WM_INITMENU message

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.

A window receives this message through its WindowProc function.

#define WM_INITMENU                     0x0116

Parameters

wParam

A handle to the menu to be initialized.

lParam

This parameter is not used.

Return value

If an application processes this message, it should return zero.

Remarks

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.

Requirements

Minimum supported client
Windows 2000 Professional [desktop apps only]
Minimum supported server
Windows 2000 Server [desktop apps only]
Header
Winuser.h (include Windows.h)

See also

Reference

WM_INITMENUPOPUP

Conceptual

Keyboard Accelerators