I've searched high and low for this but can't find an answer...

When a user presses the "back" key (i.e. the right softkey) to move back a screen in an application, how do I catch this?

I know that when the right softkey displays "Exit" you can catch this with the handler...


...but can I handle the event when the right softkey does a "back" to a previous screen in a gui ?

Thanks for any help,