QT Set radio button (checkbox or RadioButton, etc.) method

Method One: The button in the same buttongroup can only be selected, Buttongroup cannot find 1 in Qtdesigner. Add to Buttongroup, select multiple buttons, right-click, add specified button group

2. Or code Add, the code is as follows
void Buttongroup::initcheckboxgroup ()
{
qbuttongroup* Pbuttongroup = new Qbuttongroup (this);
Pbuttongroup->addbutton (ui.checkbox,1);
Pbuttongroup->addbutton (Ui.checkbox_2, 2);
Pbuttongroup->addbutton (Ui.checkbox_3, 3);
Pbuttongroup->addbutton (Ui.checkbox_4, 4);
Pbuttongroup->addbutton (Ui.checkbox_5, 5);

}

Method Two:

Through the signal statuschange, to determine the status of a checkbox change, set other checkbox state, feel very troublesome, no previous method simple and easy to use