How to figure Device type using RAPI ?

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Shiv - 09 Mar 2006 19:50 GMT

How can i figure if the connected device is a PocketPC or a Smartphone via
RAPI ?

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Peter Foot [MVP] - 09 Mar 2006 20:36 GMT

I'm not sure there is an easy method exposed as a RAPI function, however
once you have an active connection you can query some device properties from
the desktop registry:-
HKEY_CURRENT_USER\Software\Microsoft\Windows CE Services
Value named DeviceType contains the platform name e.g. "PocketPC" or
"Smartphone" You can also get DeviceOemInfo which has an OEM specific
identifier.

Peter

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Peter Foot
Windows Embedded MVP
www.peterfoot.net | www.inthehand.com

> How can i figure if the connected device is a PocketPC or a Smartphone via
> RAPI ?

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Shiv - 10 Mar 2006 20:04 GMT

Peter,

Thank you. This seems like something that i can use.

Do you know where the value for DeviceOemInfo comes from ? Iam sure it comes
form the device so i was wondering if it is in a well known location on the
Device Registry that other programs can query. Also the same with the
DeviceType. Is it somewhere on the device ?

Any help is greatly appreciated.

Thanks,

Shiva

> I'm not sure there is an easy method exposed as a RAPI function, however
> once you have an active connection you can query some device properties from
[quoted text clipped - 8 lines]
> > How can i figure if the connected device is a PocketPC or a Smartphone via
> > RAPI ?

Reply to this Message

Peter Foot [MVP] - 13 Mar 2006 09:49 GMT

Both are accessible on the device with SystemParametersInfo API with
constants SPI_GETOEMINFO and SPI_GETPLATFORMTYPE

Peter

Signature

Peter Foot
Windows Embedded MVP
www.peterfoot.net | www.inthehand.com

> Peter,
>
[quoted text clipped - 27 lines]
>> > via
>> > RAPI ?

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Michael Gledhill - 17 Jul 2008 19:36 GMT

Hi Peter,

> >> once you have an active connection you can query some device properties
> >> from
> >> the desktop registry:-
> >> HKEY_CURRENT_USER\Software\Microsoft\Windows CE Services
> >> Value named DeviceType contains the platform name e.g. "PocketPC" or
> >> "Smartphone"

I've been successfully using this registry value for years, and it's all
worked fine.. until the monster called Vista came along.

If I have code to check this value in my application, but the user who's
running it doesn't have Admin rights (as is quite possible), then I can't
query this key, it fails.
I'm deliberately trying to open the registry key with just
"KEY_QUERY_VALUE" access, so Vista doesn't think I'm a nasty
process attempting to corrupt Microsoft's own registry settings, but
this just doesn't work for non-Admin users.

If a Vista admin user runs it, or if the user "upgrades" to Windows XP,
then it works a treat again.

Oh, and yes, I do have a Manifest file for my app, but I don't want to
add "requireAdministrator" as a requestedPrivilege, as I want to keep
the security settings as low as possible.

Any suggestions to make this work ?

Mike

> Both are accessible on the device with SystemParametersInfo API with
> constants SPI_GETOEMINFO and SPI_GETPLATFORMTYPE
[quoted text clipped - 32 lines]
> >> > via
> >> > RAPI ?

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