IMediaParamInfo::GetParamInfo method (medparam.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetParamInfo method retrieves information about a specified parameter.

Syntax

HRESULT GetParamInfo(
  [in]  DWORD        dwParamIndex,
  [out] MP_PARAMINFO *pInfo
);

Parameters

[in] dwParamIndex

Zero-based index of the parameter.

[out] pInfo

Pointer to an MP_PARAMINFO structure that is filled with the parameter information.

Return value

Returns an HRESULT value. Possible values include the following.

Remarks

Call the GetParamCount method to retrieve the number of parameters that the object supports.

Requirements

See also

IMediaParamInfo Interface