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4/8/2010

This message is sent when a pop-up menu is about to become active. This enables an application to modify the pop-up menu before it is displayed, without changing the entire menu.

Syntax 

WM_INITMENUPOPUP
 
	
hmenuPopup = (HMENU)
wParam;
	uPos = (UINT)LOWORD(
lParam);
	fSystemMenu = (BOOL)HIWORD(
lParam);

Parameters

hmenuPopup

Handle to the drop-down menu or submenu.

uPos

Value of the low-order word of lParam. Specifies the command ID of the menu item that opens the drop-down menu or submenu.

fSystemMenu

Value of the high-order word of lParam. Boolean that specifies whether the drop-down menu is the windowmenu (also known as the Systemmenu or the Controlmenu). Set to TRUE if the menu is the windowmenu, or to FALSE otherwise.

Return Value

An application should return zero if it processes this message.

Remarks

The fSystemMenuparameter is always FALSE.

Requirements

Header winuser.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also

Reference

Keyboard Messages