QTreeWidget增、删、改（双击编辑）、查

 改（双击编辑）

//连接信号和槽
connect(m_ui->userinfoTableWidget,&QTableWidget::itemClicked,
this,&ProfileSelector::getCheckDate);
connect(m_ui->userinfoTableWidget, &QTableWidget::customContextMenuRequested,
this,&ProfileSelector::open_menu);

//双击编辑
void ProfileSelector::treeWidgetOpenEditor(QTreeWidgetItem *item,int col)
{
    m_ui->userinfoTreeWidget->openPersistentEditor(item,col);
    m_myItem=item;
    m_myCol=col;
}
//关闭编辑
void ProfileSelector::treeWidgetCloseEditor()
{
    if(m_myItem!=NULL){
        m_ui->userinfoTreeWidget->closePersistentEditor(m_myItem,m_myCol);
    }
}

增加

QTreeWidgetItem *addItem = new QTreeWidgetItem(m_ui->userinfoTreeWidget);
    addItem->setText(0,"name");
    addItem->setText(1,"sex");
    addItem->setText(2,"age");

删除

 QTreeWidgetItem *items = new QTreeWidgetItem;
    items=m_ui->userinfoTreeWidget->currentItem();
    delete items;

查

    //选中行的数据：
    QString currentName=currenItem->text(0);//第一列数据
    QString currentSex=currentItem->text(1);
    QString currentAge=currentItem->text(2);