The WM_INITMENUPOPUP message is sent when a drop-down menu or submenu is about to become active. This allows an application to modify the menu before it is displayed, without changing the entire menu.
WM_INITMENUPOPUP hmenuPopup = (HMENU) wParam; // handle of submenu uPos = (UINT) LOWORD(lParam); // submenu item position fSystemMenu = (BOOL) HIWORD(lParam); // window menu flag
If an application processes this message, it should return zero.
|file: /Techref/os/win/api/win32/mess/src/msg24_28.htm, 1KB, , updated: 2000/4/7 12:20, local time: 2022/5/23 11:34,
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