www.pudn.com > WDM_CharSample.rar > CharSampleDeviceInterface.h

// interface.h - device interface classes for CharSample 
 
// This GUID identifies the device interface class used by the CharSampleDevice device 
 
// TODO:	If your driver supports a standard interface, use the GUID that identifies 
//			the interface class, rather than using the one defined below 
 
#define CharSampleDevice_CLASS_GUID \ 
 { 0x2a57bdef, 0xbf9f, 0x4e7a, { 0x91, 0xcc, 0xaa, 0xfc, 0x56, 0x44, 0xe, 0xaf } }