利用Qt实现可扩展对话框的示例代码

private slots:
    void showDetailInfo();

private:
    void createBaseInfo();  //实现基本对话窗体部分
    void createDetailInfo();//实现扩展窗体部分
    QWidget *baseWidget;    //基本窗体部分
    QWidget *detailWidget;  //扩展窗体部分

    QPushButton *DetailBtn; //详细-简略按钮

    setWindowTitle("Extension Dialog");   //窗体标题
    createBaseInfo();
    createDetailInfo();
    QVBoxLayout *layout=new QVBoxLayout(this);//布局
    layout->addWidget(baseWidget);
    layout->addWidget(detailWidget);
    layout->setSizeConstraint(QLayout::SetFixedSize);//设置窗体的大小固定,不能利用拖拽改变大小
    layout->setSpacing(10);   //设置间距为10

//完成基本窗体baseWidget的构建
void Dialog::createBaseInfo()
{
    baseWidget=new QWidget;
    QLabel *nameLabel=new QLabel("姓名:");
    QLineEdit *nameLineEdit=new QLineEdit;
    QLabel *sexLabel=new QLabel("性别:");
    QComboBox *sexComboBox=new QComboBox;
    sexComboBox->insertItem(0,"女");
    sexComboBox->insertItem(1,"男");
    QGridLayout *LeftLayout=new QGridLayout;
    LeftLayout->addWidget(nameLabel,0,0);
    LeftLayout->addWidget(nameLineEdit,0,1);
    LeftLayout->addWidget(sexLabel,1,0);
    LeftLayout->addWidget(sexComboBox,1,1);
    QPushButton *OKBtn=new QPushButton("确定");
    DetailBtn=new QPushButton("详细");
    QDialogButtonBox *btnBox=new QDialogButtonBox(Qt::Vertical);
    btnBox->addButton(OKBtn,QDialogButtonBox::ActionRole);
    btnBox->addButton(DetailBtn,QDialogButtonBox::ActionRole);
    QHBoxLayout *mainLayout=new QHBoxLayout(baseWidget);
    mainLayout->addLayout(LeftLayout);
    mainLayout->addWidget(btnBox);
    connect(DetailBtn,SIGNAL(clicked()),this,SLOT(showDetailInfo()));//点击详细按钮触发showDetailInfo()槽函数
}

//实现扩展窗体detailWidget的构建
void Dialog::createDetailInfo()
{
    detailWidget=new QWidget;
    QLabel *ageLabel=new QLabel("年龄:");
    QLineEdit *ageLineEdit=new QLineEdit;
    ageLineEdit->setText("30");
    QLabel *departmentLabel=new QLabel("部门:");
    QComboBox *departmentComboBox=new QComboBox;
    departmentComboBox->addItem("部门1");
    departmentComboBox->addItem("部门2");
    departmentComboBox->addItem("部门3");
    QLabel *teleLabel=new QLabel("电话:");
    QLineEdit *teleLineEdit=new QLineEdit;
    QGridLayout *mainLayout=new QGridLayout(detailWidget);
    mainLayout->addWidget(ageLabel,0,0);
    mainLayout->addWidget(ageLineEdit,0,1);
    mainLayout->addWidget(departmentLabel,1,0);
    mainLayout->addWidget(departmentComboBox,1,1);
    mainLayout->addWidget(teleLabel,2,0);
    mainLayout->addWidget(teleLineEdit,2,1);
    detailWidget->hide();//隐藏详细窗体
}

//实现窗体的扩展切换功能
void Dialog::showDetailInfo(){
    if(detailWidget->isHidden()){
        detailWidget->show();
        DetailBtn->setText("简略");
    }
    else
    {
        detailWidget->hide();
        DetailBtn->setText("详细");
    }
}