qt中stackedwidget按钮切换widget

你可以将QPushButton的clicked信号连接到QStackedWidget的setCurrentIndex槽上，以实现按钮切换widget的功能。示例代码如下：

// 创建QStackedWidget对象和QPushButton对象
QStackedWidget *stackedWidget = new QStackedWidget(this);
QPushButton *button1 = new QPushButton("Widget 1", this);
QPushButton *button2 = new QPushButton("Widget 2", this);

// 添加两个widget到QStackedWidget中
QWidget *widget1 = new QWidget(this);
QWidget *widget2 = new QWidget(this);
stackedWidget->addWidget(widget1);
stackedWidget->addWidget(widget2);

// 将QPushButton的clicked信号连接到QStackedWidget的setCurrentIndex槽上
connect(button1, &QPushButton::clicked, stackedWidget, [=]() {
    stackedWidget->setCurrentIndex(0);
});
connect(button2, &QPushButton::clicked, stackedWidget, [=]() {
    stackedWidget->setCurrentIndex(1);
});

// 创建布局，并将QPushButton添加到布局中
QHBoxLayout *layout = new QHBoxLayout(this);
layout->addWidget(button1);
layout->addWidget(button2);
layout->addWidget(stackedWidget);

// 设置初始显示的widget
stackedWidget->setCurrentIndex(0);