FIX: Disabled DDX Radio Button Causes Infinite Loop

MORE INFORMATION

Sample Code

   //  DDX_MyRadio(), which is a modified DDX_Radio().
   // 
   void AFXAPI DDX_MyRadio(CDataExchange* pDX, int nIDC, int& value)
       // must be first in a group of auto radio buttons
   {
      HWND hWndCtrl = pDX->PrepareCtrl(nIDC);
      ASSERT(::GetWindowLong(hWndCtrl, GWL_STYLE) & WS_GROUP);
      ASSERT(::SendMessage(hWndCtrl, WM_GETDLGCODE, 0, 0L) &
   DLGC_RADIOBUTTON);
      if( pDX->m_bSaveAndValidate )
         value = -1;     // value if none found
      // walk all children in group
      int iButton = 0;
      do
      {
         if( ::SendMessage(hWndCtrl, WM_GETDLGCODE, 0, 0L) &
   DLGC_RADIOBUTTON
   )
         {
         // control in group is a radio button
            if( pDX->m_bSaveAndValidate )
            {
               if( ::SendMessage(hWndCtrl, BM_GETCHECK, 0, 0L) != 0 )
               {
                  ASSERT(value == -1);    // only set once
                  value = iButton;
               }
            }
            else
            {
            // select button
               ::SendMessage( hWndCtrl, BM_SETCHECK, (iButton == value), 0L
   );
            }
            iButton++;
         }
         else
         {
            TRACE( "Warning: skipping non-radio button in group.\n" );
         }
         hWndCtrl = ::GetWindow( hWndCtrl, GW_HWNDNEXT );
      } while(hWndCtrl!=NULL &&
   !(GetWindowLong(hWndCtrl,GWL_STYLE)&WS_GROUP));
   }
				

      //{{AFX_DATA_MAP(CMyDialog)
      DDX_Radio(pDX, IDC_RADIO1, m_iRadio);
      //}}AFX_DATA_MAP
				

      //{{AFX_DATA_MAP(CMyDialog)
      DDX_MyRadio(pDX, IDC_RADIO1, m_iRadio);
      //}}AFX_DATA_MAP