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  1. Qt
  2. QTBUG-98997

Windows and dialogs flash white before painting content on shown

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P3: Somewhat important
    • Resolution: Unresolved
    • Affects Version/s: 5.12.12, 5.15.2, 6.2.1
    • Fix Version/s: None
    • Component/s: QPA: Windows
    • Labels:
      None
    • Platform/s:
      Windows

      Description

      When a Qt window is shown, it tends to show up with a white client area for a short time before the actual widgets can be painted on it. This can cause eye strain and other adverse effects, especially when a dark theme is used or when in low light environment.

      This was reported to Krita (https://bugs.kde.org/show_bug.cgi?id=445968), Shotcut (https://github.com/mltframework/shotcut/issues/1168) and Sandboxie (https://github.com/sandboxie-plus/Sandboxie/issues/1231) by an end user. It can also be observed on the latest Qt Creator 6.0.0 (Built on Dec 1 2021 16:19:37), when opening Qt Creator, opening the Options and other dialogs. (Tested on Windows 10 build 19041, with a dark theme set in Qt Creator to make it more noticeable.)

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            People

            Assignee:
            owolff Oliver Wolff
            Reporter:
            alvinhochun Alvin Wong
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              Dates

              Created:
              Updated:

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