qt在gropBox嵌套radioButton

qt在gropBox嵌套时，内部的radioButton选中后会运行外部的radioButton不选中

QButtonGroup* group1 = new QButtonGroup(this);
group1->addButton(ui->radioButton1);
group1->addButton(ui->radioButton2);

QButtonGroup* group2 = new QButtonGroup(this);
group2->addButton(ui->radioButton3);
group2->addButton(ui->radioButton4);