The WM_INITMENU message is sent when a menu is about to become active. It occurs when the user clicks an item on the menu bar or presses a menu key. This allows the application to modify the menu before it is displayed.
WM_INITMENU hmenuInit = (HMENU) wParam; // handle of menu to initialize
If an application processes this message, it should return zero.
A WM_INITMENU message is sent only when a menu is first accessed; only one WM_INITMENU message is generated for each access. For example, moving the mouse across several menu items while holding down the button does not generate new messages. WM_INITMENU does not provide information about menu items.
file: /Techref/os/win/api/win32/mess/src/msg24_27.htm, 1KB, , updated: 2000/4/7 11:20, local time: 2024/11/5 00:18,
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