Reacting to a Button Pressed by the user in a EPD Traits view?

Question

I'm using EPD traits for a basic GUI interface. I'm able to pop up a settings window using code like this:

settings_w.configure_traits(kind="livemodal")

The window has 'OK' and 'Cancel' buttons and I want to do something different depending on which button was pressed to exit the window. Seems like it should be simple but I can't figure out how to set this up.

Theoretically I'd like to do something like this:

# Display the settings widget
settings_w.configure_traits(kind="livemodal")

if settings_w.CancelButtonPressed:
    pass
else:
    print "I got the input"

But let me know if there's a better or more correct way to do this.

Also FWIW: here's the view properties of my settings window with standard OK and Cancel buttons:

view = View( 
    settings_group, 
    title   = 'Settings Editor',
    width = 500,
    buttons = [OKButton, CancelButton, 'Help' ],
    kind = 'modal',
    handler = SaveRestore_Handler()
)

Answer 1

If I understand the question, checking the output of configure_traits should do what you want:

result = settings_w.configure_traits(kind="livemodal")

if result:
    print "The user pressed OK."
else:
    print "The user pressed Cancel or closed the window."