Qt：列表框、表格、树形控件

一、列表框

#include "widget.h"

#include <QApplication>
#include <QListWidget>
#include <QStringList>
#include <QTableWidget>
#include <QTreeWidget>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
QListWidget lw(&w);                                                            
lw.move(100,200);                                                              
lw.resize(100,200);                                                            
                                                                               
lw.addItem("百度");                                                              
lw.addItem(new QListWidgetItem("腾讯"));                                         
  QStringList qstr;                                                            
  qstr << "阿里巴巴" << "字节跳动" ;                                                   
lw.addItems(QStringList() << "阿里巴巴" << "字节跳动");                                
                                                                               
QObject::connect(&lw,&QListWidget::itemDoubleClicked,&lw,&QListWidget::clear); 
    w.show();
    return a.exec();

}

输出：

 

二、表格

#include "widget.h"

#include <QApplication>
#include <QListWidget>
#include <QStringList>
#include <QTableWidget>
#include <QTreeWidget>


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
QTableWidget tw(3,3,&w);
    tw.move(100,100);
    tw.resize(500,400);

    tw.setHorizontalHeaderLabels(QStringList() << "企业" << "网址" << "创始人");

    tw.setItem(0,0,new QTableWidgetItem("百度"));
    tw.setItem(0,1,new QTableWidgetItem("www.baidu.com"));
    tw.setItem(0,2,new QTableWidgetItem("李彦宏"));

    tw.setItem(1,0,new QTableWidgetItem("腾讯"));
    tw.setItem(1,1,new QTableWidgetItem("www.qq.com"));
    tw.setItem(1,2,new QTableWidgetItem("马化腾"));

    tw.setItem(2,0,new QTableWidgetItem("阿里巴巴"));
    tw.setItem(2,1,new QTableWidgetItem("www.1688.com"));
    tw.setItem(2,2,new QTableWidgetItem("马云"));

    tw.setRowCount(tw.rowCount() + 1);

    tw.setItem(3,0,new QTableWidgetItem("字节跳动"));
    tw.setItem(3,1,new QTableWidgetItem("www.bytedance.com"));
    tw.setItem(3,2,new QTableWidgetItem("张一鸣"));

    QObject::connect(&tw,&QTableWidget::cellDoubleClicked,&tw,&QTableWidget::removeRow);

   w.show();
    return a.exec();

}

输出：

 

三、树形控件

#include "widget.h"

#include <QApplication>
#include <QListWidget>
#include <QStringList>
#include <QTableWidget>
#include <QTreeWidget>
tw.move(100,100);
    tw.resize(300,200);

    QTreeWidgetItem topItem(&tw);
    topItem.setText(0,"网址");
    //tw.addTopLevelItem(&topItem);
    QTreeWidgetItem Bd(&topItem,QStringList() << "百度");
    QTreeWidgetItem BdUrl(&Bd,QStringList() << "www.baidu.com");
    QTreeWidgetItem Tx(&topItem,QStringList() << "腾讯");
    QTreeWidgetItem TxUrl(&Tx,QStringList() << "www.qq.com");
   w.show();
    return a.exec();

}

输出：