How to call OnFileNew() from a dialog box in MFC VC++?

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I agree that having a global pointer to a view class is not going to work in MDI case, it does cut down a lot of work in SDI's which is what I mostly work on.

Having a function to return a pointer in every dialog box that returns a pointer to it's view class is too much overhead.

Creating a member variable in each Dialog that points to it's base View might work better.

I didn't say put a function in every dialog, I said, or meant, set up a global function that uses the framework to get the view pointer, returning the type that's appropriate for your app. Done properly, it will work for SDI or MDI.