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The application was unable to start correctly 0xc000007b

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qt5.8.0qwtvisual studiowindeployqtdeployment
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  • O Offline
    O Offline
    onat
    wrote on last edited by onat
    #1

    Hello everyone,
    I am developing an application using Qt5.8 and Qwt6.1.3 with Visual Studio on a Windows 10 platform.

    I used windeployqt to generate an exe file from my solution, which always worked without any problems in the past. However, this time it failed and I got the error message in the title when I tried to run the program by double-clicking on the generated exe file. I think the problem is caused by the presence of Qwt. Because in the earlier versions of my program I did not use Qwt and everything ran smooth. I tried copying the qwt.dll to fix the problem, but it did not make a difference.
    How can I fix this problem? Thanks in advance.

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    • O Offline
      O Offline
      onat
      wrote on last edited by
      #2

      By the way, some more information:
      In the project properties on Visual Studio, I added
      "$(QTDIR)\Qwt-6.1.3\include" under Additional Include Directories,
      "$(QTDIR)\Qwt-6.1.3\lib" under Additional Library Directories,
      "qwt.lib" under Additional Dependencies and QWT_DLL under Preprocessor definitions.
      To generate the exe file, I (as always) followed the instructions on https://github.com/daviddrell/visualsc/wiki/How-to-Deploy-a-Qt-5-Application-for-Windows
      In step 4 of the instructions I copies qwt.dll under the application directory, because it was missing. but it didnt help solve the problem.

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #3

        Hi,

        You should use Dependency Walker to check whether you have missing dependencies for your application (e.g. some Qwt stuff).

        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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        • O Offline
          O Offline
          onat
          wrote on last edited by
          #4

          Hello @SGaist,
          I followed your advice and it worked. Apparently the Qt5PrintSupport.dll and Qt5OpenGL.dll files were missing. I copied them to the application directory and it worked.
          Thank you very much.

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          • V Offline
            V Offline
            veofficial
            wrote on last edited by
            #5

            Perhaps some dll files are missing.

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