WM_DRAWCLIPBOARDThe WM_DRAWCLIPBOARD message is sent to the first window in the clipboard-viewer chain when the contents of the clipboard change. Only applications that have joined the clipboard-viewer chain by calling the SetClipboardViewer function need to process this message.
This message has no parameters.
An application should return zero if it processes this message.
Each window that receives the WM_DRAWCLIPBOARD message should call the SendMessage function to pass the message on to the next window in the clipboard-viewer chain. The handle of the next window is returned by the SetClipboardViewer function; the handle may be modified in response to a WM_CHANGECBCHAIN message.