#include <QApplication>                                                                                                               
#include <QTreeView>
#include <QStandardItemModel>
#include <QStandardItem>

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

    // Test model
    QStandardItemModel model(3, 2);
    model.setHorizontalHeaderLabels({ "Header 1", "Header 2" });
    for (int row = 0; row < 3; ++row) {
        for (int column = 0; column < 2; ++column) {
            model.setItem(row, column, new QStandardItem("Foo"));
        }
    }

    // View with sorting disabled
    QTreeView view;
    view.setWindowTitle("Sorting Disabled");
    view.setModel(&model);
    view.show();
    view.resizeColumnToContents(0);

    // View with sorting enabled
    QTreeView viewWithSorting;
    viewWithSorting.setWindowTitle("Sorting Enabled");
    viewWithSorting.setModel(&model);
    viewWithSorting.setSortingEnabled(true);
    viewWithSorting.show();
    viewWithSorting.resizeColumnToContents(0);

    return app.exec();
}