int = GetOpenClipboardWindow()
The GetOpenClipboardWindow
function retrieves the handle of the window that currently has the
clipboard open.
Comments
If an application or dynamic-link library (DLL) specifies a NULL
window handle when calling the OpenClipboard function, the clipboard is
opened but is not associated with a window. In such a case,
GetOpenClipboardWindow returns NULL.
Win32 API References
Search for GetOpenClipboardWindow at msdn, google or google groups.
Return Value
If the function succeeds, the return value is the handle of the
window that has the clipboard open.
If the function fails, win32api.error is raised with the GetLastError
info.