QTreeWidget基础操作代码

#include "widget.h" #include "ui_widget.h" #include <QDebug> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); ui->treeWidget->setColumnCount(4); //设置宽度 ui->treeWidget->setColumnWidth(0,150); QStringList headers; headers.append("Filename"); headers.append("Last Modified"); headers.append("Type"); headers.append("Size"); ui->treeWidget->setHeaderLabels(headers); QIcon icon_folder(":/folder.png"); QIcon icon_file(":/file.png"); this->AddItem("Qt5开发实例.txt","2016-01-15","text file",8512,icon_file); this->AddItem("MFC开发实例.txt","2010-04-27","text file",4526,icon_file); this->AddItem("Java开发实例.txt","2011-12-7","text file",1526,icon_file); this->AddItem("C#开发实例.txt","2009-08-5","text file",7895,icon_file); QTreeWidgetItem* item=AddItem("video","2018-03-25","folder",0,icon_folder); AddItem("Qt管理系统开发视频.mp4","2018-03-25","mp4 file",4512,icon_file,item); //右键弹出菜单-右键菜单支持 ui->treeWidget->setContextMenuPolicy(Qt::CustomContextMenu); connect(ui->treeWidget,SIGNAL(customContextMenuRequested(QPoint)),this,SLOT(OnWidgetContextMeun(QPoint))); connect(ui->actionAdd,SIGNAL(triggered(bool)),this,SLOT(OnMenuAdd())); connect(ui->actionRemove,SIGNAL(triggered(bool)),this,SLOT(OnMenuRemove())); } int Widget::OnWidgetContextMeun(const QPoint &pt){ //当前选中项 QTreeWidgetItem *selected=ui->treeWidget->itemAt(pt); //qDebug()<<row; QMenu menu; menu.addAction(ui->actionAdd); if(selected){ menu.addAction(ui->actionRemove); } //显示菜单 menu.exec(ui->treeWidget->mapToGlobal(pt)); return 0; } int Widget::OnMenuAdd(){ QString msg=ui->treeWidget->currentItem()->text(0); //获取当前行的数据 //qDebug()<<msg; QMessageBox::information(this,tr("提示"),"当前选中的信息为:"+msg,QMessageBox::Ok); return 0; } int Widget::OnMenuRemove(){ QString msg=ui->treeWidget->currentItem()->text(0); //获取当前行的数据 //qDebug()<<msg; QMessageBox::information(this,tr("提示"),"当前选中的信息为:"+msg,QMessageBox::Ok); return 0; } QTreeWidgetItem* Widget::AddItem(const QString &filename , const QString &last_modified , const QString &type, int size , QIcon icon , QTreeWidgetItem *parent){ QTreeWidgetItem* item=new QTreeWidgetItem(); item->setText(0,filename); item->setIcon(0,icon); item->setText(1,last_modified); item->setText(2,type); item->setText(3,QString::number(size)); if(parent) parent->addChild(item); else ui->treeWidget->addTopLevelItem(item); return item; } Widget::~Widget() { delete ui; }