EC_LOADSTATUS
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Notifies the application of progress when opening a network file.
Parameters
-
lParam1
-
Status code. See Remarks.
-
lParam2
-
Zero.
Default Action
None.
Remarks
The WM ASF Reader filter and the legacy Windows Media Source filter send this event. The first event parameter has one of the following values.
| Value | Description |
|---|---|
| AM_LOADSTATUS_CLOSED | The source filter has closed the file. |
| AM_LOADSTATUS_CONNECTING | The source filter is connecting to the server. |
| AM_LOADSTATUS_LOADINGDESCR | Not used. |
| AM_LOADSTATUS_LOADINGMCAST | Not used |
| AM_LOADSTATUS_LOCATING | The source filter is locating requested data. |
| AM_LOADSTATUS_OPEN | The source filter has opened the file. |
| AM_LOADSTATUS_OPENING | The source filter is opening the file. |
Requirements
| Requirement | Value |
|---|---|
| Header |
|