WM_PAINTCLIPBOARD Overview  Group

The WM_PAINTCLIPBOARD message is sent to the clipboard owner by a clipboard viewer window when the clipboard contains data in the CF_OWNERDISPLAY format and the clipboard viewer’s client area needs repainting.

WM_PAINTCLIPBOARD 

hwndViewer = (HWND) wParam;     // handle of clipboard viewer window 

hglbPs = (HGLOBAL) lParam;      // handle of PAINTSTRUCT object 

 

Parameters

hwndViewer

Value of wParam. Identifies the clipboard viewer window.

hglbPs

Value of lParam. Identifies a global DDESHARE object that contains a PAINTSTRUCT structure. The structure defines the part of the client area to paint.

Return Values

If an application processes this message, it should return zero.

Remarks

To determine whether the entire client area or just a portion of it needs repainting, the clipboard owner must compare the dimensions of the drawing area given in the rcpaint member of PAINTSTRUCT to the dimensions given in the most recent WM_SIZECLIPBOARD message.

The clipboard owner must use the GlobalLock function to lock the memory that contains the PAINTSTRUCT structure. Before returning, the clipboard owner must unlock that memory by using the GlobalUnlock function.

See Also

GlobalLock, GlobalUnlock, PAINTSTRUCT, WM_SIZECLIPBOARD