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  1. Qt
  2. QTBUG-56591

QWidget::frameGeometry() does not match WM_NCCALCSIZE

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

      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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            kleint Friedemann Kleint
            celandre dzimiwine celandre
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