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QT exited with code -1073741510

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  • F Offline
    F Offline
    foxgod
    wrote on last edited by
    #4

    3Q

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    • JKSHJ Online
      JKSHJ Online
      JKSH
      Moderators
      wrote on last edited by
      #5

      You don't need an event loop, so don't call exec().

      @
      // Replace this...
      return a.exec();

      // ...with this:
      return 0;
      @

      If you call exec(), you need to quit your program by triggering QCoreApplication::exit() or QCoreApplication::quit()

      Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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      • F Offline
        F Offline
        foxgod
        wrote on last edited by
        #6

        // Replace this...
        return a.exec();

        // ...with this:
        return 0;

        but how can i get i get terminate message from QCoreApplication::notify() or else method.

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        • jeremy_kJ Offline
          jeremy_kJ Offline
          jeremy_k
          wrote on last edited by
          #7

          I don't think QCoreApplication::notify(), which is used to deliver events, is what you want.

          There's a QCoreApplication::aboutToQuit() signal that indicates that the main event loop is about to terminate, which works pretty well for applications that end main() with "return app.exec();" Minus an event loop, much of Qt won't be of use.

          Perhaps a function that uses printf() and is registered with atexit() will work.

          Asking a question about code? http://eel.is/iso-c++/testcase/

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          • JKSHJ Online
            JKSHJ Online
            JKSH
            Moderators
            wrote on last edited by
            #8

            [quote author="foxgod" date="1402987828"]but how can i get i get terminate message from QCoreApplication::notify() or else method.[/quote]What do you want to do with the message?

            Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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            • F Offline
              F Offline
              foxgod
              wrote on last edited by
              #9

              i want to get console close's message ,when i know the console is closed,then i want to execute some program.

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              • F Offline
                F Offline
                foxgod
                wrote on last edited by
                #10

                @void terminateTest()
                {
                qDebug()<<"program is over"<<endl;
                rootThreadpro.aboutToQuit();
                }

                int main(int argc, char *argv[])
                {
                QCoreApplication a(argc, argv);

                qDebug()<<"Root\n";
                atexit(terminateTest);
                rootThreadpro.StartServer(); 
                return a.exec&#40;&#41;;
                

                }
                @

                this can solve currently question , antthing also?

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                • JKSHJ Online
                  JKSHJ Online
                  JKSH
                  Moderators
                  wrote on last edited by
                  #11

                  [quote author="foxgod" date="1402989786"]i want to get console close's message ,when i know the console is closed,then i want to execute some program.[/quote]You cannot get that message in your application. When you close the console, it terminates your application.

                  Just launch your other program before return 0;

                  I don't recommend closing a console application by clicking the 'X' or Ctrl-C. If your program terminates like this, it won't be able to clean up. Sometimes, this can corrupt your data files.

                  Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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                  • jeremy_kJ Offline
                    jeremy_kJ Offline
                    jeremy_k
                    wrote on last edited by
                    #12

                    It looks like atexit() won't work without some additional handling.

                    bq. Functions registered using atexit() (and on_exit(3)) are not called if a process terminates abnormally because of the delivery of a signal.

                    Asking a question about code? http://eel.is/iso-c++/testcase/

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                    • JKSHJ Online
                      JKSHJ Online
                      JKSH
                      Moderators
                      wrote on last edited by
                      #13

                      Like I said, do not use Ctrl-C, and do not close your console by clicking the 'X'. These are dangerous ways to stop a program.

                      Why don't you quit your program properly?

                      Or, if you really want to close by clicking the 'X', create a QWidget-based GUI. Then, when you click the 'X', you will get a QCloseEvent.

                      Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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                      • jeremy_kJ Offline
                        jeremy_kJ Offline
                        jeremy_k
                        wrote on last edited by
                        #14

                        Sometimes users do unexpected things.

                        Asking a question about code? http://eel.is/iso-c++/testcase/

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