IBaseFilter::QueryVendorInfo method (strmif.h)

Article
02/22/2024

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The QueryVendorInfo method retrieves a string containing vendor information.

Syntax

HRESULT QueryVendorInfo(
  [out] LPWSTR *pVendorInfo
);

Parameters

[out] pVendorInfo

Address of a variable that receives a pointer to a wide-character string containing the vendor information.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_OK	Success.
E_NOTIMPL	Method is not supported.
E_POINTER	NULL pointer argument.

Remarks

This method is optional; filters are not required to support it.

If the method is supported, it uses the CoTaskMemAlloc function to allocate memory for the string. Call the CoTaskMemFree function to free the memory.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib