PRB: TrackPopupMenu() on LoadMenuIndirect() Menu Causes UAE

ID: Q75254

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK)
Microsoft Win32 Software Development Kit (SDK), on platform(s):
- Microsoft Windows NT, versions 3.5, 3.51
- Microsoft Windows 95

SYMPTOMS

When LoadMenuIndirect() is used to create a menu from a menu template and the menu handle is passed to TrackPopupMenu(), Windows reports an unrecoverable application error (UAE). Windows NT and Windows 95 display the floating pop-up menu as a vertical bar.

CAUSE

The menu handle returned from LoadMenuIndirect() does not point to a menu with the MF_POPUP bit set.

RESOLUTION

The following code fragment demonstrates the correct procedure to "wrap" the menu created by LoadMenuIndirect() inside another menu. This procedure sets the MF_POPUP bit properly.


   hMenu1 = LoadMenuIndirect(lpMenuTemplate);

   hMenuDummy = CreateMenu();
   InsertMenu(hMenuDummy, 0, MF_POPUP, hMenu1, NULL);

   hMenuToUse = GetSubMenu(hMenuDummy, 0);

Use hMenuToUse when TrackPopupMenu() is called. The values of hMenu1 and hMenuToUse should be the same.

When the menu is no longer required, call DestroyMenu() to remove hMenuDummy. This call will also destroy hMenu1 and free the resources it used.


Keywords          : kbcode kbMenu kbNTOS350 kbNTOS351 kbResource kbGrpUser kbWinOS kbWinOS95 
Version           : 
Platform          : 
Issue type        : kbprb

Last Reviewed: March 7, 1999