Checkbox with CListCtrl

Hi,
here is my code

Code:

OnCheckboxChanged
( NMHDR*                  pNMHeader,
  LRESULT*                pResult )
{
	
	 
	 CListCtrl* a_pStatus = (CListCtrl*) GetDlgItem(IDC_DLG_FWUPDATE_FILES_LOCALFILES);
	 NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHeader;
	 LVHITTESTINFO hitinfo; 

//Get the current element item selected.
	hitinfo.pt = pNMListView->ptAction; 

//Make the hit test... 
	OC_ULong_t item = a_pStatus->HitTest(&hitinfo); 

	if ((IsChecked(pNMListView->uNewState)))
		a_pStatus->SetCheck(item,false);
//*pResult = 0;
  if((IsChecked(pNMListView->uNewState))&&(m_FWInfo.size() != 0))
   GetDlgItem(IDC_BUTTON_DETAILS)->EnableWindow(true);
  else
   GetDlgItem(IDC_BUTTON_DETAILS)->EnableWindow(false);


}

What is am doing is Enabling the "IDC_BUTTON_DETAILS" button only if one checkbox is set.Can any one tell me other way of doing this?...I want the check box to be set only if mouse is clicked on the checkbox not on the text of the cell which has the check box.... Can anyone please help????