QListWidget删除Item及itemWidget

void Tool::clearListWidget(QListWidget *listWidget)
{
	while (0 != listWidget->count())
	{
		QListWidgetItem *item = listWidget->item(0);
		QWidget *widget = listWidget->itemWidget(item);
		if (nullptr != widget)
		{
			listWidget->removeItemWidget(item);
			widget->deleteLater();
		}

		item = listWidget->takeItem(0);
		delete item;
		item = nullptr;
	}
}