Get serial number different for PPC2003 than WM5/5

I use the following code to get the serial number for my WM5/6 devices:

typedef int (__cdecl *MYPROC)(LPBYTE, DWORD, DWORD, LPBYTE, DWORD *);

MYPROC ProcAdd;

// Attemp to load aygshell.dll
HMODULE hLib = LoadLibrary(_T("coredll.dll"));
if (hLib)
{            
      ProcAdd = (MYPROC)GetProcAddress(hLib, _T("GetDeviceUniqueID"));

      if(ProcAdd)
      {

                   HRESULT hr = NOERROR;      
                    const GUID     bApplicationData1  = { 0x8d552bd1, 0xe232, 0x4107, { 0xb7,  
                             0x2d, 0x38, 0xb6, 0xa4, 0x72, 0x64, 0x39 } };
               const DWORD    cbApplicationData1 = sizeof (bApplicationData1);

       // Buffers to hold the two device IDs we are going to generate
      BYTE                g_bDeviceID1[GETDEVICEUNIQUEID_V1_OUTPUT];
      // Lengths of the returned device IDs
      DWORD               g_cbDeviceID1;

      g_cbDeviceID1 = GETDEVICEUNIQUEID_V1_OUTPUT;
      hr = ProcAdd (reinterpret_cast<LPBYTE>(const_cast<LPGUID>
                            &bApplicationData1)), cbApplicationData1,GETDEVICEUNIQUEID_V1,
                                 g_bDeviceID1,
                                 &g_cbDeviceID1);

      TCHAR        szDeviceID[(GETDEVICEUNIQUEID_V1_OUTPUT * 2) + 1];
            
      if (SUCCEEDED (DeviceID2String (g_bDeviceID1, g_cbDeviceID1, szDeviceID,
                                                                                                    ARRAYSIZE (szDeviceID))))
      {
            sSerialNo = szDeviceID;
      }
                  
}
else
{
      AfxMessageBox(_T("GetSerialNumber Error: ProcAdd NULL"));
      sSerialNo.Empty();

}

CloseHandle(hLib);

This works fine in WM5/6 but in PPC2003 it fails here:
ProcAdd = (MYPROC)GetProcAddress(hLib, _T("GetDeviceUniqueID"));
if(ProcAdd)
{
    blah blah
}

Why is this and how can I go about it?

Thanks
Wanting2LearnManAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

pgnatyukCommented:
You can retrieve the same data by using KernelIOControl API with IOCTL_HAL_GET_DEVICEID. PPC2003 does have the privilliged mode, so it is possible to call such API without any problem:
http://msdn.microsoft.com/en-us/library/aa446562.aspx
http://msdn.microsoft.com/en-us/library/ms880643.aspx
 http://forum.soft32.com/pda/device-id-unique-device-ftopict53543.html
 Other tricks about the subject:
1. GetDeviceCaps - you can retrieve OEM info and use it.
2. Phone number or IMEI if it is phone enabled PDA.
3. You can retrieve the serial number of the SD-card.
4. You can generate yourself a unique number and save on a persistent storage.
 
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
pgnatyukCommented:
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Smartphone Programming

From novice to tech pro — start learning today.