QListWidget、QTableWidget、QTreeWidget的 简单用法

共同点.png

#include <QApplication>
#include <QDebug>
#include <QListWidget>
#include <QTableWidget>
int main(int argc,char **argv)
{
    QApplication app(argc,argv);
    QListWidget listWidget;

    //一种添加项目的简单方法
    new QListWidgetItem("a",&listWidget);
    new QListWidgetItem("c",&listWidget);

    //添加项目的另一只种方法，这样可以进行各种设置
    QListWidgetItem *listWidgetItem= new QListWidgetItem;
    listWidgetItem ->setText("b");
    listWidgetItem ->setIcon(QIcon("hehua.jpg"));
    listWidgetItem ->setToolTip("this is b");
    listWidget.insertItem(1,listWidgetItem);

    //设置Item排序为倒序
    listWidget.sortItems(Qt::DescendingOrder);
    listWidget.show();
    return app.exec();
}

 QTreeWidget treeWidget;
    //必须设置列数
    treeWidget.setColumnCount(2);
    //设置表头
    QStringList headers;
    headers << "name" << "year";
    treeWidget.setHeaderLabels(headers);
    //添加项目
    QTreeWidgetItem *grade1 = new QTreeWidgetItem(&treeWidget);
    grade1->setText(0,"Grade1");
    QTreeWidgetItem *student = new QTreeWidgetItem(grade1);
    student->setText(0,"tom");
    student->setText(1,"1988");
    QTreeWidgetItem *student2 = new QTreeWidgetItem(grade1);
    student2->setText(0,"jerry");
    student2->setText(1,"1987");
    QTreeWidgetItem *grade2 = new QTreeWidgetItem(grade1);
    grade2->setText(0,"Grade2");

    QTreeWidgetItem *student3 = new QTreeWidgetItem;
    grade2->addChild(student3);
    student3->setText(0,"lilei");
    student3->setText(1,"1990");

    treeWidget.show();

    /****************************/
    //创建表格部件，同时指定行数和列数
    QTableWidget tableWidget(3,2);
    //创建表哥项目，并插入到指定单元
    QTableWidgetItem *tableWidgetItem = new QTableWidgetItem("qt");
    tableWidget.setItem(1,1,tableWidgetItem);

    //创建表格项目，并将他们作为表头
    QTableWidgetItem *headerV = new QTableWidgetItem("first");
    tableWidget.setVerticalHeaderItem(0,headerV);
    QTableWidgetItem *headerH = new QTableWidgetItem("ID");
    tableWidget.setHorizontalHeaderItem(0,headerH);

    tableWidget.show();
    return app.exec();
}

listWidget.png

treeWiget.png

tableWidget.png