#include <QtGui/QApplication>
#include <QtGui/QTreeWidget>

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

	// create a tree widget with appropriate properties
	QTreeWidget w;
	w.setSelectionBehavior(QAbstractItemView::SelectRows);
	w.setSelectionMode(QAbstractItemView::ExtendedSelection);
	w.setAllColumnsShowFocus(false);
	w.setRootIsDecorated(false);

	// add some columns and rows to the tree widget
	int columns = 100;
	w.setColumnCount(columns);
	QStringList labels;
	for (int j = 0; j < columns; ++j)
		labels << QString("%1").arg(j);
	w.setHeaderLabels(labels);
	int rows = 100;
	for (int i = 0; i < rows; ++i) {
		QStringList row;
		for (int j = 0; j < columns; ++j)
			row << QString("%1.%2").arg(i).arg(j);
		w.addTopLevelItem(new QTreeWidgetItem(row));
	}

	w.show();
	return a.exec();
}