On 2023-02-18 13:42, Axel Spoerl via Development wrote:
Hi David, The margin for recognizing a mouse resize is handled by the window manager, hence not controlled by Qt. (...)
That depends if the QDockWidget is using native decorations or not, see [1].
When not using native decos, Qt::FramelessWindowHint is used and resizing is done via QWidgetResizeHandler, which has 4px of margin [2], but I think only inwards, since if the mouse is outside the window won't receive the event. Maybe needs mouse grab.
[1] - https://codebrowser.dev/qt5/qtbase/src/widgets/widgets/qdockwidget.cpp.html#299 [2] - https://codebrowser.dev/qt5/qtbase/src/widgets/widgets/qwidgetresizehandler.cpp.html#_M/RANGE
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