wmisampleioctl.h

windows 2000/xpWDM设备驱动程序开发光盘代码

// WMISampleioctl.h
//
// Define control codes for WMISample driver
//

#ifndef __WMISampleioctl__h_
#define __WMISampleioctl__h_

#define INCX CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define DECX CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_BUFFERED, FILE_ANY_ACCESS)
#endif