CMenu menu;
 ClientToScreen(&point);
 VERIFY( menu.LoadMenu( IDR_MENU1 ) );
 CMenu* popup = menu.GetSubMenu(0);
 ASSERT( popup != NULL );
 popup->EnableMenuItem(ID_POPUP1, MF_BYCOMMAND|MF_GRAYED);
 popup->ModifyMenu(ID_POPUP1,MF_BYCOMMAND,ID_POPUP1, "11");
 popup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y, this );