CBaseOutputPin.Active method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Active method notifies the pin that the filter is now active.
Syntax
HRESULT Active();
Parameters
This method has no parameters.
Return value
Returns an HRESULT value. Possible values include those listed in the following table.
| Return code | Description |
|---|---|
|
Success. |
|
No allocator is available. |
Remarks
This method overrides the CBasePin::Active method. It calls the IMemAllocator::Commit method on the allocator, to allocate memory for buffers.
If you override this method, call the base-class method from your overriding method.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also
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