The MDINEXTMENU structure contains information about the menu to be activated.
typedef struct tagMDINEXTMENU
{
HMENU hmenuIn;
HMENU hmenuNext;
HWND hwndNext;
} MDINEXTMENU, *PMDINEXTMENU, FAR * LPMDINEXTMENU;
Windows NT: Requires version 4.0 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in winuser.h.
Menus Overview, Menu Structures, WM_NEXTMENU