Método IsRectInRegion del objeto Region

HRESULT IsRectInRegion(
  int           Left,
  int           Top,
  int           Right,
  int           Bottom,
  VARIANT_BOOL* Result
);

bool IsRectInRegion(
  int Left,
  int Top,
  int Right,
  int Bottom
);

Function IsRectInRegion( _
  Left As Integer, _
  Top As Integer, _
  Right As Integer, _
  Bottom As Integer _
) As Boolean