Purpose: retrieve currently set timeout value in ms units
Parameter:
IN: -
OUT: ULONG ulTimeoutValue
Possible errors (see also Error codes):
E_FARC_INVALID_HANDLE
E_FARC_BUFFER_TOO_SMALL
Comment:
Retrieves the previously set timeout value for ReadFile operations in
the
driver.
Note: A return value of '0' means, that the driver waits
infinitely for the receipt of an ARCNET data packet when performing a
ReadFile operation (this is the default state).
Example:
Note, that the following example is only a fragment. It is recommended,
that the driver is opened in asynchronous mode and a handle to the
driver
is available.
OVERLAPPED overlapped;
DWORD read, err;
BOOL ret;
ULONG ulTimeout;
overlapped.Offset = 0;
overlapped.OffsetHigh = 0;
overlapped.hEvent =
CreateEvent(NULL,TRUE,FALSE,NULL);
...
ret = DeviceIoControl(drvhandle,
IOCTL_FARC_GET_READ_TIMEOUT,
NULL, 0,
&ulTimeout, sizeof(ulTimeout),
&read,
&overlapped);
if (!ret)
{
err = GetLastError();
if (err == E_FARC_PENDING)
{
ret
= GetOverlappedResult(drvhandle, &overlapped, &read, TRUE);
if
(!ret)
{
err = GetLastError();
// do errorhandling here
}
}
else
{
//
other error occured, perhaps wrong handle
}
}
printf ("Currently used timeout value:
%lu", ulTimeout)
;
...