DeviceID missing on Axim X30?

[Nathan]

DeviceID retrieval seems to be failing on Axim X30.

I call
KernelIoControl(IOCTL_HAL_GET_DEVICEID,

I thought this was supposed to work on everything 2002 and above. Any ideas?

Is there a possibility the output buffer needs to be longer than 256 bytes?

Nathan

 

[Chris Tacke, eMVP]

Failing how? Wahts' the return value? What's the LastWin32Error reported?

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[Nathan]

Return value is false. It is at a customer site, so I don't know the
LastWin32Error.

If the buffer size can be greater than 256, then it is possible this is
ERROR_INSUFFICIENT_BUFFER.

Or, as I've seen in some other forums, there are apparently some platforms
that want the buffer size to be exactly right. Exactly 16 bytes, etc.

Nathan

 

[Nathan]

The code at
http://msdn2.microsoft.com/en-us/library/ms172516(en-US,VS.80).aspx
doesn't work.

It returns false with Marshal.GetLastWin32Error() returning 0. (not
ERROR_INSUFFICIENT_BUFFER)

This is on my device, which works if I start out with a larger buffer 9say
256). I was trying this code to get around devices that don't like the
buffer to be too large. But this isn't helpful.

Any other code I should try?

Nathan