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Missing DLLs in QT6....I think

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  • M Offline
    M Offline
    MuscleNerdJP
    wrote 21 days ago last edited by
    #1

    Greetings all,

    I am trying to compile a source code for a program called Bino 3D in Visual Studio 2022. It is a QT6 based program so I have installed Qt6.9.1 and all of it's features. After some tinkering, I have gotten the included cmake to run correctly. Now where I try to complete the debugging process I get a System Error stating that these file are not found:

    Qt6OpenGld.dll
    Qt6Multimediad.dll
    QtOpenGlWidgetsd.dll
    Qt6Widgetsd.dll

    I've tried reinstalling Qt6.9.1, but the error keeps coming up. This is my first time trying to compile source code, so I was hoping someone could tell me what I'm doing wrong. I'm trying to figure this out as I go, but I can't find a solution to this anywhere. Any guidance would be most appreciated! Thanks!

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    • J Online
      J Online
      JonB
      wrote 21 days ago last edited by
      #2

      All of these are debug versions of the DLLs. Make sure you have installed them and they are in a suitable place for the executable to see. Or try not compiling for debug and verify that finds the non-debug versions.

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      • M Offline
        M Offline
        MuscleNerdJP
        wrote 21 days ago last edited by MuscleNerdJP
        #3

        Near as I can tell, the Qt6 installer is not adding these DLLs (debug or otherwise) anywhere. Is there something else I am suppose to do to get them?

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        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote 21 days ago last edited by
          #4

          Hi,

          What if you use Qt Creator to build the application ?

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • C Online
            C Online
            Christian Ehrlicher
            Lifetime Qt Champion
            wrote 21 days ago last edited by
            #5

            These dlls are installed in the same directory as the release dlls - <QTDIR>\version<compiler_type>\bin

            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
            Visit the Qt Academy at https://academy.qt.io/catalog

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            24 Jun 2025, 14:53

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