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  4. Qt widgets do not update on touch screen in full screen mode

Qt widgets do not update on touch screen in full screen mode

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  • JoeCFDJ Offline
    JoeCFDJ Offline
    JoeCFD
    wrote on last edited by
    #1

    If main window size is changed to whatever value, all widgets on the main window update properly. However, in full screen mode some of them do not update properly. I even added timer to repaint them. No help. This happens only on touch screen. No issue on normal screen. This is on Ubuntu 18.04.3 LTS with Qt 5.9.5.

    JoeCFDJ 1 Reply Last reply
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    • JoeCFDJ Offline
      JoeCFDJ Offline
      JoeCFD
      wrote on last edited by
      #2
      This post is deleted!
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      • JoeCFDJ JoeCFD

        If main window size is changed to whatever value, all widgets on the main window update properly. However, in full screen mode some of them do not update properly. I even added timer to repaint them. No help. This happens only on touch screen. No issue on normal screen. This is on Ubuntu 18.04.3 LTS with Qt 5.9.5.

        JoeCFDJ Offline
        JoeCFDJ Offline
        JoeCFD
        wrote on last edited by
        #3

        @JoeCFD Any help?

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        • J.HilkJ Offline
          J.HilkJ Offline
          J.Hilk
          Moderators
          wrote on last edited by
          #4

          Hi, have you tried this with the newest 5.9 LTS version? which is 5.9.8 IIRC

          Also this can be a driver issue, have you tried a different touch display (vendor)


          Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


          Q: What's that?
          A: It's blue light.
          Q: What does it do?
          A: It turns blue.

          JoeCFDJ 1 Reply Last reply
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          • J.HilkJ J.Hilk

            Hi, have you tried this with the newest 5.9 LTS version? which is 5.9.8 IIRC

            Also this can be a driver issue, have you tried a different touch display (vendor)

            JoeCFDJ Offline
            JoeCFDJ Offline
            JoeCFD
            wrote on last edited by
            #5

            @J-Hilk said in Qt widgets do not update on touch screen in full screen mode:

            5.9.8 IIRC

            Thank you for your reply. No, I have not tried 5.9.8 IIRC. I will check it out. Unluckily, I have only two types of touch screens(small and big ones). On the small one, everything is fine. The driver for the big one is the latest which has been reinstalled.

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