How to set "appQuitting = true"

Getting Started
1

How do I set the cancelClose event parameter appQuitting to True.

2

You cannot. AppQuitting informs you if the window wants to close because it is simply being closed or because of the app shutting down.
(Or, in other words: You do so by calling quit)

3

AppQuitting is FALSE if you are just closing the associated window
it is True is the window is closing during the App shutdown phase

4

Thanks. I had alternate window that I would allow a couple of ways to close the app. I had done all sorts of stuff to make sure it would close. I had implemented Quit, but not a test for cancelClose and appquiting. Solved.