ICollectionOnSTLImpl Class

This class provides methods used by a collection class.

template < 
   class T, 
   class CollType, 
   class ItemType, 
   class CopyItem, 
   class EnumType 
> 
class ICollectionOnSTLImpl : 
   public T

Parameters

• T
  A COM collection interface.

• CollType
  An STL container class.

• ItemType
  The type of item exposed by the container interface.

• CopyItem
  A copy policy class.

• EnumType
  A CComEnumOnSTL-compatible enumerator class.

Members

Public Methods

Name	Description
ICollectionOnSTLImpl::get__NewEnum	Returns an enumerator object for the collection.
ICollectionOnSTLImpl::get_Count	Returns the number of elements in the collection.
ICollectionOnSTLImpl::get_Item	Returns the requested item from the collection.

Public Data Members

Name	Description
ICollectionOnSTLImpl::m_coll	The collection.

Remarks

This class provides the implementation for three methods of a collection interface: get_Count, get_Item, and get__NewEnum.

To use this class:

• Define (or borrow) a collection interface that you wish to implement.

• Derive your class from a specialization of ICollectionOnSTLImpl based on this collection interface.

• Use your derived class to implement any methods from the collection interface not handled by ICollectionOnSTLImpl.

Note

If the collection interface is a dual interface, derive your class from IDispatchImpl, passing the ICollectionOnSTLImpl specialization as the first template parameter if you want ATL to provide the implementation of the IDispatch methods.

• Add items to the m_coll member to populate the collection.

For more information and examples, see ATL Collections and Enumerators.

Inheritance Hierarchy

T

ICollectionOnSTLImpl

Requirements

Header: atlcom.h

See Also

Concepts

ATLCollections Sample

Other Resources

ATL Class Overview