Microsoft Foundation Classes (mfc.hlp) (Table of Contents; Topic list)
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CWnd::ScrollWindow
CWnd                                        Up Contents Index Back
──Microsoft Foundation Classes──────────────────────────────────────────────
 
  void ScrollWindow( int xAmount, int yAmount, LPRECT lpRect = NULL,
                     LPRECT lpClipRect = NULL );
 
  Parameter    Description
 
  <xAmount>    Specifies the amount (in device units) to scroll in the
               x-axis direction.
 
  <yAmount>    Specifies the amount (in device units) to scroll in the
               y-axis direction.
 
  <lpRect>     Points to a CRect or RECT structure that specifies the
               portion of the client area to be scrolled. If <lpRect> is
               NULL, the entire client area is scrolled.
 
  <lpClipRect> Points to a CRect or RECT structure that specifies the
               clipping rectangle to be scrolled. Only bits inside this
               rectangle are scrolled. If <lpClipRect> is NULL, the entire
               window is scrolled.
 
  Remarks
 
  Scrolls the current CWnd object by moving the contents of the window's
  client area the number of units specified by <xAmount> along the
  screen's x-axis and the number of units specified by <yAmount> along the
  y-axis. The scroll moves right if <xAmount> is positive and left if it
  is negative. The scroll moves down if <yAmount> is positive and up if it
  is negative.
 
  If the caret is in the CWnd being scrolled, ScrollWindow automatically
  hides the caret to prevent it from being erased, then restores the caret
  after the scroll is finished. The caret position is adjusted
  accordingly.
 
  The area uncovered by the ScrollWindow member function is not repainted,
  but is combined into the current CWnd object's update region. The
  WM_PAINT message will be sent, notifying it that the region needs
  repainting. To repaint the uncovered area at the same time the scrolling
  is done, call the UpdateWindow member function immediately after
  calling ScrollWindow.
 
  If <lpRect> is NULL, the positions of any child windows in the window
  are offset by the amount specified by <xAmount> and <yAmount>, and any
  invalid (unpainted) areas in the CWnd are also offset. ScrollWindow is
  faster when <lpRect> is NULL.
 
  If <lpRect> is not NULL, the positions of child windows are not changed,
  and invalid areas in CWnd are not offset. To prevent updating problems
  when <lpRect> is not NULL, call the UpdateWindow member function to
  repaint CWnd before calling ScrollWindow.
 
  See Also
 
  CWnd::UpdateWindow, ::ScrollWindow
 
 
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