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SystemTS Interface IUnknown

Usage: you can freely reimplement this interface.

interface IUnknown

Base interface for all CAA interfaces.
Role: All CAA interfaces derive from IUnknown which replaces for UNIX the native Microsoft(R) IUnknown interface. This interface supplies the three basic methods , and to be COM (Microsoft(R) Component Object Model) compliant.

Method Index

o AddRef(): Increments the reference count for the given interface.
o QueryInterface(IID&,void**): Returns a pointer to a given interface.
o Release(): Decrements the reference count for the given interface.

Methods

o AddRef

public virtual AddRef(

)

Increments the reference count for the given interface.

Returns:: The reference count value.
This information is meant to be used for diagnostic/testing purposes only, because, in certain situations, the value may be unstable.

o QueryInterface

public virtual QueryInterface(	const	`iIID`,
		`oPPV`)

Returns a pointer to a given interface.

Parameters:

iIID: The interface identifier for which a pointer is requested.
oPPV: The address where the returned pointer to the interface is located.

Returns:

S_OK: If the query succeeds
E_NOINTERFACE: If the interface does not exist
Other: If the query fails for any other reason.

o Release

public virtual Release(

)

Decrements the reference count for the given interface.

Returns:: The reference count value.
This information is meant to be used for diagnostic/testing purposes only, because, in certain situations, the value may be unstable.

This object is included in the file: IUnknown.h