本文主要总结用一组按钮QPushbutton，实现有且只能选中一个按钮的功能，效果跟单选按钮一样。

要实单选按钮，只要用一个类QButtonGround就可以实现。

步骤1：调用函数QButtonGround::setExclusive(true)和QPushbutton::setCheckable(true)；

步骤2：将相关的QPushbutton按钮添加进QButtonGround中，用函数QButtonGround::addButton()；

步骤3：用布局管理器挂载按钮进行显示。

1.1代码如下所示:

void Widget::initMenu()
{
    const QSize btnSize(120,90);

    /*菜单按钮初始化*/
    QPushButton *sourceDiskMirrorBtn = new QPushButton(tr("\n\n\n\n\n测试按钮"));
    sourceDiskMirrorBtn->setCheckable(true);
    sourceDiskMirrorBtn->setFixedSize(btnSize);
    sourceDiskMirrorBtn->setStyleSheet("QPushButton{background-image: url(:/resource/icon/menu_sourceDiskMirror.png);background-repeat: no-repeat;background-position:center;border:none;color:rgb(255, 255, 255);}"
                                    "QPushButton:hover{background-image: url(:/resource/icon/menu_sourceDiskMirror.png);background-repeat: no-repeat;background-position:center;border:none;color:rgb(255, 255, 255);}"
                                    "QPushButton:pressed{background-image: url(:/resource/icon/menu_sourceDiskMirror.png);background-repeat: no-repeat;background-position:center;border:none;color:rgb(255, 255, 255);}");
    QPushButton *sourceDiskCopyBtn = new QPushButton();
    sourceDiskCopyBtn->setCheckable(true);
    sourceDiskCopyBtn->setFixedSize(btnSize);
    QPushButton *sourceDiskRestoreBtn = new QPushButton();
    sourceDiskRestoreBtn->setCheckable(true);
    sourceDiskRestoreBtn->setFixedSize(btnSize);
    QPushButton *reportBtn = new QPushButton();
    reportBtn->setCheckable(true);
    reportBtn->setFixedSize(btnSize);
    QPushButton *helpBtn = new QPushButton();
    helpBtn->setCheckable(true);
    helpBtn->setFixedSize(btnSize);

    /*单选菜单效果*/
    QButtonGroup *buttonGround = new QButtonGroup();
    buttonGround->addButton(sourceDiskMirrorBtn);
    buttonGround->addButton(sourceDiskCopyBtn);
    buttonGround->addButton(sourceDiskRestoreBtn);
    buttonGround->addButton(reportBtn);
    buttonGround->addButton(helpBtn);
    buttonGround->setExclusive(true);

    /*容器包含*/
    QHBoxLayout *menuLayout = new QHBoxLayout();
    menuLayout->setMargin(0);
    menuLayout->setSpacing(0);
    menuLayout->addWidget(sourceDiskMirrorBtn);
    menuLayout->addWidget(sourceDiskCopyBtn);
    menuLayout->addWidget(sourceDiskRestoreBtn);
    menuLayout->addWidget(reportBtn);
    menuLayout->addWidget(helpBtn);
    menuLayout->addStretch();

    mainLayout->addLayout(menuLayout);
}

1.2结果如下图所示：

参考内容：

https://blog.csdn.net/zsy19881226/article/details/77825533