QtCS2024 Qt on Windows

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Revision as of 06:38, 10 September 2024 by Wladimir Leuschner (talk | contribs) (Added presentation)
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Session Summary

Qt on Windows.pdf

The native look of UI elements have changed their appearance starting with Windows 11. Since Qt 6.7 the UI changes were incoorperated into QtWidgets with a new QWindows11Style. This presentation will give a brief introduction into the style and about recent developments with a glimpse on what comes next for Qt on Windows.

  • Windows 11 Style for QtWidgets
  • Custom Titlebars
  • Refactoring COM to winRT
  • Windows on ARM
  • Transparency effects
  • Windows packaging
  • .Net with Qt
  • Windows App SDK integration

Session Owners

Wladimir Leuschner (wladimir.leuschner@qt.io)

Notes

Qt's WinUI3 style

  • Qt couldn't use WinUI3 natively. => Uses XAML to generate pixmaps
  • Uses more colors
  • More rounded corners => relies on transparency
  • We support Light and Dark mode

Future

  • Custom Titlebars
  • Refactor COM to winrt ?
  • Bluetooth
  • Support Windows on Arm (WoA)
  • Support the ARM emulation layer
  • transparency effects
  • Add support for MSIX packaging
  • Add support MS Store
  • .net with Qt
  • Prototype for adding Qt to a WPF application
  • Windows App SDK support
  • Some challenges with cmake

Various feedback

  • Use accelerated APIs instead of GDI?
  • Investigate synchnization of Qt and windows (to avoid potential flickering)
  • API to configure default sizes of UI elements of WinUI3 (to be more touch friendly)?
  • Qt Creator have several issues with using the WinUI3 style.
  • Problem with alpha blending. Each widget must be created as transparent with Qt::WA_TranslucentBackground
  • Check if Qt::FrameLessWindowHint is actually needed.
  • The Affine Transformations Qt Widgets Example with Windows Store deployment (github.com)