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[Solved] How to show Qt debug messages outside the debugger

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  • G Offline
    G Offline
    goetz
    wrote on last edited by
    #11

    On Mac OS X the debug output goes to the system logger. You can read it with the Console Application (Usually in /Applications/Utilities/Console.app).

    For your own logging facilities "qInstallMsgHandler()":http://doc.qt.nokia.com/latest/qtglobal.html#qInstallMsgHandler is your friend (that's the solution Gerolf mentioned).

    I once wrote a small GUI that collects the qXXX() messages. I can put it in the wiki on request.

    http://www.catb.org/~esr/faqs/smart-questions.html

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    • K Offline
      K Offline
      kamalakshantv
      wrote on last edited by
      #12

      You can get some help using qInstallMsgHandler() from "this":http://lists.trolltech.com/qt-interest/2006-05/msg00602.html thread too.

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      • A Offline
        A Offline
        andre
        wrote on last edited by
        #13

        QxtLogger can install itself the hander for Qt's debug messages as well, and you can use several outputs for your logging info. StdErr/StdOut of course, but also files in different formats.

        The qt += console suggestion given earlier only works on windows.

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        • D Offline
          D Offline
          d.oberkofler
          wrote on last edited by
          #14

          [quote author="Volker" date="1293097794"]On Mac OS X the debug output goes to the system logger. You can read it with the Console Application (Usually in /Applications/Utilities/Console.app).

          For your own logging facilities "qInstallMsgHandler()":http://doc.qt.nokia.com/latest/qtglobal.html#qInstallMsgHandler is your friend (that's the solution Gerolf mentioned).

          I once wrote a small GUI that collects the qXXX() messages. I can put it in the wiki on request.[/quote]

          I think it would be great if you could make your "small GUI that collects the qXXX() messages" available to everyone.

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          • V Offline
            V Offline
            vcsala
            wrote on last edited by
            #15

            @Volker, that would be really nice of you.

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            • K Offline
              K Offline
              kamalakshantv
              wrote on last edited by
              #16

              [quote author="Volker" date="1293097794"]On Mac OS X the debug output goes to the system logger. You can read it with the Console Application (Usually in /Applications/Utilities/Console.app).

              For your own logging facilities "qInstallMsgHandler()":http://doc.qt.nokia.com/latest/qtglobal.html#qInstallMsgHandler is your friend (that's the solution Gerolf mentioned).

              I once wrote a small GUI that collects the qXXX() messages. I can put it in the wiki on request.[/quote]

              Yes, everyone would like such a handy tool.

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              • G Offline
                G Offline
                giesbert
                wrote on last edited by
                #17

                Request :-))

                Nokia Certified Qt Specialist.
                Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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                • G Offline
                  G Offline
                  goetz
                  wrote on last edited by
                  #18

                  I've added a "wiki page":http://developer.qt.nokia.com/wiki/Browser_for_QDebug_output with the source code of the QDebug Log Output Browser.

                  I hope it is useful for somebody and of course feel free to ask, if you have questions.

                  http://www.catb.org/~esr/faqs/smart-questions.html

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                  • A Offline
                    A Offline
                    ashwindas
                    wrote on last edited by
                    #19

                    Thanks Volker, I was also looking for something similar :)

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                    • U Offline
                      U Offline
                      ucomesdag
                      wrote on last edited by
                      #20

                      [quote author="Volker" date="1294011522"]I've added a "wiki page":http://developer.qt.nokia.com/wiki/Browser_for_QDebug_output with the source code of the QDebug Log Output Browser.[/quote]

                      Thanks Volker, fiddling with it at the moment... :-)

                      Write “Qt”, not “QT” (QuickTime).

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                      • G Offline
                        G Offline
                        goetz
                        wrote on last edited by
                        #21

                        I added the .pro file, that was missing from the first version.

                        http://www.catb.org/~esr/faqs/smart-questions.html

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                        • D Offline
                          D Offline
                          d.oberkofler
                          wrote on last edited by
                          #22

                          [quote author="Volker" date="1294011522"]I've added a "wiki page":http://developer.qt.nokia.com/wiki/Browser_for_QDebug_output with the source code of the QDebug Log Output Browser.
                          I hope it is useful for somebody and of course feel free to ask, if you have questions.[/quote]
                          Thank you!

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