Handling that Pesky Windows ControlBox

(Paul Kimmel) The Red X, ControlBox, or whatever you call it, can be pesky. The ControlBox closes a window in a WinForms application. That's what it's for. If that form is the last open form or the main form, your application closes. If you handle the FormClosing event, you can Cancel the close operation. But, what happens if you write something like a wizard and the current form is not the main form? The current form closes, but now the user is left staring at a blank screen.