QPushButton 一组中凸显选中的一个，且只能选中一个。

    QButtonGroup * buttonGroup = new QButtonGroup(this);
    buttonGroup->setExclusive(true);
    ui->pushButton_Confirm->setCheckable(true);
    ui->pushButton_Reset->setCheckable(true);
    buttonGroup->addButton(ui->pushButton_Confirm);
    buttonGroup->addButton(ui->pushButton_Reset);

QPushButton#pushButton_Confirm,
QPushButton#pushButton_Reset {
    background-color:rgba(, , , );
    font-size:14px;
    color:rgba(, , , );
    min-height: 40px;
    border:0px solid;
}

QPushButton#pushButton_Confirm:hover,
QPushButton#pushButton_Reset:hover,
QPushButton#pushButton_Confirm:pressed,
QPushButton#pushButton_Reset:pressed,
QPushButton#pushButton_Confirm:checked,
QPushButton#pushButton_Reset:checked{
background-color:rgba(, , , );
}