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Raised by the network source when it starts opening a URL.
Event values
Possible values retrieved from IMFMediaEvent::GetValue include the following.
| VARTYPE | Description |
|---|---|
| VT_EMPTY |
No event data. |
Remarks
The network source sends this event directly to the application through the application's IMFSourceOpenMonitor::OnSourceEvent method, not through the usual IMFMediaEventGenerator interface.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |
| Header |
|
See also