How do I override setmodifiedflag?

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The title of this post does not accurately caption my question. I couldn't think of a concise caption.

In an MFC Doc/View application , once SetModifiedFlag() is called after user activity occurs, an MFC generated or called messagebox appears whenever an attempt is made to close an unsaved document.

I wish to change the colour of that MFC called or generated messagebox so as to match the colour of the controls and messageboxes n my application. How do I do this?

I am willing to override an appropriate MFC function that will enable me use my own custom messagebox, but I don't really know which function to override? Does anyone hear know the appropriate function to override?

What I have tried:

I have spent time googling to no avail.

Posted 7-Jun-17 15:50pm

Gbenbam

Updated 7-Jun-17 21:01pm

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Jochen Arndt · Answer 1 · 2017-06-07T21:01:00

To implement your own message box override the virtual CDocument::SaveModified[^] function in your CDocument derived class:

BOOL CMyDocument::SaveModified()
{
    if (!IsModified())
        return TRUE;

    // Show your own message box here.
    // Return TRUE to continue and close the document, and
    //  FALSE if the document should not be closed.
}

You may also look at the default implementation in doccore.cpp in the MFC source directory.