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Documentation for QT_QPA_* environment variables

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  • S Offline
    S Offline
    Saswati Swami
    wrote on last edited by
    #1

    Hello,
    Where can I get the complete documentation for the environment variables starting with QT_QPA_* ? I need to know the entire list of extra parameters that are supported by these variables and the meaning of each such extra parameter.
    Example : Here,
    QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/event1:rotate=180
    has been defined with 2 extra parameters. So, what is the entire set of such extra parameters that can be set using QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS ?
    Thanks
    -Saswati Swami

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      I think you are looking for this page.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • S Offline
        S Offline
        Saswati Swami
        wrote on last edited by
        #3

        Hi SGaist,

        Thank you very much.
        Yes, I have been looking for the following 2 pages:
        https://doc.qt.io/qt-5/embedded-linux.html
        https://doc.qt.io/qt-5/inputs-linux-device.html

        I am using the Variscite Dart-6UL which supports only the linuxfb plugin. Need to match the touchscreen coordinates with the widget coordinates.
        Best Regards
        -Saswati Swami

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