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@github-actions github-actions released this 09 Oct 21:43
v3.12.2
e499639
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Small efficiency and API fixes, found while reviewing 3.11.2 for Greenshot.

Added

  • ToForegroundAsync(cancellationToken): the token is checked at the start and while waiting for a minimized window to restore (OperationCanceledException). It still returns a ValueTask, most calls complete without waiting or allocating. The wait is measured with a Stopwatch instead of DateTime.UtcNow. After a wait the foreground switch runs on a thread-pool thread (as before), AttachThreadInput works from there.

Changed

  • IsVisibleApplicationWindow and IsVisiblePopup check cheapest first: IsWindowVisible, then the class name of the ignored classes (GetClassName), then the cloak check (DwmGetWindowAttribute). Most top-level windows are invisible, so an enumeration no longer asks the class name of every top-level window, only of the visible ones. The cloak check was already only made for windows with WS_VISIBLE, it is now also skipped for visible windows with an ignored class (e.g. Progman). The cached IsVisible keeps its meaning (visible and not cloaked).
  • GetParent uses the style of a cached WindowInfo instead of reading GWL_STYLE again (unless forceUpdate); IsVisibleApplicationWindow and IsVisiblePopup read the info right before.
  • User32Api.GetText and GetInternalText read captions up to 255 characters into a buffer on the stack, only longer captions allocate a buffer. The full length is still supported.
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