Excuse me,, I now have a demand to be this way
There are a lot of buttons, each column is a QButtonGroup, between the same column button is mutually exclusive, then how can I pass a for loop to each column a button to make a table ah, I am Tony, a trouble, grant instruction!
Now I wrote this

 m_pHLayout=new QHBoxLayout (); 

QGridLayout * m_pBtnLayout1=new QGridLayout (); 

QButtonGroup * m_pBtnGroup1=new QButtonGroup (); 

for(int i=0; I & lt; 16. I++) 
{
CustomBtn * m_pBtn=new CustomBtn (); 

M_pBtn - & gt; SetText (QString (" % 1 "). Arg (I + 1)); 

M_pBtn - & gt; SetCheckable (true);//set can be selected to 

M_pBtnGroup1 - & gt; AddButton (m_pBtn, I); 

M_pBtnLayout1 - & gt; AddWidget (m_pBtn); 

} 
M_pBtnGroup1 - & gt; SetExclusive (true);//set mutex 

The connect (m_pBtnGroup1, SIGNAL (buttonClicked (int)), and this, SLOT (slotCurrentIndex (int))); 

M_pHLayout - & gt; AddLayout (m_pBtnLayout1); 

This - & gt; SetLayout (m_pHLayout);