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Qt 5.0.1 and glext.h

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #8

    Do you have QT += opengl in your pro file ?

    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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    • K Offline
      K Offline
      kmt11
      wrote on last edited by
      #9

      Yes, most certainly

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #10

        Is it a simple project ? (Meaning one pro file for all)

        If not check that every other project that uses these class also includes opengl

        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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        • K Offline
          K Offline
          kmt11
          wrote on last edited by
          #11

          It is one pro file only.

          I now notice that, if I try #include <QtOpenGL>, I get "library not found for -IGLU", if that helps.

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #12

            I think I found out the first problem (must be sleepy to have been so long...):

            on mac you have to:

            @#include <OpenGL/gl.h>@

            That is: framework_name/filename.h

            You can surround that with

            @#ifdef Q_OS_MACX
            #include <OpenGL/gl.h>
            #else
            #include <GL/gl.h>
            #endif@

            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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            • K Offline
              K Offline
              kmt11
              wrote on last edited by
              #13

              Thank you. That seems to have fixed it.

              Now builds with no errors.

              The app runs perfectly. Brilliant. You've made my day.

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #14

                You're welcome !

                Don't forget to update your thread's title to solved so other forum users may know that a solution has been found :)

                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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                • K Offline
                  K Offline
                  kmt11
                  wrote on last edited by
                  #15

                  well, the original QT 5 on Windows and glext.h problem isn't solved....

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #16

                    IIRC, there's no glext.h by default on windows. But you can get the file "here":http://www.opengl.org/registry/

                    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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                    • K Offline
                      K Offline
                      kmt11
                      wrote on last edited by
                      #17

                      Got the file thanks. Throwing up an error, but that may be down to internal programming, so will look into that and report back.....

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                      • K Offline
                        K Offline
                        kmt11
                        wrote on last edited by
                        #18

                        Seems that trying to use glext.h throws up dozens of errors, and it's simply too much of a pain to sort this. I have to conclude that legacy opengl cannot be used with Qt 5.
                        Tried reverting to Qt Creator 2.7.1 and Qt 4.8.4 on Windows, but this just refuses to configure a project, and ignores anything set up in the kit options.
                        Qt 4.8 seems to be fine on Mac and a unix box, but Qt 5 has too many problems for us to think about using it as a future ipad app tool. If it has too many problems on Windows, it gives us no confidence that it will be safe for ios development.

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                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #19

                          There must be a glitch in QtCreator's configuration.
                          4.8.4 works pretty well on windows (even custom builds)

                          Depending on your problem, you might consider contacting Digia to sort things out

                          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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