QComboBox roles question

[viulskiez]

Where model/view convention explains this?

noboro was right. You can look into the source, at line 808.

[mentalmushroom]

Thanks, guys. Now it's clear, but how can I change this behavior?

[viulskiez]

I suggest to subclass QStandardItem then set it as item prototype (QStandardItemModel::setItemPrototype).

[norobro]

You could try using a delegate. Something like this:

#include <QtGui>
 
class Delegate : public QStyledItemDelegate
{
    QString displayText(const QVariant &value, const QLocale &locale) const{
        return QString("item %1").arg(value.toString());
    }
};
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QComboBox comboBox;
    comboBox.setEditable(true);
    for (int i = 0; i<5; ++i){
        comboBox.addItem(QString("%1").arg(i));
    }
    comboBox.setItemDelegate(new Delegate);
    comboBox.show();
    return a.exec();
}

#include <QtGui>

class Delegate : public QStyledItemDelegate
{
    QString displayText(const QVariant &value, const QLocale &locale) const{
        return QString("item %1").arg(value.toString());
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QComboBox comboBox;
    comboBox.setEditable(true);
    for (int i = 0; i<5; ++i){
        comboBox.addItem(QString("%1").arg(i));
    }
    comboBox.setItemDelegate(new Delegate);
    comboBox.show();
    return a.exec();
}

To copy to clipboard, switch view to plain text mode