Displays a popup menu.
- [in] uiMenuResId
A menu resource ID.
- [in] point
A CPoint that specifies the position of the menu in screen coordinates.
- [in] pWnd
A pointer to the window that owns the popup menu.
Nonzero if the popup menu is displayed successfully; 0 otherwise.
This method displays the menu associated with uiMenuResId.
To support popup menus, you must have a CContextMenuManager object. If you have not initialized the CContextMenuManager object, ShowPopupMenu will fail.