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  4. What would be object name which sends event (Solved)
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What would be object name which sends event (Solved)

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  • D Offline
    D Offline
    dangelog
    wrote on last edited by
    #3

    Use QObject::sender() inside your slot to get a pointer to the emitter object.

    Software Engineer
    KDAB (UK) Ltd., a KDAB Group company

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    • G Offline
      G Offline
      goetz
      wrote on last edited by
      #4

      Be aware, that the object returned by sender() is only valid if the slot is called via signal/slot connection (using QObject::connect() method). When the slot is called directly, sender() returns a null pointer.

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

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      • Y Offline
        Y Offline
        Yash
        wrote on last edited by
        #5

        Thank you Gerolf Reinwardt

        Yes Volker it's via signal/slot

        http://kineticwing.com : Web IDE, QSS Editor
        http://speedovation.com : Development Lab

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        • G Offline
          G Offline
          goetz
          wrote on last edited by
          #6

          Good. Nontheless, I'd put a check if(pObject) { ... } around the code, just to be on the save side.

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

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          • Y Offline
            Y Offline
            Yash
            wrote on last edited by
            #7

            Ok nice. Now I'll also :)

            http://kineticwing.com : Web IDE, QSS Editor
            http://speedovation.com : Development Lab

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            • G Offline
              G Offline
              giesbert
              wrote on last edited by
              #8

              I wanted to keep it as small as possible, but I would also do it :-)

              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
                #9

                To save you a line :-) you can write this:

                @
                void myslot()
                {
                    if(QObject* pObject = sender()) {
                    QString name = pObject->objectName();
                }
                }
                @

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

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                • T Offline
                  T Offline
                  tobias.hunger
                  wrote on last edited by
                  #10

                  QSignalMapper might be an option for you, too.

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                  • Y Offline
                    Y Offline
                    Yash
                    wrote on last edited by
                    #11

                    It's rocking guys
                    Nice one Volker :)

                    [quote author="Gerolf Reinwardt" date="1292514405"]I wanted to keep it as small as possible, but I would also do it :-)[/quote]

                    Totally agreed with you :)

                    http://kineticwing.com : Web IDE, QSS Editor
                    http://speedovation.com : Development Lab

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                    • Y Offline
                      Y Offline
                      Yash
                      wrote on last edited by
                      #12

                      [quote author="Tobias Hunger" date="1292515404"]QSignalMapper might be an option for you, too.[/quote]
                      Let me check this out.

                      http://kineticwing.com : Web IDE, QSS Editor
                      http://speedovation.com : Development Lab

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