How to set the background color of part of the text in QTreeWidgetItem?

Question

For example, the text of QTreeWidgetItem is ["Hello world"], is there any way to set the background color of 'Hello'? The method setBackground seems to set the whole column.

Answer 1

Set a custom Widget as default view of your QTreeWidgetItem, its easy with QLabel. This is an example with a QListWidget and QListWidgetItem:

QListWidgetItem* MainWindow::addColoredItem(const QString& name, const QColor& backcolor, const QColor& textcolor) {
    QListWidgetItem* item = new QTreeWidgetItem(this);
    QLabel* label = new QLabel(this);
    label->setStyleSheet(QString("QLabel{background: %1; color %2;}").arg(backColor.name(), textColor.name()));
    ui->listWidget->addItem(item);
    ui->listWidget->setItemWidget(item, widget);
    return item;
}

For QTreeWidgetItem, make the same steps.