I have a frame which I use as the main form (mainFrame), it inherits from mainFrameBase, which inherits from wxFrame.
It has a “close” system button. When it is pressed the app shuts down. All very much to my liking.
I inherit another frame from mainFrameBase (progScreen). When a button is pressed, the progScreen is shown. When I click its system close button, the form does not close.
What I want to achieve with this setup is that you can click a button on the main frame and a slightly different view of the main frame is shown to allow the user to “progam” certain buttons.
By the way, I’m using WXFormBuilder (excellent program) to create the screens.
What I would do is create two panels with the controls you want, one for the regular screen and one for the programming screen. Then when you want to switch, you hide one panel and show the other. That way, both screens are contained in one frame that when closed, exits the program. I actually have a tutorial that is similar to this here:
http://www.blog.pythonlibrary.org/2010/06/16/wxpython-how-to-switch-between-panels/
Hope that helps!