  Title   : PopupMenu Reentrancy Problem
  Keywords: POPUPMENU REENTRANCY CONTAINER MENU POPUP MODAL MDI

  This little demo project shows a reentrancy pitfall when popup menus are
  organized on a (invisible) menu container form. It demonstrates that a popup
  menu  refuses to appear on a modal form when the form is opened by an entry
  of a  popup menu; this doesn't happen with modeless or MDI child forms.
  Helpful for  studying non-reentrancy of VB code. Code fully commented.
