CMediaControl.GetTypeInfoCount method

  • Article

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

Retrieves the number of type-information interfaces provided by an object.

Syntax

HRESULT GetTypeInfoCount(
   UINT *pctinfo
);

Parameters

pctinfo

Pointer to the number of type-information interfaces that the object provides. If the object provides type information, this number is 1; otherwise, the number is 0.

Return value

Returns E_POINTER if pctinfo is invalid; otherwise, returns S_OK.

Requirements

Requirement Value
Header
Ctlutil.h (include Streams.h)
Library
Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CMediaControl Class