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QtWS25 Last Chance

QTabWidget change memory leak

Scheduled Pinned Locked Moved Unsolved General and Desktop
qtabwidgetqtableviewmemorymemory leakcurrent tab
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  • J Offline
    J Offline
    Joe von Habsburg
    wrote on last edited by
    #1

    I use QTabWidget. Each tab is a container for some classes. Every class created in constructer.

    MainWindow{
       class1 = Class1(ui->tab1, ...);
       class2 = Class2(ui->tab2, ...);
    }
    

    ui->tab1 and ui->tab2 work as constainer. I create some widgets in Class1 and Class2 and they use tab1 and tab2 as parent.

    When I change QTabWidget current tab, there will memory leak.

    What is the reason ? I do not create or do something. I just click the tab name.

    Christian EhrlicherC 1 Reply Last reply
    0
    • J Joe von Habsburg

      I use QTabWidget. Each tab is a container for some classes. Every class created in constructer.

      MainWindow{
         class1 = Class1(ui->tab1, ...);
         class2 = Class2(ui->tab2, ...);
      }
      

      ui->tab1 and ui->tab2 work as constainer. I create some widgets in Class1 and Class2 and they use tab1 and tab2 as parent.

      When I change QTabWidget current tab, there will memory leak.

      What is the reason ? I do not create or do something. I just click the tab name.

      Christian EhrlicherC Offline
      Christian EhrlicherC Offline
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #2

      There is no leak. How do you measure? Please provide a minimal, compileable example of the problem.

      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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