CBasePin::Active
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4/8/2010
Called by the CBaseFilter implementation when the state changes from stopped to paused or running.
Syntax
virtual HRESULT Active(void);
Parameters
None.
Return Value
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.
The filter graph manager's internal state variable is not updated until after this member function returns, so avoid testing the filter graph manager's state (directly or indirectly) from within this member function.
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later |