Accessibility MSAA

[Chougule Vinay]

Dear all,
Is Accessibility supported for NativeWindow in C# .Net.
If yes, please please provide help links.

A sample code for building the msaa server for a window is shown below.
The microsoft msaa client AccExplorer32.exe is not able to call my server.
Please let me know if there is anything else to be done there.
case WM_GETOBJECT:
{
if (m.LParam.ToInt64() == -4)
{
System.Guid guid = new System.Guid
("{618736E0-3C3D-11CF-810C-00AA00389B71}");
try
{
ToolTipAccessibleObject tooltipObj = new ToolTipAccessibleObject();
Accessibility.IAccessible iAccessible = tooltipObj;
IntPtr comptr = Marshal.GetIUnknownForObject (iAccessible);

unsafe
{
m.Result = LresultFromObject (&guid, m.WParam, comptr);
//m.Result is some +ve value (196, ....) .. i think it succeeds
}
Marshal.Release (comptr);

}
catch (Exception exception)
{
throw exception;
}
}
this.DefWndProc(ref m);
return;
}

Thanks for your time,