IMediaEvent::CancelDefaultHandling method (control.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 CancelDefaultHandling method cancels the Filter Graph Manager's default handling for a specified event. The event notification is passed to the application.
Syntax
HRESULT CancelDefaultHandling(
long lEvCode
);
Parameters
lEvCode
Event code for which to cancel default handling.
Return value
Returns an HRESULT value. Possible values include those shown in the following table.
| Return code | Description |
|---|---|
|
Success. |
|
No default handling for this event. |
Remarks
To restore the default handling for an event, call the IMediaEvent::RestoreDefaultHandling method with the 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 |