堆棧窗口可以根據(jù)選擇項(xiàng)的不同顯示不同的窗體

    // stackeddlg.h
#ifndef STACKEDDLG_H
#define STACKEDDLG_H

#include <QDialog>
#include <QLabel>
#include <QListWidget>
#include <QStackedWidget>

class StackedDlg : public QDialog
{
    Q_OBJECT
public:
    explicit StackedDlg(QWidget *parent = 0);
signals:
public slots:

private:
    QLabel *textLabel;
    QLabel *showLabel;
    QLabel *aboutLabel;
    QListWidget *list;
    QStackedWidget *stack;
};
#endif // STACKEDDLG_H
  

    //stackeddlg.cpp
#include "stackeddlg.h"
#include <QHBoxLayout>

StackedDlg::StackedDlg(QWidget *parent) :
    QDialog(parent)
{
    //創(chuàng)建一個(gè)QListWidget控件 并向其中添加列表項(xiàng)
    list = new QListWidget();
    list->insertItem(0, tr("文本窗口"));
    list->insertItem(1, tr("顯示窗口"));
	list->insertItem(2, tr("關(guān)于窗口"));
	
    textLabel = new QLabel(tr("學(xué)習(xí)使用堆棧窗口"));
    showLabel = new QLabel(tr("僅僅是一個(gè)示例程序"));
	aboutLabel = new QLabel(tr("歡迎交流,共同學(xué)習(xí)"));
	
    //創(chuàng)建QStackedwidget控件
    stack = new QStackedWidget();
    //將控件添加到堆棧窗口中
    stack->addWidget(textLabel);
    stack->addWidget(showLabel);
	stack->addWidget(aboutLabel);
	
    //使用一個(gè)水平布局管理器對(duì)對(duì)話框進(jìn)行布局
    QHBoxLayout *mainLayout = new QHBoxLayout(this);
    mainLayout->addWidget(list);
    mainLayout->addWidget(stack, 0, Qt::AlignHCenter);
    //設(shè)置mainLayout的邊框與對(duì)話框邊緣的距離
    mainLayout->setMargin(5);
    mainLayout->setSpacing(5);
    //信號(hào)與槽的連接，實(shí)現(xiàn)按選擇顯示窗體
    //此處堆棧窗口的index按插入的順序從0依次排序，與QListWidget的條目排序一致
	connect(list, SIGNAL(currentRowChanged(int)), stack, SLOT(setCurrentIndex(int)));
	
    this->setWindowTitle(tr("堆棧窗口"));
}
  

    //main.cpp
#include <QApplication>
#include <QTextCodec>
#include "stackeddlg.h"
int main(int argc, char *argv[])
{
    QTextCodec::setCodecForTr(QTextCodec::codecForLocale());
    QApplication app(argc, argv);
    StackedDlg dlg;
    dlg.show();
    return app.exec();
}
  

Qt使用QStackedWidget實(shí)現(xiàn)堆棧窗口