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();
```
}