Checkable Qtreeview.

[BinuJanardhanan]

How ca I implement a checkable treeview?

[VRonin]

Just attach a model with the Qt::ItemIsUserCheckable flag set for the indexes you want to be checkable

[BinuJanardhanan]

@VRonin could you please show me some example ?

[VRonin]

#include <QApplication>
#include <QTreeWidget>

int main(int argc, char *argv[])
{

    QApplication app(argc,argv);
    QTreeWidget w;
    auto item1 = new QTreeWidgetItem(QStringList("0,0"));
    item1->setFlags(item1->flags() | Qt::ItemIsUserCheckable);
    item1->setData(0,Qt::CheckStateRole,Qt::Unchecked);
    w.addTopLevelItem(item1);
    auto item2 = new QTreeWidgetItem(QStringList("1,0"));
    item2->setFlags(item2->flags() | Qt::ItemIsUserCheckable);
    item1->setData(0,Qt::CheckStateRole,Qt::Unchecked);
    w.addTopLevelItem(item2);
    w.show();
    return app.exec();
}

I use QTreeWidget (which derives from QTreeView) for convenience here but you can use whatever combination of model/view you prefer