'Insert this in your WndProc where you want to process the scroll
'this can be used where a form or groupbox is sub-classed.
  static int BCX_SmallChangeX;
  static int BCX_SmallChangeY;
  static int BCX_LargeChangeX;
  static int BCX_LargeChangeY;
  static int BCX_ScrollInit;

  if(!BCX_ScrollInit) Then

     BCX_siY.cbSize=sizeof(BCX_siY);
     BCX_siX.cbSize=sizeof(BCX_siX);
     BCX_siY.fMask=SIF_ALL;
     BCX_siX.fMask=SIF_ALL;
     BCX_siX.nMax=BCX_ScrollViewWidth;
     BCX_siY.nMax=BCX_ScrollViewHeight;
     BCX_SmallChangeX=1;
     BCX_LargeChangeX=20;
     BCX_SmallChangeY=1;
     BCX_LargeChangeY=20;
     BCX_siY.nPage=1;
     BCX_siX.nPage=1;
     SetScrollInfo(hWnd,SB_VERT,&BCX_siY,TRUE);
     SetScrollInfo(hWnd,SB_HORZ,&BCX_siX,TRUE);
     BCX_DynaScroll=TRUE;
     BCX_ScrollInit=TRUE;
  End If

 if(Msg=WM_HSCROLL BOR WM_VSCROLL BOR WM_SIZE) Then
     BCX_Scroll(hWnd,Msg,wParam,lParam,BCX_LargeChangeX, _
     BCX_LargeChangeY,BCX_SmallChangeX,BCX_SmallChangeY, _
     BCX_ScrollViewWidth,BCX_ScrollViewHeight,BCX_DynaScroll)
   EXIT FUNCTION
 End If