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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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WM_INITMENUPOPUP
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
Parameters
hmenuPopup
Value of wParam. Identifies the drop-down menu or submenu.
uPos
Value of the low-order word of lParam. Specifies the zero-based relative position of the menu item that opens the
drop-down menu or submenu.
fSystemMenu
Value of the high-order word of lParam. Specifies whether the drop-down menu is the window menu (also known as the System menu or the Control menu). If the menu is the window menu, this parameter is TRUE; otherwise, it is FALSE.
Return Values
If an application processes this message, it should return zero.
See Also
WM_INITMENU
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Unix Manual Pages
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