QButtonGroup 的使用

1、3以后尽量手写，因为没有现在的控件了

2、

   // lyy : 2016/8/26 12:17:41 说明:存放radioButton
         QButtonGroup *buttonGroup;
   // lyy : 2016/8/26 11:11:55 说明:radioButton
     buttonGroup = new QButtonGroup();
     buttonGroup->addButton (ui.noSpace_Btn, );
     buttonGroup->addButton (ui.smallSpace_Btn, );
     buttonGroup->addButton (ui.mediumSpace_Btn, );
     buttonGroup->addButton (ui.bigSpace_Btn, );

 // lyy : 2016/8/26 14:15:58 说明:用这种方法默认选择与mSelectRadioButton保持一致
     QRadioButton *path = qobject_cast<QRadioButton*> (buttonGroup->button (mSelectRadioButton));
     path->setChecked (true);

   connect (buttonGroup, SIGNAL (buttonClicked (int)), this, SLOT (buttonJudge (int)));

3、槽函数

 void DailyPaper::buttonJudge (int iid)
 {
     quint16 a = buttonGroup->checkedId();
     QMessageBox::information (this, "test", QString::number (a));
     mSelectRadioButton = a;
     //  QMessageBox::information (this, "test1", QString::number (a));
 }