<![CDATA[QGroupBox not expanding in QTabWidget]]>Hi,
I have a QTabWidget in which I add a tab and as the widget I add an QGroupBox. I now have the issue that the GroupBox is not extending fully in the tab. I tried to manully set the sizePolicy to expand horizontaly and stay fixed vertical. But this seemed to change nothing. What am I missing. Why is the QGroupbox not expanding in the layout, for which I used a vertical BoxLayout. In my GroupBox I used a GridLayout for the forms. I am quite new to Qt and I couldn't find out what I am missing. I guess its pretty simple and I just overlooked something.
Below is a sceenshot of my current work.
655480ff-0124-4e7f-b332-0a5cb1fa6fe2-grafik.png

]]>https://forum.qt.io/topic/147694/qgroupbox-not-expanding-in-qtabwidgetRSS for NodeFri, 07 Aug 2026 19:27:10 GMTTue, 08 Aug 2023 19:31:01 GMT60<![CDATA[Reply to QGroupBox not expanding in QTabWidget on Tue, 08 Aug 2023 19:41:49 GMT]]>Hi and welcome to devnet,

Which version of Qt are you using ?
On which platform ?
Can you provide a minimal compilable example that shows your issue ?

]]>https://forum.qt.io/post/768023https://forum.qt.io/post/768023Tue, 08 Aug 2023 19:41:49 GMT<![CDATA[Reply to QGroupBox not expanding in QTabWidget on Tue, 08 Aug 2023 19:39:46 GMT]]>@castn better to show some code.
And Qt version and OS?

]]>https://forum.qt.io/post/768021https://forum.qt.io/post/768021Tue, 08 Aug 2023 19:39:46 GMT