C++ Qt开发：Tab与Tree组件实现分页菜单

MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    // 全局配置tabWidget选项卡
    ui->tabWidget->setTabPosition(QTabWidget::North);       // 设置选项卡方位
    ui->tabWidget->setIconSize(QSize(50, 25));              // 设置图标整体大小
    ui->tabWidget->setTabShape(QTabWidget::Triangular);     // 设置选项卡形状
    ui->tabWidget->setMovable(true);                        // 设置选项卡是否可拖动
    ui->tabWidget->usesScrollButtons();                     // 选项卡滚动

    // 设置选项卡1
    ui->tabWidget->setTabText(0,QString("进制转换标签"));           // 设置选项卡文本
    ui->tabWidget->setTabIcon(0,QIcon(":/image/about.ico"));      // 设置选项卡图标
    ui->tabWidget->setTabToolTip(0,QString("SpinBox 与进制转换"));  // 设置鼠标悬停提示

    // 设置选项卡2
    ui->tabWidget->setTabText(1,QString("颜色配置标签"));          // 设置选项卡文本
    ui->tabWidget->setTabIcon(1,QIcon(":/image/file.ico"));      // 设置选项卡图标
    ui->tabWidget->setTabToolTip(1,QString("滑块条的使用"));       // 设置鼠标悬停提示

    // 设置选项卡3
    ui->tabWidget->setTabText(2,QString("系统配置标签"));          // 设置选项卡文本
    ui->tabWidget->setTabIcon(2,QIcon(":/image/lock.ico"));      // 设置选项卡图标
    ui->tabWidget->setTabToolTip(2,QString("圆形组件与数码表"));    // 设置鼠标悬停提示

    // 设置选项卡4
    ui->tabWidget->setTabText(3,QString("文件配置标签"));          // 设置选项卡文本
    ui->tabWidget->setTabIcon(3,QIcon(":/image/lock.ico"));      // 设置选项卡图标
    ui->tabWidget->setTabToolTip(3,QString("文件配置组合"));       // 设置鼠标悬停提示
}

#include <iostream>
#include <QStyleFactory>

MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    ui->treeWidget->clear();
    ui->treeWidget->setColumnCount(1);
    ui->treeWidget->setHeaderHidden(true);

    // 隐藏tabWidget头部
    ui->tabWidget->tabBar()->hide();

    // 为treeWidget增加线条
    ui->treeWidget->setStyle(QStyleFactory::create("windows"));

    // ----------------------------------------------------------
    // 创建 [系统设置] 父节点
    // ----------------------------------------------------------
    QTreeWidgetItem *system_setup = new QTreeWidgetItem(ui->treeWidget,QStringList(QString("系统位置")));
    system_setup->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsAutoTristate);
    system_setup->setIcon(0,QIcon(":/image/lock.ico"));

    // 给父节点添加子节点
    QTreeWidgetItem *system_setup_child_node_1 = new QTreeWidgetItem(system_setup);
    system_setup_child_node_1->setText(0,"修改密码");
    system_setup_child_node_1->setIcon(0,QIcon(":/image/about.ico"));

    QTreeWidgetItem *system_setup_child_node_2 = new QTreeWidgetItem(system_setup);
    system_setup_child_node_2->setText(0,"设置菜单");
    system_setup_child_node_2->setIcon(0,QIcon(":/image/about.ico"));

    // ----------------------------------------------------------
    // 创建 [页面布局] 父节点
    // ----------------------------------------------------------
    QTreeWidgetItem *page_layout = new QTreeWidgetItem(ui->treeWidget,QStringList(QString("页面布局")));
    page_layout->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsAutoTristate);
    page_layout->setIcon(0,QIcon(":/image/lock.ico"));

    QTreeWidgetItem *page_layout_clild_1 = new QTreeWidgetItem(page_layout);
    page_layout_clild_1->setText(0,"页面配置");
    page_layout_clild_1->setIcon(0,QIcon(":/image/about.ico"));

    QTreeWidgetItem *page_layout_clild_2 = new QTreeWidgetItem(page_layout);
    page_layout_clild_2->setText(0,"页面参数");
    page_layout_clild_2->setIcon(0,QIcon(":/image/about.ico"));

    ui->treeWidget->expandAll();
}

void MainWindow::on_treeWidget_itemDoubleClicked(QTreeWidgetItem *item, int column)
{
    QString str = item->text(column);

     if(str == "修改密码")
     {
         ui->tabWidget->setCurrentIndex(0);
     }
     if(str == "设置菜单")
     {
         ui->tabWidget->setCurrentIndex(1);
     }
     if(str == "页面配置")
     {
         ui->tabWidget->setCurrentIndex(2);
     }
     if(str == "页面参数")
     {
         ui->tabWidget->setCurrentIndex(3);
     }
}