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IMediaEvent::FreeEventParams (Compact 2013)

  • [アーティクル]

3/26/2014

This method frees resources associated with the parameters of an event.

Syntax

HRESULT FreeEventParams(
  long lEventCode,
  long lParam1,
  long lParam2
);

Parameters

  • lEventCode
    [in] Next event notification.
  • lParam1
    [in] First parameter of the event.
  • lParam2
    [in] Second parameter of the event.

Return Value

Returns an HRESULT value.

Remarks

Event parameters can be of type LONG or BSTR. If a BSTR is passed as an event, it will have been allocated by the task allocator and should be freed using this method. No reference-counted interfaces are passed to an application using IMediaEvent::GetEvent because these cannot be overridden by IMediaEvent::CancelDefaultHandling. Therefore, this method is not used to release interfaces.

Requirements

Header

dshow.h

Library

Strmiids.lib

See Also

Reference

IMediaEvent Interface