| Microsoft DirectX 8.1 (C++) | 
The DIDFT_GETINSTANCE macro extracts the object instance number code from a data format type.
DIDFT_GETINSTANCE(n) LOWORD((n) >> 8)
  Windows NT/2000/XP: Requires Windows® 2000.
  Windows 98/Me: Requires Windows 98 or later. Available as a redistributable for Windows 98.
  Header: Declared in Dinput.h.