c++ - Set alignment of QGroupBox title -


i try programmatically set alignment of title of qgroupbox. according documentation try in following way:

mainwidget::mainwidget (qwidget * parent)             : qwidget (parent) {     setwindowtitle (tr ("qgropbox title alignment issue") );      qgroupbox * group = new qgroupbox ("group title", this);     qvboxlayout * layouttop = new qvboxlayout ();     layouttop->addwidget (group);     group->setalignment (qt::alignhcenter);     this->setlayout (layouttop); }

but have got unexpected result , title aligned left-hand side of group box.

enter image description here

such behaviour have got environment:

  • debian 9.0 (sid);
  • qt 5.5.1 (installed repository);
  • xmonad de.

enter image description here

the same behaviour have got next environment:

  • ubuntu 15.10;
  • qt 5.4 (installed manually using offline-installer);
  • kde.

but! if use qt installed repository (qt 5.4.2) title aligned centre default. if change align left not changed.

i try find solution google, haven't found similar questions , bad sign , means thing wrong.

so question is: why can't manage alignment of group box title.

it seems in qt 5.5.1 there bug visual styles when qgroupbox title alignment not taken account when title's rect computed: qtbug-49068: qgroupbox title not follow alignment fusion style.

you can download recent version git repository, build , check if bug has been fixed (is has been fusion style: qt commit 139953).

if bug still occurs, think should submit issue qt bugtracker.


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