QTreeWidgetItem和QTreeWidgetItemIterator

1、{
ui->treeWidget->setHeaderHidden(true);
ui->treeWidget->clear();
QTreeWidgetItem *imageItem1 = new QTreeWidgetItem(ui->treeWidget, QStringList(QString("程序")));
imageItem1->setIcon(0, QIcon("picture/ProgramIcon/ParentFile.png"));
AddQTreeWidgetItemChild(imageItem1, "指令程序", QIcon("picture/ProgramIcon/File.png"), 1)->setCheckState(0, Qt::Unchecked);

QTreeWidgetItem *imageItem2 = new QTreeWidgetItem(ui->treeWidget, QStringList(QString("参数")));
imageItem2->setIcon(0, QIcon("picture/ProgramIcon/ParentFile.png"));
AddQTreeWidgetItemChild(imageItem2, "PLC/网络/远程口令", QIcon("picture/ProgramIcon/File.png"), 2)->setCheckState(0, Qt::Unchecked);

QTreeWidgetItem *imageItem3 = new QTreeWidgetItem(ui->treeWidget, QStringList(QString("软元件内容")));
imageItem3->setIcon(0, QIcon("picture/ProgramIcon/ParentFile.png"));
AddQTreeWidgetItemChild(imageItem3, "软元件数据", QIcon("picture/ProgramIcon/File.png"), 3)->setCheckState(0, Qt::Unchecked);

//connect(ui->treeWidget, SIGNAL(itemPressed(QTreeWidgetItem*, int)), this, SLOT(slotItemPressed(QTreeWidgetItem*, int)));
ui->treeWidget->expandAll();
}

2、

QTreeWidgetItemIterator it(ui->treeWidget);
while (*it)
{
if ((*it)->childCount() > 0)
{
for (int i = 0; i < (*it)->childCount(); i++)
{
int iType = (*it)->child(i)->type();
switch (iType)
{
case 0:

break;
case 1:
m_bPrg = (*it)->child(i)->checkState(0);
break;
case 2:
m_bParam = (*it)->child(i)->checkState(0);
break;
case 3:
m_bSoftElem = (*it)->child(i)->checkState(0);
break;
}
}
}
++it;
}