Elo TouchSystems 1525L manual Example Applications

Section 5. Example Applications

DWORD		read_len=0;
char		wbuff[1];
char*		p;
while	(!quit)
{
rs	= ReadFile(drv_h, wbuff, sizeof(wbuff), &read_len, &ov_r);
if	( !rs)
	{
	rs = GetLastError ();
	if ( rs != ERROR_IO_PENDING)
	{
	printf("DeviceIOControl (Read) Error : %i (0x%x)\n", rs, rs );
	break;
	}
	}
rs	= WaitForSingleObject ( ov_r.hEvent, INFINITE);
rs	= GetOverlappedResult (
	drv_h,		// handle of file, pipe, or communications device
	&ov_r,		// address of overlapped structure
	&read_len,		// address of actual bytes count
	FALSE		// wait flag
	);
if	(quit)
		break;
if	( rs )
	{
	p = wbuff;
	while (read_len >0)
	{
	if (*p == 0x1a)

{

quit = TRUE; printf("\n\nExiting Test..."); break;

}

putch (*p); ++p; --read_len;

}

}

}

};

// end of file

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