获取QRadioButton的值

radioButton多选一，并获取当前选择的是哪一个radioButton。

QButtonGroup getThreeFucSelect;ui->radioButton_doorThreeFun0->setChecked(true);    getThreeFucSelect.addButton(ui->radioButton_doorThreeFun0,0);    getThreeFucSelect.addButton(ui->radioButton_doorThreeFun1,1);    getThreeFucSelect.addButton(ui->radioButton_doorThreeFun2,2);    getThreeFucSelect.addButton(ui->radioButton_doorThreeFun3,3);int doorProperty_23 = getThreeFucSelect.checkedId();