Re: CreateFile api call failing

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

You have to tell it what adapter to open. Since that's either not all of
your code or it doesn't do that... Here's a piece of code from one of my
programs to get the BSSID list. You'll have to ignore some of the calls
which I haven't included and, of course, error handling is minimal:

-----

HRESULT GetSSIDList( TCHAR *adapName, NDIS_802_11_BSSID_LIST *&bssidList,
BOOL clearCache = FALSE )
{
// If we are going to clear the cache, send the OID_802_11_BSSID_LIST_SCAN
// OID to the driver.
if ( clearCache )
{
RefreshSSIDList( adapName );

// A delay seems to be needed here to allow time to find the SSID
// values.
Sleep( 1000 );
}

// Retrieve a list of NDIS_802_11_BSSID_LIST structures from the driver
// and return that list, as well as the number of entries found. The
// list must be deleted by calling FreeSSIDList().
DWORD dwBytesReturned = 0;
DWORD size = sizeof( NDISUIO_QUERY_OID ) + 2000;
PNDISUIO_QUERY_OID queryOID = (PNDISUIO_QUERY_OID)LocalAlloc( LPTR, size );
HANDLE ndisAccess = INVALID_HANDLE_VALUE;
BOOL retval;
HRESULT hr;

// Attach to NDISUIO.
ndisAccess = CreateFile( NDISUIO_DEVICE_NAME, 0, 0, NULL, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, INVALID_HANDLE_VALUE );
if ( ndisAccess == INVALID_HANDLE_VALUE )
return E_FAIL; // ????

// Get list
queryOID->ptcDeviceName = adapName;
queryOID->Oid = OID_802_11_BSSID_LIST;

retval = DeviceIoControl( ndisAccess,
IOCTL_NDISUIO_QUERY_OID_VALUE,
(LPVOID) queryOID,
size,
(LPVOID) queryOID,
size,
&dwBytesReturned,
NULL);
if( retval )
{
bssidList = (NDIS_802_11_BSSID_LIST *)( &queryOID->Data );
}
else
{
// We might just need more room.
// ????

LocalFree( queryOID );
bssidList = 0;

hr = E_FAIL;
}

CloseHandle( ndisAccess );

return hr;
}

-----

Paul T.

"joy" <joy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:11A812D1-A18E-4478-B5FE-47DED91638C9@xxxxxxxxxxxxxxxx
Hi ,
thanks for your help ,
i have opened the device handle.
but i m getting invalid parameter error when i m trying to use the
following
call after it
pQueryOid = (PNDISUIO_QUERY_OID)&QueryBuffer[o];
pQueryOid->Oid = (NDIS_OID)OidCode
DeviceIoControl(hMac,
//handle obtained after create file and IOCTL_NDISUIO_OPEN_DEVICE
IOCTL_NDISUIO_QUERY_OID_VALUE,
(LPVOID)pQueryOid,
sizeof(NDISUIO_QUERY_OID) + sizeof(DWORD)
MyReturnedCount,
lpOverlapped)

please advice me.
can i use the above call fo all the OIDS eg for fetching BSSID list
or only for long values.
thanks
joy



"Paul G. Tobey [eMVP]" wrote:

You would not use CreateFile( adaptername, ... ) to do that. Look up
NDISUIO and use that to send OIDs to the driver. Obviously, Windows CE
is
*not* XP, so expecting this back door method of accessing drivers from
applications to work the same is, at best, naive.

Paul T.

"joy" <joy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:D8BA7E87-D0F4-411A-99A4-FE6290CC9C5E@xxxxxxxxxxxxxxxx
Hi,
i m trying to configure n check the driver using oids.
hence i m trying to open the interface to get a valid handle.
is there any other call which you would advice to achieve the same or
there
is some important thing i m missing out.
i would like to mention here that the same call succedds in normal xp
desktops.
thanks
joy


"Paul G. Tobey [eMVP]" wrote:

No, that's still not what you're trying to do; it's how you're trying
to
do
it. You want to, what, send raw packets over the interface? Query
some
status or information about the interface?

Paul T.

"joy" <joy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:C9760CE3-2381-4E2E-8080-70261FA6E814@xxxxxxxxxxxxxxxx
hi ,
i m trying to open ISL1 interface and want to get a valid handle,to
use
them
furthe rin
devioctl calls.
thanks
joyjit

"Paul G. Tobey [eMVP]" wrote:

If you're trying to open "NE20001", that will never work. *What*
are
you
trying to accomplish (you've told us *how* you've decided to do it,
but
not
what you're trying to do)?

Paul T.

"joy" <joy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:8C7CAA72-9DA3-4C01-9800-D22B0F592F78@xxxxxxxxxxxxxxxx
os used : wince5.0
hi ,
i m trying to open a wlan driver interface using this call,
the call is failing with an error code 55.and the
HANDLE hMac ;
szMacFileName is the interafce name:
hMac = CreateFile(szMacFileName,
GENERIC_READ,
0, // FILE_SHARE_READ |
FILE_SHARE_WRITE,
&SecurityAttributes,
OPEN_EXISTING,
dwFileAttributes,(value is
FILE_ATTRIBUTE_NORMAL)
NULL
);
please advice me on the relevant solutions
thanks in advance
joy











.

Relevant Pages

  • Re: OID_DOT11_XXX OIDs?
    ... the Cisco driver, ... > Hi Paul: ... > Or these OIDs are not implemented in the miniport driver? ...
    (microsoft.public.windowsce.platbuilder)
  • Re: CreateFile api call failing
    ... but i m getting invalid parameter error when i m trying to use the following ... NDISUIO and use that to send OIDs to the driver. ... Paul T. ... hence i m trying to open the interface to get a valid handle. ...
    (microsoft.public.windowsce.app.development)
  • Re: CreateFile api call failing
    ... NDISUIO and use that to send OIDs to the driver. ... Paul T. ... hence i m trying to open the interface to get a valid handle. ...
    (microsoft.public.windowsce.app.development)
  • Re: C# Service for Windows CE 6.0 R2
    ... In the CE5 help, which is what I have on this computer, look under Windows ... Paul T. ... will not require a "user interface" in the form of a GUI. ...
    (microsoft.public.windowsce.embedded)
  • Re: CreateFile api call failing
    ... i m trying to configure n check the driver using oids. ... hence i m trying to open the interface to get a valid handle. ... Paul T. ... HANDLE hMac; ...
    (microsoft.public.windowsce.app.development)