Dynamic menu using mfc

Question

I would like to add a menu item to my main menu and then populate it with items at run time. How would I do this? And besides adding items how would I have a message map en

Answer 1

  CMenu menuPopup;
  menuPopup.LoadMenu(IDR_CNTXT_PLAN);
subMenu.CreatePopupMenu();
 subMenu.AppendMenu(MF_STRING, MENU1,"Menu1");
subMenu.AppendMenu(MF_STRING, MENU2,"Menu2");
CMenu* pMenu = menuPopup.GetSubMenu(0);
  pMenu->InsertMenu(0,MF_BYPOSITION|MF_POPUP,(UINT)subMenu.m_hMenu,"Layers");
  menuPopup.GetSubMenu(0)->InsertMenu(1,MF_BYPOSITION|MF_SEPARATOR,0,"");
menuPopup.GetSubMenu(0)->TrackPopupMenu(TPM_LEFTALIGN, point.x, point.y, this);