CBaseFilter.GetPin 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetPin method retrieves a pin. The CEnumPins class calls this method to enumerate pins on the filter.
Syntax
virtual CBasePin* GetPin(
int n
) = 0;
Parameters
-
n
-
The zero-based index of the pin.
Return value
Returns a pointer to the CBasePin object that implements the pin.
Remarks
You must implement this pure virtual method in your derived class. Return a pointer to the nth pin on this filter, indexed from zero. You can choose an arbitrary indexing order, as long as the ordering is fixed. If the filter adds or deletes pins, or the ordering changes for some other reason at run time, call the CBaseFilter::IncrementPinVersion method.
Requirements
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| Library |
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