The FMEVENT_HELPMENUITEM message is sent to a File Manager extension DLL procedure when the user presses F1 on a menu or toolbar command item. The extension should call WinHelp, with that function's hwnd parameter set to the value of the extension procedure's hwnd parameter.
FMEVENT_HELPMENUITEM
uItem = (UINT) lParam; /* command item for which help is sought */
Parameters
uItem
Identifies the menu or toolbar command item for which help is sought. The extension procedure uses this value to determine how best to call WinHelp.
Return Values
An extension DLL procedure should return zero if it processes this message.
See Also