Using CMenu::TrackPopupMenu as an Immediate Function

It is possible to make the TrackPopupMenu method of CMenu return the value of the item that was selected rather than having to process the menu commands through the message map. This is possible using the two flags TPM_NONOTIFY and TPM_RETURNCMD. As their names imply the first causes the menu not to send a command massage, and the second causes the method to return the ID of the command selected. If no command was selected the value returned is 0.


CMenu menu;
int pMenuID = 0;
DWORD SelectionMade;
VERIFY(menu.LoadMenu(IDR_MENU1));

CMenu* pPopup = menu.GetSubMenu(pMenuID);
ASSERT(pPopup != NULL);

POINT pp;
GetCursorPos(&pp);
SelectionMade = pPopup->TrackPopupMenu(
	TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_NONOTIFY | TPM_RETURNCMD,
	pp.x,pp.y,this);

pPopup->DestroyMenu();

//The value of SelectionMade is
//the id of the command selected
//or 0 if no selection was made

switch(SelectionMade)
{
	// ..... do something here .....
}

Last updated: 18 April 1998