Qt多窗口切换程序

1.ui文件中布局

2.主要程序

main.cpp

#include <QtGui/QApplication>
#include “mainwindow.h”
int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

主界面程序：mainwindow.h

ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include “dialog1.h”
#include “dialog2.h”
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
private slots:
    void on_pushButton_clicked();
    void on_pushButton_2_clicked();
    void on_pushButton_3_clicked();
private:
    Ui::MainWindow *ui;
    Dialog1 dialog1;
    Dialog2 dialog2;
};
#endif // MAINWINDOW_H

mainwindow.cpp

#include “mainwindow.h”
#include “ui_mainwindow.h”
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}
MainWindow::~MainWindow()
{
    delete ui;
}
void MainWindow::on_pushButton_clicked()
{
    this->hide();
    dialog1.show();
    dialog1.exec();
    this->show();
}
void MainWindow::on_pushButton_2_clicked()
{
    this->close();
}
void MainWindow::on_pushButton_3_clicked()
{
    this->close();
    dialog2.show();
    dialog2.exec();
    this->show();
}

dialog1.cpp

#include “dialog1.h”
#include “ui_dialog1.h”
Dialog1::Dialog1(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog1)
{
    ui->setupUi(this);
}
Dialog1::~Dialog1()
{
    delete ui;
}
void Dialog1::on_pushButton_clicked()
{
    this->close();
}