WM_SIZECLIPBOARD

The WM_SIZECLIPBOARD 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 has changed size.

WM_SIZECLIPBOARD 
hwndViewer = (HWND) wParam;  // handle of clipboard viewer window 
hglbRc = (HGLOBAL) lParam;   // handle of RECT object 
 

Parameters

hwndViewer

Value of wParam. Handle to the clipboard viewer window.

hglbRc

Value of lParam. Handle to a global memory object that contains a RECT structure. The structure specifies the new dimensions of the clipboard viewer's client area.

Remarks

When the clipboard viewer window is about to be destroyed or resized, a WM_SIZECLIPBOARD message is sent with a null rectangle (0, 0, 0, 0) as the new size. This permits the clipboard owner to free its display resources.

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

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in winuser.h.

See Also

Clipboard Overview, Clipboard Messages, GlobalLock, GlobalUnlock, RECT