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QT android app on a dual display



  • Hello,

    I'm working on a dual display system on ARM-A15 on Android 8.0 and above, which has one LCD and HDMI connected.
    So, I want my whole android display to run on LCD and the applications on the HDMI.
    But my QT android app, takes both the display when running.
    Is there a way to enable presentation mode for QT app so that it runs only on HDMI?


  • Lifetime Qt Champion

    Hi,

    That's more likely a question for the Android folks.

    You should at least add what device you are running on as well as versions of Android.



  • @SGaist
    thnaks for the reply. So I'm running it on a TI board with ARM A15. So my android and so qt app would run on ARM-A15 on Android 8.0 and above.
    Though i've no idea but could it be achieved with some config changes in qt Qpa?

    Also, I found out this way of looking for no. of screens:
    QDesktopWidget *widget = QApplication::desktop();
    qDebug() << "No.of screens:" << widget->screenCount();

    it shows only 1 screen, though both lcd and hdmi are connected.


  • Lifetime Qt Champion

    Does the desktop widget geometry cover both screens ?



  • @SGaist said in QT android app on a dual display:

    the desktop widget geometry cover both screens ?

    I checked it with qDebug() << "Geometry of screens:" << widget->screenGeometry();
    It gives output as geometry size of one only screen which is primary display.


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