Qt布局之QStackedLayout

QWidget *w=new QWidget;

QHBoxLayout *mainLayout=new QHBoxLayout;

QListWidget *listwidget=new QListWidget(w);

listwidget->addItem(QStringLiteral("第一个界面"));

listwidget->addItem(QStringLiteral("第二个界面"));

QWidget *page1 = new QWidget(w);

QWidget *page2 = new QWidget(w);

QLabel *label1=new QLabel(page1);

QLabel *label2=new QLabel(page2);

label1->setText(QStringLiteral("第一个界面"));

label2->setText(QStringLiteral("第二个界面"));

QVBoxLayout *leftLayout=new QVBoxLayout;

leftLayout->addWidget(listwidget);

QStackedLayout *rightLayout=new QStackedLayout;

rightLayout->addWidget(page1);

rightLayout->addWidget(page2);

mainLayout->addLayout(leftLayout);

mainLayout->addLayout(rightLayout);

w->setLayout(mainLayout);

listwidget->setCurrentRow(0);

connect(listwidget,SIGNAL(currentRowChanged(int)),rightLayout,SLOT(setCurrentIndex(int)));

w->show();