>> cds.cbData = Marshal.SizeOf(cds.dwData);
> This should be
> cds.cbData = Marshal.SizeOf(sendData);
>
> A simpler way to call SendMessage would be:
>
> public class Win32
> {
>   [DllImport("user32.dll", CharSet=CharSet.Ansi)]
>   public static extern int SendMessage(
>                                   HandleRef hWnd,
>                                   int msg,
>                                   IntPtr wParam,
>                                   [In, Out,
>                                    MarshalAs(UnmanagedType.LPStruct)]
>                                   CopyDataStruct lParam);
>
>   [StructLayout(LayoutKind.Sequential, Pack=4)]
>   public struct CopyDataStruct
>   {
>     public int dwData;
>     public int cbData;
>     public IntPtr data;
>   }
>
> This way you can just pass a CopyDataStruct into SendMessage without
> having to worry about Marshalling it.
>
>
> -- 
> Marc Rohloff [TeamB]
> marc rohloff -at- myrealbox -dot- com