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IPinFlowControl interface (strmif.h)

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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

Blocks data flow from an active output pin. This interface is exposed by output pins that can reconnect dynamically. Use this interface to start a dynamic reconnection within the filter graph. For more information, see Dynamic Graph Building.

Filter developers: Parser and capture filters that support dynamic reconnection should support this interface on their output pins. Generally, other types of filters do not need to implement this interface.

Inheritance

The IPinFlowControl interface inherits from the IUnknown interface. IPinFlowControl also has these types of members:

Methods

The IPinFlowControl interface has these methods.

 
IPinFlowControl::Block

The Block method blocks or unblocks the flow of data from the pin.

Requirements

Requirement Value
Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)