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Run your Qt 6 apps on Windows 7/8
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README.md

This is Qt 6.6.3 backport that runs on Windows 7 (what?). The repository contains patched source files from the qtbase module. Approach is based on this forum thread but better: many improvements amongst important fallbacks to default Qt 6 behaviour when running on newer Windows.

You can use our prebuild binaries (we used Visual C++ 2019 with OpenSSL 3.0.13 statically linked, see compile_win.pl script) or compile Qt yourself using a compiler and build options you need.

Known issues:

  • QRhi using DirectX 11/12 is not ported
  • setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Round) is recommended

Qt 6.6 designer running on Windows 7:

sshot-533

License

The repository shares Qt Community Edition terms which imply Open-Source terms and conditions (GPL and LGPL).