WM_MDISETMENU

An application sends the WM_MDISETMENU message to a multiple document interface (MDI) client window to replace the entire menu of an MDI frame window, to replace the Window menu of the frame window, or both.

WM_MDISETMENU 
wParam = (WPARAM) (HMENU) hmenuFrame;  // handle to frame menu 
lParam = (LPARAM) (HMENU) hmenuWindow; // handle to Window menu 
 

Parameters

hmenuFrame

Value of wParam. Handle to the new frame window menu. If this parameter is NULL, the frame window menu is not changed.

hmenuWindow

Value of lParam. Handle to the new Window menu. If this parameter is NULL, the Window menu is not changed.

Return Values

If the message succeeds, the return value is the handle to the old frame window menu.

If the message fails, the return value is zero.

Remarks

After sending this message, an application must call the DrawMenuBar function to update the menu bar.

If this message replaces the Window menu, the MDI child window menu items are removed from the previous Window menu and added to the new Window menu.

If an MDI child window is maximized and this message replaces the MDI frame window menu, the window menu icon and restore icon are removed from the previous frame window menu and added to the new frame window menu.

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

Multiple Document Interface Overview, Multiple Document Interface Messages, DrawMenuBar, WM_MDIREFRESHMENU