CWnd::SetClipboardViewer
Visual Studio 2010
Adds this window to the chain of windows that are notified (by means of the WM_DRAWCLIPBOARD message) whenever the content of the Clipboard is changed.
HWND SetClipboardViewer( );
A window that is part of the Clipboard-viewer chain must respond to WM_DRAWCLIPBOARD, WM_CHANGECBCHAIN, and WM_DESTROY messages and pass the message to the next window in the chain.
This member function sends a WM_DRAWCLIPBOARD message to the window. Since the handle to the next window in the Clipboard-viewer chain has not yet been returned, the application should not pass on the WM_DRAWCLIPBOARD message that it receives during the call to SetClipboardViewer.
To remove itself from the Clipboard-viewer chain, an application must call the ChangeClipboardChain member function.