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Simple MFC question

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I'm new to MFC and am trying to find what functions I use for communicating between doc, view, frame and app classes. I know if I'm in the app class I can use something like this to communicate with the views associated with my app:
CWnd* mainFrame = AfxGetMainWnd();
CView* myView=(CView*)mainFrame->GetWindow(IDR_CHILD);
myView->SomeFunction();


But what If I'm coding in a derived CView class and I want to call a function from my main app class? What function do I use to point back to the app class. I know MFC must have a function for that I just can't find it.

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you can use AfxGetApp to get a pointer to the main app object, which you can then cast to your own derived app class. Just be warned that there are pitfalls involved in this, and it increases the coupling between your classes.

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