GUI form management

开发者_开发百科What are some common techniques used to navigate between different forms in an application? I've inherited a Windows Mobile C++ MFC application which heavily uses dialog resoures and CFormView classes. I'm trying to find a sane way to handle moving from CFormView to CFormView to display different forms to the user.

It's simple to move from screen to screen in response to a user action, but there are external events that can happen outside of the users control which will cause the program to break the normal form flow. The program currently reacts to these external events unpredictably depending on which form the user was on when the event happened.