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CBasePin::Active

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Called by the CBaseFilter implementation when the state changes from stopped to either paused or running.

virtual HRESULT Active(void);

Parameters

None.

Return Values

Returns an HRESULT value. The default implementation returns NOERROR.

Remarks

Any class that requires notification of a change of state should override this member function. This is called when the filter owning the pin exits the State_Stopped state.

Note that the filter graph manager's internal state variable is not updated until after this member function returns, so testing the filter graph manager's state (directly or indirectly) from within this member function should be avoided.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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