Re: SetupDiGetDeviceRegistryProperty - Usb - Address - Busnumber

Hi, thanks at all how helped me.
The answer regarding the last problem I had comes here:
Because every HID device consists of a parent hid and a child hid, I have
first to read for the parent hid in order to ask for the parent of the parent
hid. :-)



"Bernhard" wrote:

Are all CM API's available in VISTA? The software should works proper with
WindowsXp and Vista.

Best regards,
Bernhard
"Doron Holan [MSFT]" wrote:

you can use the CM APIs to find the parent DEVINST of both the HID and the
CDC device and see if it returns the same DEVINST

d

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"Bernhard" <Bernhard@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:BA90CAC6-95CB-49DA-B19D-59B6BA8ADD8A@xxxxxxxxxxxxxxxx
To find the hid device I used the HID Guid, but I want also to find the
CDC
device on the same composite device. Is it possible to readout the
parent-id
of both devices?

Thanks

"Doron Holan [MSFT]" wrote:

if you wat to find HIDs, use the HID device interface GUID.

d

--
Please do not send e-mail directly to this alias. this alias is for
newsgroup purposes only.
This posting is provided "AS IS" with no warranties, and confers no
rights.


"Bernhard" <Bernhard@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:1FE371EF-AE77-4D0B-B3A3-B48E41C25F9B@xxxxxxxxxxxxxxxx
Hi I got only USB\Vid_0a91&Pid_3801&MI_00 this information and nothing
about
the parent.
I tried also to get all devices within the usb class and than to
enumerate
if they have a HID interface. But it doesnt works. Every of my
composite
devices have one hid and one cdc interface.

hDevInfo = SetupDiGetClassDevs(&compositeGuid,
NULL, // Enumerator
NULL,
DIGCF_PRESENT);

and than

for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i,
&DeviceInfoData);i++)
{
..
..
for(j=0;j<2;j++)
{
if(TRUE != SetupDiEnumDeviceInterfaces(hDevInfo,
&DeviceInfoData,

&hidGuid,
j, &hidDeviceInterfaceData))
err = GetLastError();
}



"Tim Roberts" wrote:

Bernhard <Bernhard@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

I have several composite devices which are equal running on a pc.
My problem is, I want to find out which interfaces belong together
(to
the
same composite device). In order to find out if two interfaces are
form
a
composite device, i want to read out the address and busnumber and
compare
both.

"Address" and "bus number" have no meaning for USB devices. Only PCI.

If equal than these two devices are on the same composite device.
The problem is, the API call "SetupDiGetDeviceRegistryProperty"
returns
only
a string with 4 spaces. I got no address or busnumber.
I work with Windows Xp .

I will appreciate every help. Thanks

if(TRUE == SetupDiGetDeviceRegistryProperty(
hDevInfo,
&DeviceInfoData,
SPDRP_ADDRESS,
&DataT,
buffer,
buffersize,
&buffersize))

Is that the only property you tried? Where's your imagination?
SPDRP_HARDWAREID should tell you what you need to know. For example,
USB\Vid_0a91&Pid_3801&MI_00\7&2603ea26&0&0000
and
USB\Vid_0a91&Pid_3801&MI_01\7&2603ea26&0&0001
are both interfaces on the same device.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.





.

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