Microsoft Foundation Classes (mfc.hlp) (Table of Contents; Topic list)
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CWnd::OnVScroll
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──Microsoft Foundation Classes──────────────────────────────────────────────
 
  afx_msg void OnVScroll( UINT  nSBCode, UINT  nPos,
                          CScrollBar*  pScrollBar  );
 
  Parameter    Description
 
  <nSBCode>    Contains a scroll-bar code that specifies the user's
               scrolling request. This parameter can be one of the
               following values:
 
               Value              Description
 
               SB_BOTTOM          Scroll to bottom.
 
               SB_ENDSCROLL       End scroll.
 
               SB_LINEDOWN        Scroll one line down.
 
               SB_LINEUP          Scroll one line up.
 
               SB_PAGEDOWN        Scroll one page down.
 
               SB_PAGEUP          Scroll one page up.
 
               SB_THUMBPOSITION   Scroll to the absolute position. The
                                  current position is provided in <nPos>.
 
               SB_THUMBTRACK      Drag scroll box to specified position.
                                  The current position is provided in
                                  <nPos>.
 
               SB_TOP             Scroll to top.
 
  <nPos>       Contains the scroll-box position if the scroll-bar code is
               SB_THUMBPOSITION; otherwise, not used.
 
  <pScrollBar> If the message is sent by a scroll-bar control,
               <pScrollBar> identifies the control. If the message is sent
               as a result of the user clicking a pop-up window's scroll
               bar, <pScrollBar> is not used. The pointer may be
               temporary.
 
  Remarks
 
  Called when the user clicks a vertical scroll bar.
 
  OnVScroll typically is used by applications that give some feedback
  while the scroll box is being dragged.
 
  If OnVScroll scrolls the contents of CWnd, it must also reset the
  position of the scroll box by using the ◄SetScrollPos► member function.
 
  This message-handler member function calls the ◄Default► member
  function. Override this member function in your derived class to handle
  the ◄WM_VSCROLL► message.
 
  See Also
 
  ◄CWnd::SetScrollPos►, ◄CWnd::OnHScroll►, ◄WM_VSCROLL►, ◄CWnd::Default►
 
 
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