void MainWindow::createItems(){ treeWidget = new QTreeWidget; QTreeWidgetItem *firstItem = new QTreeWidgetItem(treeWidget); firstItem->setText(0, "first"); QTreeWidgetItem *secondItem = new QTreeWidgetItem(treeWidget); secondItem->setText(0, "second"); QTreeWidgetItem *thirdItem = new QTreeWidgetItem(treeWidget); thirdItem->setText(0, "third");}
void MainWindow::changeText(){ treeWidget->itemAt(0,0)->setText(0, "first change"); treeWidget->itemAt(0,1)->setText(0, "second change") treeWidget->itemAt(0,2)->setText(0, "third change");}
treeWidget->itemBelow(treeWidget->itemAt(0,0))->setText("second change");