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  1. Qt
  2. QTBUG-86335

REG: QQuickWidget does not work

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Done
    • Affects Version/s: 6.0.0 Alpha
    • Fix Version/s: 6.0.0 Beta1
    • Component/s: Qt RHI, Quick: Widget
    • Labels:
      None

      Description

      QQuickWidget no longer works in Qt 6. This was ported to RHI at some point (as long as OpenGL was selected as the backend), but has since then regressed.

      I tested with the following code on Linux and Windows (QSG_RHI_BACKEND=opengl), and the content is not displayed on either.

      main.qml (added to resources):

      import QtQuick 2.12
      import QtQuick.Window 2.12
      
      Text {
          visible: true
          width: 640
          height: 480
          text: "foobar"
      }
      

      and

      main.cpp:

      #include <QtGui>
      #include <QtWidgets>
      #include <QtQuickWidgets>
      
      int main(int argc, char *argv[])
      {
          QApplication app(argc, argv);
          QQuickWidget qw(QUrl{"qrc:/main.qml"});
          qw.show();
          return app.exec();
      }
      

      On Linux, the window is completely black and on Windows, the window is completely black. On both platforms, the following error is displayed on the console:

      virtual void QPlatformBackingStore::composeAndFlush(QWindow*, const QRegion&, const QPoint&, QPlatformTextureList*, bool) no opengl support set
      

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              Assignee:
              lagocs Laszlo Agocs
              Reporter:
              esabraha Eskil Abrahamsen Blomfeldt
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                Dates

                Created:
                Updated:
                Resolved:

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