Using SetupDiGetDeviceRegistryProperty to get device type

NTDEV
1

Hi All,

I am trying to retrieve the device type for the USB memory stick by using the funciton
SetupDiGetDeviceRegistryProperty.
Before this I use the follwing APIs to get the Device Info Data(to be used in this API).

  1. Call to SetupDiGetClassDevs which gives the handle to device info set.
  2. Call to SetupDiEnumDeviceInterfaces and along with this I call
    SetupDiGetDeviceInterfaceDetail to get the device info data.

Then I use it in the call to SetupDiGetDeviceRegistryProperty:
SetupDiGetDeviceRegistryProperty(hDevInfo, &dev_info_data, SPDRP_CAPABILITIES , &PropertyRegDataType, NULL, 0, &RequiredSize);
PropertyBuffer = (BYTE*)malloc(RequiredSize);
if(!SetupDiGetDeviceRegistryProperty(hDevInfo, &dev_info_data, SPDRP_CAPABILITIES , &PropertyRegDataType, PropertyBuffer, RequiredSize, &RequiredSize));

But it still fails and the error code is 13, i.e. ERROR_INVALID_DATA.
Can you please throw some light as to why this thing is happening.

Thanks
Pankaj

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2

Many of the SetupDi* calls require that “output” structures (structures
that the SetupDi* function are returning to you, the caller) be
*partially* initialized. Usually this just means that the cbSize field
must be initialized to sizeof(SP_WHATEVER_STRUCT).

If that is not the problem, then please state exactly which API call is
failing.

– arlie

From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Pankaj Adlakha
Sent: Wednesday, May 31, 2006 5:06 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] Using SetupDiGetDeviceRegistryProperty to get device
type

Hi All,

I am trying to retrieve the device type for the USB memory stick by
using the funciton
SetupDiGetDeviceRegistryProperty.
Before this I use the follwing APIs to get the Device Info Data(to be
used in this API).

  1. Call to SetupDiGetClassDevs which gives the handle to device info
    set.
  2. Call to SetupDiEnumDeviceInterfaces and along with this I call
    SetupDiGetDeviceInterfaceDetail to get the device info data.

Then I use it in the call to SetupDiGetDeviceRegistryProperty:
SetupDiGetDeviceRegistryProperty(hDevInfo, &dev_info_data,
SPDRP_CAPABILITIES , &PropertyRegDataType, NULL, 0, &RequiredSize);
PropertyBuffer = (BYTE*)malloc(RequiredSize);
if(!SetupDiGetDeviceRegistryProperty(hDevInfo, &dev_info_data,
SPDRP_CAPABILITIES , &PropertyRegDataType, PropertyBuffer, RequiredSize,
&RequiredSize));

But it still fails and the error code is 13, i.e. ERROR_INVALID_DATA.
Can you please throw some light as to why this thing is happening.

Thanks
Pankaj

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3

Check the example of enumdisk in DDK.

On 5/31/06, Pankaj Adlakha wrote:
>
> Hi All,
>
> I am trying to retrieve the device type for the USB memory stick by using
> the funciton
> SetupDiGetDeviceRegistryProperty.
> Before this I use the follwing APIs to get the Device Info Data(to be used
> in this API).
> 1. Call to SetupDiGetClassDevs which gives the handle to device info set.
> 2. Call to SetupDiEnumDeviceInterfaces and along with this I call
> SetupDiGetDeviceInterfaceDetail to get the device info data.
>
> Then I use it in the call to SetupDiGetDeviceRegistryProperty:
> SetupDiGetDeviceRegistryProperty(hDevInfo, &dev_info_data,
> SPDRP_CAPABILITIES , &PropertyRegDataType, NULL, 0, &RequiredSize);
> PropertyBuffer = (BYTE*)malloc(RequiredSize);
> if(!SetupDiGetDeviceRegistryProperty(hDevInfo, &dev_info_data,
> SPDRP_CAPABILITIES , &PropertyRegDataType, PropertyBuffer, RequiredSize,
> &RequiredSize));
> But it still fails and the error code is 13, i.e. ERROR_INVALID_DATA.
> Can you please throw some light as to why this thing is happening.
>
> Thanks
> Pankaj
>
> ------------------------------
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> Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
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