Intermec 751G 用户手册

#include “oemioctl.h”

BOOL KernelIoControl( IOCTL_HAL_ITC_READ_PARM,LPVOID 
lpInBuf,DWORD nInBufSize,LPVOID lpOutBuf,DWORD 
nOutBufSize,LPDWORD lpBytesReturned );

Returns TRUE if function succeeds. Returns FALSE if the function fails. 
GetLastError() may be used to get the error value. Either 
ERROR_INVALID_PARAMETER or 
ERROR_INSUFFICIENT_BUFFER may be returned when this function 
is used to get the error.

The id field of the PARMS structure may be one of the following values:

lpInBuf

Points to this structure. See “ID Field Values” below.

struct PARMS { 

BYTE id;
BYTE ClassId;

};

nInBufSize

Must be set to the size of the PARMS structure.

lpOutBuf

Must point to a buffer large enough to hold the return data of the 
function. If this field is set to NULL and nOutBufSize is set to zero 
when the function is called the function will return the number 
bytes required by the buffer.

nOutBufSize

The size of lpOutBuf in bytes.

lpBytesReturned

Number of bytes returned by the function for the data requested.

ITC_NVPARM_ETHERNET_ID
Returns Ethernet 802.11b or 802.11b/g MAC Address. Six bytes returned in buffer pointed to by lpOutBuffer

ITC_NVPARM_SERIAL_NUM
Returns serial number of device in BCD format. Six bytes returned in buffer pointed to by lpOutBuffer

ITC_NVPARM_MANF_DATE
Returns device manufacture date in BCD YYYY/MM/DD format. 4 bytes sent in buffer pointed to by lpOutBuffer

ITC_NVPARM_SERVICE_DATE
Returns last device service date in BCD YYYY/MM/DD format. Four bytes sent in buffer pointed to by lpOutBuffer

ITC_NVPARM_DISPLAY_TYPE
Returns device display type. One byte returned in buffer pointed to by lpOutBuffer

ITC_NVPARM_EDG_IP
Returns device Ethernet debug IP address. Four bytes returned in buffer pointed to by lpOutBuffer