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Disconnect slot when deleting object

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  • I Offline
    I Offline
    Infinity
    wrote on last edited by
    #1

    Do I have to disconnect the slot of an object, when I delete the object with deleteLater() or will the slot be deleted when I call deleteLater() on the object?

    A 1 Reply Last reply
    0
    • Christian EhrlicherC Online
      Christian EhrlicherC Online
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @Infinity said in Disconnect slot when deleting object:

      will the slot be deleted

      a slot is a function - this can not be deleted. What will be deleted is the connection between the signal and the slot.
      And yes this connection is deleted - anything else would be... hard to maintain.

      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
      Visit the Qt Academy at https://academy.qt.io/catalog

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      • Ashok KumarA Offline
        Ashok KumarA Offline
        Ashok Kumar
        wrote on last edited by Ashok Kumar
        #3

        No u need not disconnect the connect statement. No, the Slot will not be deleted when you delete the object since slot is nothing but a member function of the class. Just the object will be deleted and after the object is deleted the connection will be automatically disconnected.

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        • S Offline
          S Offline
          shashikumar
          wrote on last edited by
          #4

          @Infinity may be you thinking in wrong way because slot is just a function and there is option like disconnect is only for connect statement ,so if you want to stop signal and slot communication then you may use this disconnect

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          • I Infinity

            Do I have to disconnect the slot of an object, when I delete the object with deleteLater() or will the slot be deleted when I call deleteLater() on the object?

            A Offline
            A Offline
            anil_arise
            wrote on last edited by
            #5

            @Infinity this will help you . Disconnect . read carefully.

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            0
            • I Offline
              I Offline
              Infinity
              wrote on last edited by
              #6

              Thank you very much for your answers. Obviously my question was wrong. Of course I meant whether the slot will be disconnected and not deleted. Anyway I figured out from your answers that the slot will be disconnected when the Object is deleted with deleteLater(). Am I correct?

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              0
              • Christian EhrlicherC Online
                Christian EhrlicherC Online
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #7

                @Infinity said in Disconnect slot when deleting object:

                when the Object is deleted with deleteLater(). Am I correct?

                I already answered this in the first post...

                And yes this connection is deleted

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

                I 1 Reply Last reply
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                • Christian EhrlicherC Christian Ehrlicher

                  @Infinity said in Disconnect slot when deleting object:

                  when the Object is deleted with deleteLater(). Am I correct?

                  I already answered this in the first post...

                  And yes this connection is deleted

                  I Offline
                  I Offline
                  Infinity
                  wrote on last edited by
                  #8

                  @Christian-Ehrlicher Yes. Thank you very much. Your answer was very helpful.

                  1 Reply Last reply
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