Qt基础学习（6）------多页面切换之QTabWidget

 //mydialog.h
#ifndef MYDIALOG_H
#define MYDIALOG_H
#include <QDialog>
class QTabWidget;
class MyDialog : public QDialog
{
  Q_OBJECT
public:
  explicit MyDialog(QWidget *parent = 0);
signals:
public slots:
private:
  QTabWidget *tabWidget;
};
#endif // MYDIALOG_H

//mydialog.cpp
#include "mydialog.h"
#include <QtGui/QTabWidget>
#include <QtGui/QHBoxLayout>
#include <QtGui/QVBoxLayout>
#include <QtGui/QLabel>
#include <QtGui/QLineEdit>
#include <QtGui/QPushButton>
#include <QtGui/QWidget>
#include <QtGui/QIcon>
MyDialog::MyDialog(QWidget *parent) :
  QDialog(parent)
{
  tabWidget = new QTabWidget();

  //新建第一个页面的部件
  QWidget *widget = new QWidget();
  QLineEdit *lineEdit = new QLineEdit();
  QPushButton *pushButton = new QPushButton("Test");
  QVBoxLayout *vLayout = new QVBoxLayout();
  vLayout->addWidget(lineEdit);
  vLayout->addWidget(pushButton);
  widget->setLayout(vLayout);


  //新建第二个页面的部件
  QLabel *label = new QLabel("Hello Qt");

  //新建第三个页面的部件
  QPushButton *pushButton3 = new QPushButton("Click Me");

  //向QTabWidget中添加第一个页面
  QIcon icon1(":/new/icon/images/1.ico");
  tabWidget->addTab(widget, icon1, "Tab1");

  //向QTabWidget中添加第二个页面
  QIcon icon2(":/new/icon/images/2.ico");
  tabWidget->addTab(label, icon2, "Tab2");

  //向QTabWidget中添加第三个页面
  QIcon icon3(":/new/icon/images/3.ico");
  tabWidget->addTab(pushButton3, icon3, "Tab3");

  QHBoxLayout *layout = new QHBoxLayout();
  layout->addWidget(tabWidget);

  this->setLayout(layout);
  this->resize(300, 100);
  this->setWindowTitle("QTabWidgetDemo");
}

//main.cpp
#include <QtGui/QApplication>
#include "mydialog.h"
int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  MyDialog dialog;
  dialog.show();
  return a.exec();
}

资源文件截图：

程序运行截图：