Hi David, The margin for recognizing a mouse resize is handled by the window manager, hence not controlled by Qt. Since a QDockWidget is a window of its own and not embedded in a main window, the margins for resize handling are a little smaller than otherwise (at least for Linux, not sure for other OSes). That's why a dock widget is more affected if the window manager uses a thin border margin. Depending on the window manager used, that margin can typically be modified on a theme level. In GTK themes, the property is called "border-right-width" (left, top, bottom respectively). In the Ambiance theme (frequently used used on Ubuntu), the property is set with a distance and defaults to 1. You could increase the margin to 5px by adding / modifying a line in the theme: <distance name="right_width" value="5"/> (left, bottom, top respectively). Cheers Axel
________________________________ Von: Development <development-boun...@qt-project.org> im Auftrag von David C. Partridge <david.partri...@perdrix.co.uk> Gesendet: Samstag, 18. Februar 2023 12:21 An: development@qt-project.org <development@qt-project.org> Betreff: [Development] Resizing borders for dock widgets When a dock widget is undocked (at least when using the “Fusion” style), the resizing border is very small (perhaps only 1 pixel). This means it can the tricky to resize it on hi-res monitors. Can this be changed please? Cheers, David
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