QTreeView采用层级结构显示层级数据和层级排列

/*****TreeView节点排序/

//判断是否存在子节点
if(m_TreestandardModel->item(0,0)->hasChildren())
{
QStandardItem *model = m_pTreeStandardModel->item(0,0)->child(0,0);
int modelNum = model->rowCount();
for(int i=0;i<modelNum;i++)
{
QStandardItem *proItem = model->child(i);
proItem->sortChildren(0,Qt::AscendingOrder);//对子节点进行排序操作
}
}
/*************创建多级树结构/
QStandardItemModel *m_pTreeStandardModel = nullptr;
QStandardItem *m_pItemRoot = nullptr;
QStandardItem *m_pEtheMet = nullptr;
void DigitalPlatform::cr