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  1. Qt
  2. QTBUG-104511

Handling of exclusive fullscreen windows

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    Details

    • Type: User Story
    • Status: Open
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: GUI: Window management
    • Labels:
      None
    • Platform/s:
      macOS, Windows

      Description

      Based on feedback in https://codereview.qt-project.org/c/qt/qtbase/+/412497 it's clear that we need to investigate how Qt behaves when the application is using full screen windows, and expect either fullscreen exclusive access (for performance), or not (for showing dialogs/popups on top of the fullscreen window).

      This applies primarily to Windows OpenGL-accelerated windows (WS_BORDER) but also potentially to macOS (https://developer.apple.com/documentation/appkit/nswindowcollectionbehavior?language=objc)

      Existing APIs

      Qt 5

      • QWindowsWindowFunctions::setHasBorderInFullScreen(QWindow *window, bool border)
      • QWindowsWindowFunctions::setHasBorderInFullScreenDefault(bool border)

      Qt 6

      • QNativeInterface::Private::QWindowsWindow::setHasBorderInFullScreen(bool border)
        (no way of setting a default)

      Relevant Changes

        Attachments

          Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-47247 Windows/Desktop GL: Flicker when creating another top level window on a full screen GL window

          • P4: Low - Would be nice to fix, but it's not very important.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-41883 Windows: main menu no more active when in fullscreen with qopenglwidget

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-41309 QOpenGLWidget and QOpenGLWindow problems under Fullscreen

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-42410 QtQuick fullscreen Window buggy alt-tab and screenshot behaviour

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-71855 Windows: Fullscreen Desktop GL application is in wrong orientation when a monitor is in portrait orientation

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-104511
          # Subject Branch Project Status CR V
          412497,6 Make work-around for fullscreen widget w. openGL (Windows) dev qt/qtbase Status: NEW 0 0

            Activity

              People

              Assignee:
              vestbo Tor Arne Vestbø
              Reporter:
              vestbo Tor Arne Vestbø
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                Dates

                Created:
                Updated:

                  Gerrit Reviews