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 >

Parameters

• 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.

Members

Public Methods

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.

Public Data Members

Name	Description
IConnectionPointImpl::m_vec	Manages the connections for the connection point.

Remarks

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.

Inheritance Hierarchy

_ICPLocator

IConnectionPointImpl

Requirements

Header: atlcom.h

See Also

Reference

IConnectionPoint

Other Resources

ATL Class Overview