Qt学习：Action on menu to display another ui

在一个UI界面中设置一个按钮，当点击该按钮之后，显示另一UI界面窗体。

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//mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QPushButton>
#include "wizard.h"

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

    QPushButton *push;
    Wizard * wiz;

private slots:
    void on_pushButton_clicked();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

//mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>

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

MainWindow::~MainWindow()
{
    delete wiz;
    delete ui;
}

void MainWindow::on_pushButton_clicked()
{
    wiz = new Wizard(this);
   // qDebug() << "1";
    wiz->show();
}

//wizard.h
#ifndef WIZARD_H
#define WIZARD_H

#include <QWizard>//QWizard是Qt的向导类

namespace Ui {
class Wizard;
}

class Wizard : public QWizard
{
    Q_OBJECT

public:
    explicit Wizard(QWidget *parent = 0);
    ~Wizard();

private:
    Ui::Wizard *ui;
};

#endif // WIZARD_H

//wizard.cpp
#include "wizard.h"
#include "ui_wizard.h"

Wizard::Wizard(QWidget *parent) :
    QWizard(parent),
    ui(new Ui::Wizard)
{
    ui->setupUi(this);
}

Wizard::~Wizard()
{
    delete ui;
}

//测试。。。main.cpp
#include <QtGui/QApplication>
#include "mainwindow.h"
#include "wizard.h"

#include <QDebug>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

结果：点击按钮之前:                                                                                                                                点击按钮之后：
                       
注释：
QWizard类：QWizard类是Qt的向导类，提供了一个向导对话框的框架，具体说明参考
1》  
2》  http://harmattan-dev.nokia.com/docs/library/html/qt4/qwizardpage.html