Export (0) Print
Expand All

IConnectionPointImpl Class

This class implements a connection point.

template< 
   class T, 
   const IID* piid, 
   class CDV = CComDynamicUnkArray  
> 
class ATL_NO_VTABLE IConnectionPointImpl : 
   public _ICPLocator< piid >

T

Your class, derived from IConnectionPointImpl.

piid

A pointer to the IID of the interface represented by the connection point object.

CDV

A class that manages the connections. The default value is CComDynamicUnkArray, which allows unlimited connections. You can also use CComUnkArray, which specifies a fixed number of connections.

Name

Description

IConnectionPointImpl::Advise

Establishes a connection between the connection point and a sink.

IConnectionPointImpl::EnumConnections

Creates an enumerator to iterate through the connections for the connection point.

IConnectionPointImpl::GetConnectionInterface

Retrieves the IID of the interface represented by the connection point.

IConnectionPointImpl::GetConnectionPointContainer

Retrieves an interface pointer to the connectable object.

IConnectionPointImpl::Unadvise

Terminates a connection previously established through Advise.

Name

Description

IConnectionPointImpl::m_vec

Manages the connections for the connection point.

IConnectionPointImpl implements a connection point, which allows an object to expose an outgoing interface to the client. The client implements this interface on an object called a sink.

ATL uses IConnectionPointContainerImpl to implement the connectable object. Each connection point within the connectable object represents an outgoing interface, identified by piid. Class CDV manages the connections between the connection point and a sink. Each connection is uniquely identified by a "cookie."

For more information about using connection points in ATL, see the article Connection Points.

_ICPLocator

IConnectionPointImpl

Header: atlcom.h

Show:
© 2014 Microsoft