Hello all,
I'm trying to get the down arrow of a QComboBox to be wider than the
default. I've tried lots of different ideas and none are working as
expected. I'm using the Fusion style and Qt5.2. If possible, I'd like to
keep having the style draw everything and not have to redo all the
painting myself.
The best I've come across is subclassing QProxyStyle and reimplementing
subControlRect() for the ComboBoxArrow as follows. This almost works, but
when the ComboBox is editable, then the lineEdit doesn't change size and
overdraws the down arrow button (maybe a bug in the style?). I've tried
playing with different features of the style and none that I've found are
able to control this parameter.
QRect subControlRect(QStyle::ComplexControl cc, const QStyleOptionComplex
*option, QStyle::SubControl sc, const QWidget *widget) const
{
if(cc == CC_ComboBox && sc == SC_ComboBoxArrow)
return(QRect(widget->width()-widget->height(),0,widget->height(),
widget->height()));
return QProxyStyle::subControlRect(cc, option, sc, widget);
}
I also tried using a style sheet as follows, but this changes the image,
but not the width of the down-arrow for some reason:
QComboBox::down-arrow {width:60px; height:60px; image: url(./test.png);}
Thanks for any ideas!
Josh
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