afx_msg void OnMenuSelect( UINT nItemID, UINT nFlags, HMENU hSysMenu );
nItemID
Identifies the item selected. If the selected item is a menu item, nItemID contains the menu-item ID. If the selected item contains a pop-up menu, nItemID contains the pop-up menu handle.
nFlags
Contains a combination of the following menu flags:
| Flag | Description |
| MF_BITMAP | Item is a bitmap. |
| MF_CHECKED | Item is checked. |
| MF_DISABLED | Item is disabled. |
| MF_GRAYED | Item is dimmed. |
| MF_MOUSESELECT | Item was selected with a mouse. |
| MF_OWNERDRAW | Item is an owner-draw item. |
| MF_POPUP | Item contains a pop-up menu. |
| MF_SEPARATOR | Item is a menu-item separator. |
| MF_SYSMENU | Item is contained in the Control menu. |
hSysMenu
Identifies the menu associated with the message, if nFlags contains MF_SYSMENU.
If the CWnd is associated with a menu, OnMenuSelect is called when the user selects a menu item.
If nFlags contains -1 and hSysMenu contains 0, Windows has closed the menu because the user pressed ESC or clicked outside the menu.
This message-handler member function calls the Default member function. Override this member function in your derived class to handle the WM_MENUSELECT message.
CWnd::Default, WM_MENUSELECT, CMenu::FromHandle