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Installing softwares using installers in Qt Application

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  • A Offline
    A Offline
    arkenoid
    wrote on last edited by
    #1

    Hii all..

    I want to install some softwares from their .exe installers from the Qt application. For this i simply used this commands..

    First Qprocess Header file is included and the following line is added after the main windows show line.

    @process.start("cmd", QStringList() << "C:\CodeBlocks_setup.exe");@

    But nothing is happening.. It is saying that an instance of CMD is running but no Installation wizard shows up..

    But, if i enter the "C:\CodeBlocks_setup.exe" inside cmd prompt, the installation wizard shows up...

    What is the problem with the Qt API above ?

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    • A Offline
      A Offline
      arkenoid
      wrote on last edited by
      #2

      Even as simple as
      @process.start("cmd", QStringList() << "help");@
      is not showing anything..

      But, this should output the "help" command output in cmd.

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      • M Offline
        M Offline
        MuldeR
        wrote on last edited by
        #3

        Why not run the installer directly?
        @QProcess process;
        process.start("C:\CodeBlocks_setup.exe", QStringList());@

        Anyway, if you want to use the command interpreter, then try:
        @QProcess process;
        QStringList args;
        args << "/c";
        args << "C:\CodeBlocks_setup.exe";
        process.start("cmd.exe", args);@

        __

        See also:
        [quote]C:\Users\MuldeR>cmd /?
        Starts a new instance of the Windows command interpreter

        CMD [/A | /U] [/Q] [/D] [/E:ON | /E:OFF] [/F:ON | /F:OFF] [/V:ON | /V:OFF]
        [[/S] [/C | /K] string]

        /C Carries out the command specified by string and then terminates[/quote]

        My OpenSource software at: http://muldersoft.com/

        Qt v4.8.6 MSVC 2013, static/shared: http://goo.gl/BXqhrS

        Go visit the coop: http://youtu.be/Jay...

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        • M Offline
          M Offline
          MuldeR
          wrote on last edited by
          #4

          BTW: You may which to use "%COMSPEC%":http://en.wikipedia.org/wiki/ComSpec instead of hardcoding the path to the command interpreter ("cmd.exe"):

          @const wchar_t envComSpec = _wgetenv(L"ComSpec");
          const QString comSpec = QString::fromUtf16(reinterpret_cast<const ushort
          >(envComSpec ? envComSpec : L"cmd.exe"));
          /.../
          process.start(comSpec, args);@

          My OpenSource software at: http://muldersoft.com/

          Qt v4.8.6 MSVC 2013, static/shared: http://goo.gl/BXqhrS

          Go visit the coop: http://youtu.be/Jay...

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          • A Offline
            A Offline
            arkenoid
            wrote on last edited by
            #5

            Thanks MuldeR...

            All of the above methods worked.. :D
            I had already tried first method, but i guess i did somewhere wrong..

            I never heard of ComSpec... Thankyou again...

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