SCROLLBARINFO Structure

[StructLayout(LayoutKind.Sequential)]
 public struct SCROLLBARINFO
 {
     public int cbSize;
     public RECT rcScrollBar;
     public int dxyLineButton;
     public int xyThumbTop;
     public int xyThumbBottom;
     public int reserved;
 
     [MarshalAs(UnmanagedType.ByValArray,
         SizeConst = 6)]
     public int[] rgstate;
 }