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Error because of thread ..

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  • B Offline
    B Offline
    BibekKumar
    wrote on last edited by
    #1

    I am using the QLineedit in my application (lineedit->setEnabled(false)).. but when in my application that QLineedit is accessed , it shows its being used by some other thread , where as the current thread is something different ..

    The error displays in a dialog box having 3 button (abort, retry, ignore )when i am debugging with the following text .

    **ASSERT failure in QCoreApplication::sendevent:"cannot send events to objects owned by a different thread . Current thread 1c24db20 .Receiver 'Lineedit'(oftype 'QLineedit') was created in thread 90c2a18",file kernel\qcoreapplication.cpp,line330 **

    can anyone help for resolving this issue ??

    Thankx in adv .

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    • G Offline
      G Offline
      giesbert
      wrote on last edited by
      #2

      This can't be solved by this little information.
      Typically this happens when you have multiple threads in the game.

      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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      • B Offline
        B Offline
        BibekKumar
        wrote on last edited by
        #3

        so what information you need ?

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        • L Offline
          L Offline
          lgeyer
          wrote on last edited by
          #4

          Make sure you don't access any GUI elements from any other thread than the GUI thread (main thread); you are not allowed to do that. If you need to manipulate GUI elements from secondary threads you will have to use (asynchronous) signals and slots (as well for QLineEdit::setEnabled()).

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          • R Offline
            R Offline
            raaghuu
            wrote on last edited by
            #5

            Are you using threads in your app?

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

              "you will have to use (asynchronous) signals and slots"

              --> Use Qt::QueuedConnection as the Qt::ConnectionType parameter of QObject::connect(...) parameter, to detach the threads.

              This, Jen, is the internet.

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