◄CRgn►                                        ◄Up► ◄Contents► ◄Index► ◄Back►
──Microsoft Foundation Classes──────────────────────────────────────────────
 
  void SetRectRgn( int x1, int y1, int x2, int y2 );
  void SetRectRgn( LPRECT lpRect );
 
  Parameter   Description
 
  <x1>        Specifies the x-coordinate of the upper-left corner of the
              rectangular region.
 
  <y1>        Specifies the y-coordinate of the upper-left corner of the
              rectangular region.
 
  <x2>        Specifies the x-coordinate of the lower-right corner of the
              rectangular region.
 
  <y2>        Specifies the y-coordinate of the lower-right corner of the
              rectangular region.
 
  <lpRect>    Specifies the rectangular region. Can be either a pointer to
              a RECT structure or a CRect object.
 
  Remarks
 
  Creates a rectangular region. Unlike ◄CreateRectRgn►, however, it does
  not allocate any additional memory from the local Windows application
  heap. Instead, it uses the space allocated for the region stored in the
  CRgn object. This means that the CRgn object must already have been
  initialized with a valid Windows region before calling SetRectRgn. The
  points given by <x1>, <y1>, <x2>, and <y2> specify the minimum size of
  the allocated space.
 
  Use this function instead of the ◄CreateRectRgn► function to avoid calls
  to the local memory manager.
 
  See Also
 
  ◄CRgn::CreateRectRgn►, ◄::SetRectRgn►
 
 
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