CBasePin::QueryInternalConnections (Compact 2013)
3/26/2014
Provides an array of pointers to IPin objects. These are the pins that this pin internally connects to.
Syntax
HRESULT QueryInternalConnections(
IPin** apPin,
ULONG* nPin
);
Parameters
- apPin
Array of IPin pointers.
- nPin
Upon input, indicates the number of channels; upon output, indicates the number of pins.
Return Value
Returns one of the following HRESULT values.
Value |
Description |
|---|---|
E_FAIL |
Undetermined failure. |
E_NOTIMPL |
The filter graph manager interprets E_NOTIMPL as meaning all input pins connect to all output pins. |
S_FALSE |
Insufficient number of channels; returns no pins in apPin. |
Remarks
This member function implements the IPin::QueryInternalConnections method but only to return E_NOTIMPL.
To provide mapping between specific input and output pins, override this.
The default implementation to return E_NOTIMPL implies that the caller can assume that all input pins feed all output pins.
Overriding this member function allows a filter to specify when it is a renderer for some of its input pins and not for others.
Requirements
Header |
dshow.h, |
Library |
ole32.lib, |