title: Catching ListView BeginScroll and EndScroll Events
body: <p>Is any way to catch events when ListView begins vertical scrolling and ends it? <br/>
  First of all I tried to catch LVN_BEGINSCROLL and LVN_ENDSCROLL notifications, but the result not justified what I expected. Maybe I was wrong trying to handle these notifications (in parent form I handled WM_NOTIFY message and in it's handler I checked Msg.NMHdr.code). <br/>
  Also I tried to handle WM_VSCROLL message of my ListView and checked ScrollCode = SB_ENDSCROLL. But how to detect BeginScroll event? <br/>
  And when I scrolling ListView by mouse wheel WM_VSCROLL does not come. WM_MOUSEWHEEL messages comes instead. How to detect and handle events what I need with WM_MOUSEWHEEL message? Is it possible by checking delta, that is is high-order word in wParam of WM_MOUSEWHEEL message?</p>
  
  <p>Or what can I do? <br/>
  Thanks.</p>