Microsoft DirectX 9.0


This topic applies to Windows XP only.

The get_Category method retrieves the category of the device as a BSTR.


HRESULT get_Category(
  BSTR*  pGuid



[out]  BSTR that receives the device category.

Return Values

Returns an HRESULT value. Possible values include the following.

Value Description
S_OK Success.
E_POINTER NULL pointer argument.


The device category is identified by a GUID. This method returns a string representation of the GUID.

This method is provided for Automation clients. C++ applications can use the IMSVidDevice::get__Category method, which returns a GUID rather than a BSTR.

The caller must free the returned string, using the SysFreeString function.

See Also