delegate and alternatigRowColors, how to?

[martinn]

I have created my own delegate to be able to have a custom style for my QListWidgetItem's. Now I want to use alternatingRowColors for the QListWidgetItem's but I'm not sure how to change the paint method in my delegate to get alternatigRowColors working. How can I change the background color if the row is alternating?

This is how my code for paint method looks like (a little bit simplified):

void ListDelegate::paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const{
		QRect r = option.rect;
 
		if(option.state & QStyle::State_Selected){
			painter->setBrush(QBrush(Qt::red, Qt::SolidPattern));
			painter->drawRect(r);
		} else {
			painter->setBrush(QBrush(Qt::white, Qt::SolidPattern));
			painter->drawRect(r);
		}
 
		//GET TITLE
		QString title = index.data(Qt::DisplayRole).toString();
 
		//TITLE
		r = option.rect.adjusted(45, 0, -10, -30);
		painter->setFont( QFont( "Arial", 6, QFont::Normal ) );
		painter->drawText(r.left(), r.top(), r.width(), r.height(), Qt::AlignBottom|Qt::AlignLeft, title, &r);
	}

void ListDelegate::paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const{
		QRect r = option.rect;
		
		if(option.state & QStyle::State_Selected){
			painter->setBrush(QBrush(Qt::red, Qt::SolidPattern));
			painter->drawRect(r);
		} else {
			painter->setBrush(QBrush(Qt::white, Qt::SolidPattern));
			painter->drawRect(r);
		}
		
		//GET TITLE
		QString title = index.data(Qt::DisplayRole).toString();
		
		//TITLE
		r = option.rect.adjusted(45, 0, -10, -30);
		painter->setFont( QFont( "Arial", 6, QFont::Normal ) );
		painter->drawText(r.left(), r.top(), r.width(), r.height(), Qt::AlignBottom|Qt::AlignLeft, title, &r);
	}

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[Lykurg]

You can use something like that:

painter->setBrush( (index.row() % 2) ? Qt::white : Qt::green );

painter->setBrush( (index.row() % 2) ? Qt::white : Qt::green );

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[martinn]

Thanks really much for your help!