QTreeWidget
TreeWidgetItem
item->setCheckState(0, Qt::Checked);
QListWidgetItem *item = new QListWidgetItem;item->setData(Qt::DisplayRole, "text");item->setData(Qt::CheckStateRole, Qt::Checked);ui->listWidget->addItem(item);
QListWisget* widget = new QListWidget;QListWidget* widget = new QListWidget(this);QListWidget* widget = new QListWidget();
class Class1{Class1(){};~Class1();}Class1 n1;Class1* n1 = new Class1();
QListWisget* widget = new QListWidget;QListWidget* widget = new QListWidget();