IMediaEvent::RestoreDefaultHandling method (control.h)

Article
02/22/2024

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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

The RestoreDefaultHandling method restores the Filter Graph Manager's default handling for a specified event.

Syntax

HRESULT RestoreDefaultHandling(
  [in] long lEvCode
);

Parameters

[in] lEvCode

Event code for which to restore default handling.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_OK	Success.
E_INVALIDARG	No default handling for this event.

Remarks

By default, the Filter Graph Manager handles some events (such as EC_REPAINT) without passing them to the application. If you call the IMediaEvent::CancelDefaultHandling method to override the default handling for an event, you can restore the default behavior by calling RestoreDefaultHandling with the same event code.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	control.h (include Dshow.h)
Library	Strmiids.lib