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  1. #1
    Registered User
    Join Date
    Jul 2009

    QApplication construction fails


    I have a simple UI application that has a single QApplication object. When i try to start it twice i get this error showing on the screen:

    "Program Closed: Main CONE 28"

    The first instance of the UI still runs fine.

    When debugging, it shows that it fails at the point where it tries to construct the QApplication object (second time round).

    Is there a way to prevent this?


  2. #2
    Super Contributor
    Join Date
    Oct 2009

    Re: QApplication construction fails

    For any GUI application using Qt, there is precisely one QApplication object, no matter whether the application has 0, 1, 2 or more windows at any given time.

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