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  1. Qt
  2. QTBUG-56591

QWidget::frameGeometry() does not match WM_NCCALCSIZE

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Details

    • Bug
    • Resolution: Done
    • Not Evaluated
    • 5.9.0 Alpha
    • 5.6.1
    • QPA: Windows
    • None
    • Windows 10
    • c9e1cf516fdce567e54b5d5f4ea9d44164b3e28c (qtbase/dev, 20.,11.2016, 5.9)

    Description

      I am implementing a custom window decoration for a project on Windows 10 by handling WM_NCCALCSIZE (and WM_NCPAINT, WM_NCHITTEST, ..) message. The custom border and caption sizes I return upon WM_NCCALCSIZE never match the values returned by QWidget::frameGeometry(). Looking into Qt code, the problem is because QWidget::frameGeometry() uses AdjustWindowRectEx().

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          duplicates

          Suggestion - Public suggestions QTBUG-2562 Use WM_NCCALCSIZE when drawing window frames on Windows.

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          For Gerrit Dashboard: QTBUG-56591
          # Subject Branch Project Status CR V
          176621,4 Windows QPA: Reimplement calculation of window frames dev qt/qtbase Status: MERGED -2 0

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              kleint Friedemann Kleint
              celandre dzimiwine celandre
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              Dates

                Created:
                Updated:
                Resolved:

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