Qt QtreeWidget树形结构图表

本例子采用treewidget类：他继承自treeview相对于treeview能简单方便一点。

本例思路：

三个root节点，每个root节点在添加child节点对应在child节点里添加item(项)。

具体看:

QTreeWidgetItem *additem();

void addroot(QTreeWidget *rootwidget,QStringList  list)

////////////////////////////////////////////////////////////////////////////////////////////

#include <QApplication>

#include<QDebug>

#include <QtCore/qglobal.h>

#include<QWidget>

#include<QStandardItemModel>

#include<QTableView>

#include<QHeaderView>

#include<QTreeWidget>

#include<QTreeWidgetItem>
/***************************

 * 添加child节点

 * ****************************/

QTreeWidgetItem *additem()

{

        QTreeWidgetItem *item1=new QTreeWidgetItem;

        item1->setText(0,"yang");

        item1->setText(1,"sen");

        item1->setText(2,"hounan");

        return item1;

}
/*************************

 *

 * 添加root节点

 * ********************************/

void addroot(QTreeWidget *rootwidget,QStringList  list){

    QTreeWidgetItem *widgetitem=new QTreeWidgetItem(rootwidget);

    widgetitem->setText(0,list.at(0));

    widgetitem->setText(1,list.at(1));

    widgetitem->setText(2,list.at(2));

    rootwidget->addTopLevelItem(widgetitem);

    widgetitem->addChild(additem());

    widgetitem->addChild(additem());

    widgetitem->addChild(additem());

}

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

//    QStandardItemModel *model=new QStandardItemModel;

//    QStringList list;

//    list<<"姓名"<<"性别"<<"年龄"<<"手机"<<"地址";

//    model->setHorizontalHeaderLabels(list);

//    model->setRowCount(4);

//    model->setColumnCount(5);

//    model->setItem(0,0,new QStandardItem("yangsen"));

//    //model->removeRows(0,model->rowCount());

//    model->removeRow(0);

//    QTableView *view=new QTableView;

//    view->setModel(model);

//    view->setColumnWidth(2,200);

//    view->verticalHeader()->hide();

//    view->horizontalHeader()->setDefaultAlignment(Qt::AlignCenter);

//    view->show();

    QTreeWidget *treewidget=new QTreeWidget;

    //treewidget->setFixedWidth(300);

    //treewidget->horizontalScrollMode()->setFixedWidth(300);

    treewidget->setColumnWidth(0,90);

    treewidget->setColumnCount(3);

    QStringList list;

    list<<"姓名"<<"年龄"<<"性别";

    treewidget->setHeaderLabels(list);

    QStringList list1;

    list1<<"one"<<"hou"<<"nan";

    QStringList list2;

    list2<<"two"<<"hou"<<"nan";

    QStringList list3;

    list3<<"three"<<"hou"<<"nan";

    addroot(treewidget,list1);

    addroot(treewidget,list2);

    addroot(treewidget,list3);

    treewidget->show();

    return a.exec();

}