Reviewing the Main routine

  #
  # Main
  #

	set app [VtOpen Example]

        set mainform [VtFormDialog $app.form -title "Kill"]

	CreateMenu $mainform
	CreateList $mainform

	VtShow $mainform
	VtMainLoop

1. calls VtOpen(1vtcl) to establish a connection to the server

2. calls VtFormDialog(1vtcl) to create the first form

3. passes the handle of this form dialog to CreateMenu and CreateList

The next several sections discuss the callbacks used by the program.