REFERENCE GUIDE

CommentsIParamIs not used.If the window being destroyed is part of the clipboard-viewer chain (setby using the SetClipboardViewer function), the window must removeitself from the clipboard viewer chain by processing theChangeClipboardChain function before returning from theWM_DESTROY message.WM DESTROYCLIPBOARDThis message is sent to the clipboard owner when the clipboard isemptied through a call to the EmptyClipboard function.Parameters wParam Is not used.IParamIs not used.•WM_DEVMODECHANGEThis message is sent to all top-level windows when the user changesdevice-mode settings.Parameters wParam Is not used.IParamPoints to the device name specified in the Windowsinitialization file, WIN.INI.WM DRAWCLIPBOARDThis message is sent to the first window in the clipboard-viewer chainwhen the contents of the clipboard change. Only applications that havejoined the clipboard-viewer chain by calling the SetClipboardViewerfunction need to process this message.Parameters wParam Is not used.CommentsIParamIs not used.Each window that receives the WM_DRA WCLIPBOARD message sh9uldcall the SendMessage function to pass the message on to the next windowin the clipboard-viewer chain. The handle of the next window is returnedby the SetClipboardViewer function; it may be modified in response to aWM_CHANGECBCHAIN message.Chapter 6, Messages directory 649