How to change the size of a QComboBox's QScrollBar?

Question

I\'m using a QComboBox with some items to the point that, when the widget that shows all available items in the QComboBox appears, only some of the items are visible with th

Answer 1

The scroll bar isn't a member of the QComboBox class, it's a member of the underlying QAbstractItemView. Try something like the following (pseudo-code):

QListView* abby = new QListView();
QWidgetList list = abby->scrollBarWidgets(Qt::AlignRight);
for (auto itr = list.begin(); itr != list.end(); itr++)
{
    (*itr)->setMinimumWidth(100);
}
QComboBox combo;
combo.setView(abby);

The scrollbarwidgets returns a widget list of the scroll bars for that alignment. You can then set the properties on the scroll bar pointers.

Answer 2

1. Get the combobox's QAbstractItemView via view()

2. That class inherits from QAbstractScrollArea, thus inherits the verticalScrollBar method

e.g.

QAbstractItemView *qv = combobox.view();
QScrollBar *scrollbar = qv->verticalScrollBar();
// Adjust size via setStyleSheet or hint/width