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Thread: Qt 5.5 MinGW issue

  1. #1
    Join Date
    Jun 2007
    Qt products
    Qt3 Qt4 Qt5
    Unix/X11 Windows

    Default Qt 5.5 MinGW issue

    My project was designed in Linux Mint 17.3 and works very well.

    However, attempting to run the same app in XP with MinGW 4.9.2, only one form outputs a warning, information, or an error???:

    Qt Code:
    1. Invalid source devmode on start
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    The form is a QDialog which starts a Printer Dialog and-or a Print Preview Dialog.

    The message occurs as the form is loaded before the first line of the constructor and not in any function after.

    In every other respect, the form operates as expected.

    I have no idea what this means nor where to look for an answer.
    Is it worth pursuing or should I ignore it on Windows?
    Has anyone encountered it before?

    Help would be appreciated.

  2. #2
    Join Date
    Jan 2008
    Alameda, CA, USA
    Thanked 776 Times in 766 Posts
    Qt products
    Windows Android

    Default Re: Qt 5.5 MinGW issue

    I assume you rebuilt all of your code and are linking to the right Qt and Windows .libs and that the corresponding DLLs are the ones found first by Windows when it looks in your PATH? And that you are not accidentally mixing Debug and Release DLLs with your EXE?

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