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CBaseControlVideo.CBaseControlVideo constructor

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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

Constructor method.

Syntax

CBaseControlVideo(
   CBaseFilter *pFilter,
   CCritSec    *pInterfaceLock,
   TCHAR       *pName,
   LPUNKNOWN   pUnk,
   HRESULT     *phr
);

Parameters

pFilter

Pointer to the owning media filter object.

pInterfaceLock

Pointer to the critical section to use for locking.

pName

Pointer to the object description.

pUnk

Pointer to the controlling IUnknown interface, if the object is part of an aggregate; otherwise, must be NULL.

phr

Pointer to a variable that receives an HRESULT value indicating the success or failure of the constructor method.

Remarks

The object implements the IBasicVideo control interface.

All the interface methods from IBasicVideo that this class implements require that the filter be connected correctly. For this reason, the class is passed a pin with which it should synchronize with. Whenever an interface method is called, the object determines that the pin is still connected.

Requirements

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

See also

CBaseControlVideo Class