[Windows] Verify: hidden title bar frame, border and maximize details #76

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1. lijy91

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   bugSomething isn't workingSomething isn't working

   on Sep 21, 2026
2. lijy91 commented on Oct 7, 2026

   

   lijy91

   on Oct 7, 2026

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   Replayed with the real nativeapi Flutter Window API in a real Flutter Windows app (Windows 11 build 26200, Flutter 3.47.6 debug): tools/gui/flutter_window_reports_test.ps1 builds the fixture tools/gui/window_reports_flutter.dart against the workspace's Dart packages, paints solid colours, and measures native geometry, styles, DWM caption buttons, pixels and frame-by-frame samples. No keyboard input; the only clicks are owner-guarded ones on the app's own window. The suite passes repeatedly on core 9d6b50d (workspace libnativeapi/nativeapi@2894880).

   • #554 / #450 — with the title bar hidden, a maximized window's content is exactly the work area: the taskbar stays uncovered and there is no gap; the bottom bar reaches the taskbar.
   • #378 — in full screen the content covers the monitor exactly; no padding at the corner or the bottom.
   • #397 — leaving full screen: the restored window's top sampled ~200 times through the transition shows only content, no caption.
   • #576 — with a transparent background colour the caption buttons (DWM caption button bounds) and the title are there; a screenshot is saved for the eye.
   • #547 — on Windows 11 the top border is drawn as thick as the side ones (2 px each; the top one is the DWM frame extended into the client area). Windows 10, where the report was mostly seen, was not available — leaving this open for it.