Thread: Problem with MSVC debugger - can't get it to break?

  1. #1
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    Problem with MSVC debugger - can't get it to break?

    I'm creating an MFC based dialog program. One Dialog has a button that launches a second modal dialog with a simple function - looks like this:
    Code:
    void CFrameDlg::OnBnClickedPreview()
    {
    	CPreviewDlg Dlg;
    	Dlg.DoModal();
    }
    I want to step through functions in the CPreviewDlg class, but if I put a breakpoint in the CPreviewDlg class, it never breaks. If I put a breakpoint in the above function (which is in the main dialog), it never breaks. How to I make it break?

  2. #2
    Registered User The Dog's Avatar
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    Make sure you're debugging the program and not simply running it.

  3. #3
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    Quote Originally Posted by The Dog
    Make sure you're debugging the program and not simply running it.
    I am definitely debugging.

  4. #4
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    Quote Originally Posted by BrianK
    I'm creating an MFC based dialog program. One Dialog has a button that launches a second modal dialog with a simple function - looks like this:
    Code:
    void CFrameDlg::OnBnClickedPreview()
    {
    	CPreviewDlg Dlg;
    	Dlg.DoModal();
    }
    I want to step through functions in the CPreviewDlg class, but if I put a breakpoint in the CPreviewDlg class, it never breaks. If I put a breakpoint in the above function (which is in the main dialog), it never breaks. How to I make it break?
    Try putting it in the CPreviewDlg constructor and see if it ever gets created. Also just try setting some breakpoints in WinMain to make sure those are getting hit. It may just be that the method is never getting called.
    "...the results are undefined, and we all know what "undefined" means: it means it works during development, it works during testing, and it blows up in your most important customers' faces." --Scott Meyers

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