EC_BUFFERING_DATA
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 graph is buffering data, or has stopped buffering data.
Parameters
-
lParam1
-
(BOOL) TRUE if the graph is starting to buffer, or FALSE if the graph has stopped buffering.
-
lParam2
-
Zero.
Default Action
None.
Remarks
A filter can send this event if it needs to buffer data from an external source. (For example, it might be loading data from a network.) The application can use this event to adjust its user interface.
Requirements
| Requirement | Value |
|---|---|
| Header |
|