vs2015+Qt 树形控件使用方法

1、新建一个项目，双击.ui文件，进行UI界面设计，设计结果如下图：

2、在test6.cpp中添加如下代码，具体如下

#include "test6.h"

test6::test6(QWidget *parent)
	: QMainWindow(parent)
{
	ui.setupUi(this);


	ui.treeWidget->setStyle(QStyleFactory::create("windows"));  //设置虚线和伸缩加减号

	ui.treeWidget->clear();    //QTreeWidget清空
	ui.treeWidget->setFrameStyle(QFrame::NoFrame);  //框架样式
	ui.treeWidget->setHeaderLabels(QStringList() << "name" << "ID");
	ui.treeWidget->setColumnCount(2); //tree widget的列数

	//顶层节点设计
	QTreeWidgetItem * liItem = new QTreeWidgetItem(QStringList() << "project");
	ui.treeWidget->addTopLevelItem(liItem);

	//子节点设计
	QStringList heroL1, heroL2, heroL3, heroL4, heroL5, heroL6, heroL7, heroL8, heroL9, heroL10;
	heroL1 << "parameter" << "231";
	heroL2 << "geometry" << "232";
	heroL3 << "network" << "233";
	heroL4 << "aggregate" << "234";
	heroL5 << "MaterialScience" << "235";
	heroL6 << "attribute" << "236";
	heroL7 << "load" << "237";
	heroL8 << "constraint" << "238";
	heroL9 << "solve" << "239";
	heroL10 << "result" << "240";


	QTreeWidgetItem * li1 = new QTreeWidgetItem(heroL1);
	liItem->addChild(li1);
	QTreeWidgetItem * li2 = new QTreeWidgetItem(heroL2);
	liItem->addChild(li2);
	QTreeWidgetItem * li3 = new QTreeWidgetItem(heroL3);
	liItem->addChild(li3);
	QTreeWidgetItem * li4 = new QTreeWidgetItem(heroL4);
	liItem->addChild(li4);
	QTreeWidgetItem * li5 = new QTreeWidgetItem(heroL5);
	liItem->addChild(li5);
	QTreeWidgetItem * li6 = new QTreeWidgetItem(heroL6);
	liItem->addChild(li6);
	QTreeWidgetItem * li7 = new QTreeWidgetItem(heroL7);
	liItem->addChild(li7);

	QTreeWidgetItem * li8 = new QTreeWidgetItem(heroL8);
	liItem->addChild(li8);

	QTreeWidgetItem *item1_1_1 = new QTreeWidgetItem(li8, QStringList("1-1-1"));
	li8->addChild(item1_1_1);

	QTreeWidgetItem * li9 = new QTreeWidgetItem(heroL9);
	liItem->addChild(li9);
	QTreeWidgetItem * li10 = new QTreeWidgetItem(heroL10);
	liItem->addChild(li10);
}

 3、在test6.h中包含几个头文件，具体代码如下：

#pragma once
#include <QTreeWidget>
#include <QTreeWidgetItem>
#include <QMessageBox>
#include <QDebug>
#include <QStyleFactory>

#include <QtWidgets/QMainWindow>
#include "ui_test6.h"

class test6 : public QMainWindow
{
	Q_OBJECT

public:
	test6(QWidget *parent = Q_NULLPTR);

private:
	Ui::test6Class ui;
};

4、运行结果如下图：