Elo TouchSystems 1525L manual MagTek Device Drivers for Windows, STAGE 6, CreateEvent NULL

MagTek Device Drivers for Windows

/** clear overlapped structure */ memset ( &ov_r, 0, sizeof (ov_r) ); memset ( &ov_w, 0, sizeof (ov_w) );

if (argc < 2)

drv_h = OPEN_DEVICE ("COM5"); /* Must Specify proper COM# as default */ else

drv_h = OPEN_DEVICE (argv[1]); if (drv_h == INVALID_HANDLE_VALUE)

{

ws = GetLastError();

printf("Can NOT open device : %s. Error : 0x%lx", "", ws); return ( stage);

}

{DCB dcb; GetCommState(drv_h, &dcb); dcb.BaudRate = CBR_9600; dcb.Parity = NOPARITY; dcb.ByteSize = 8; dcb.StopBits = ONESTOPBIT; dcb.fParity = 0; dcb.fBinary = 1; dcb.fOutxCtsFlow = 0; dcb.fOutxDsrFlow = 0; dcb.fDtrControl = DTR_CONTROL_ENABLE; SetCommState(drv_h, &dcb);

}

#define STAGE(idx, op, msg)		\
ret_h = op;		\
if	(ret_h==NULL)	\
	{	\
	printf("%s\n", (msg));	\
	break;	\
	}	\
stage = idx;
do {
STAGE ( 6, CreateEvent (NULL,	TRUE, FALSE, NULL),
"Can't Create Overlapped Event(read)" );
ov_r.hEvent = ret_h;

STAGE ( 7, CreateEvent (NULL, TRUE, FALSE, NULL), "Can't Create Overlapped Event(write)" );

ov_w.hEvent = ret_h;

STAGE ( 8,
CreateThread(
NULL,	// address of thread security attributes
0L,	// initial thread stack size, in bytes
(LPTHREAD_START_ROUTINE)output_thread,// adr of thread function
NULL,	// argument for new thread
0L,	// creation flags 0-run immediately
&retdw	// address of returned thread identifier
),

"Can't Create output thread" ); out_threadh = ret_h;

STAGE ( 9,

CreateThread(

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