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Forum Update on Tuesday, May 27th 2025

Application does not see related .dlls

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  • MasterBLBM Offline
    MasterBLBM Offline
    MasterBLB
    wrote on last edited by
    #1

    Hey fellow programmers

    Today I've encountered something weird:
    https://imgur.com/a/aBuQVWq
    This message means that MechDesigner.exe cannot find Qt5Core.dll. But how it is possible, as the file is near to the .exe??? (Ah, and I don't mess with QCoreApplication::libraryPaths) All related Qt stuff (gui, widgets) is also there, as you mates can see.
    In \plugins there are \platforms\qwindows.dll , and \styles\qwindowsvistastyle.dll
    I have no clue what's wrong with this installation :/ Could you help?

    Btw, target OS is Windows 10, the app was built on Windows 7.

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    • MasterBLBM Offline
      MasterBLBM Offline
      MasterBLB
      wrote on last edited by
      #3

      Thanks for the hint, that windeployqt looks very promising.
      And the issue is solved, the person I gave the application tried to run it from inside of archive <facepalm>

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #2

        Hi,

        Might be a silly question but are you sure you copied the right .dlls. From the looks of it, there's a chance you are using MinGW, so are these libs from the MinGW build of Qt ?

        To simplify your life, you should use windeployqt, it will gather your application dependencies and related plugins.

        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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        • MasterBLBM Offline
          MasterBLBM Offline
          MasterBLB
          wrote on last edited by
          #3

          Thanks for the hint, that windeployqt looks very promising.
          And the issue is solved, the person I gave the application tried to run it from inside of archive <facepalm>

          1 Reply Last reply
          1

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