QComboBox highlighting

BjornW

Hi!

I'm having problems using QComboBox (Qt.4.6).

Each item has a (colored) icon and text. This works fine. However, when I highlight an item by moving the mouse over it, highlight color gets applied also to the icon in the list. When an icon is yellow it gets highlighted via a blue transparent layer to green which is confusing because we also have green icons in the list. I would like to disable higlighting of the icon portion of the dropdown. Is that possible?

//Björn

VRonin

Yes but it might need a bit of messing around.
That's just a listview you can access via comboBox->view() you have to set a delegate to it to get what you want.

On top of my head I'd subclass QStyledItemDelegate, reimplement paint copying it from the original and just add:

opt.text.clear();
opt.state &= ~QStyle::State_Selected;
 style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, widget);

at the end. This might mess up if you also have checkboxes but I assume it's not the case

BjornW

Wouldn't that disable highlighting for the text also?

VRonin

yeah, fair point, you'll probably need to set the background brush to Qt::transparent as well

BjornW

m_icon.addPixmap(greenPixmap, QIcon::Normal);
m_icon.addPixmap(greenPixmap, QIcon::Selected);

This seemes to work!