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  1. Qt
  2. QTBUG-106583

Windows and dialogs flashing white

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    • Windows
    • 2991c66b75 (qt/qtbase/dev) 2991c66b75 (qt/tqtc-qtbase/dev) 3ce2e00891 (qt/qtbase/6.4) 3ce2e00891 (qt/tqtc-qtbase/6.4)

      "When a window is shown, it always seems to be showing up as a white window for a while on Windows. This is quite annoying especially on dark themes.

      Basically just this reproduces the issue:

      import QtQuick.Window 2.15
Window {
    visible: true
    color: "black"
}

      It is not an issue in Qt 5.15 with ANGLE, but it is in Qt 6 with Direct3D backend. Here are results per software backend:

      backend result
      5.15.10 - desktop OpenGL flashes
      5.15.10 - ANGLE no flashing
      5.15.10 - opengl32sw.dll no flashing
      6.4.0-b4 - Direct3D 11 flashes
      6.4.0-b4 - Vulkan flashes
      6.4.0-b4 - OpenGL flashes
      6.4.0-b4 - Software no flashing

        1. qtbug106583.zip
          2 kB
          Joni Poikelin
        For Gerrit Dashboard: QTBUG-106583
        # Subject Branch Project Status CR V
        559064,3 Windows: fire an expose event when receiving WM_ERASEBKGND dev qt/qtbase Status: NEW 0 -1

            santhoshkumar Santhosh Kumar Selvaraj
            poikelin Joni Poikelin
            Votes:
            1 Vote for this issue
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            7 Start watching this issue

              Created:
              Updated:

                There is 1 open Gerrit change