interface is used by item monikers when they are bound to the objects they
When any container of objects uses item monikers to identify its objects, it
must define a naming scheme for those objects. The container's IOleItemContainer
implementation uses knowledge of that naming scheme to retrieve an object
given a particular name. Item monikers use the container's IOleItemContainer
implementation during binding.
When to Implement
You must implement IOleItemContainer
if you're a moniker provider handing out item monikers. Being a moniker
provider means handing out monikers that identify your objects to make them
accessible to moniker clients. You must use item monikers if the objects you're
identifying are contained within another object and can be individually identified
using a string.
The most common example of moniker providers are OLE applications that support
linking. If your OLE application supports linking to objects smaller than a
file-based documents, you need to use item monikers. For a server application
that allows linking to a portion of a document (such as selections within a
document), you use the item monikers to identify those objects. For a container
application that allows linking to embedded objects, you use the item monikers to
identify the embedded objects.
You must define a naming scheme for identifying the objects within the
container; for example, embedded objects in a document could be identified with names
of the form "embedobj1," "embedobj2," and so forth, while ranges of cells in a
spreadsheet could be identified with names of the form "A1:E7," "G5:M9," and so
forth. (Ranges of cells in a spreadsheet are examples of as "pseudo-objects"
because they do not have their own persistent storage, they simply represent a
portion of the container's internal state.) You create an item moniker that
represents an object's name using the CreateItemMoniker
API function and hand it out to a moniker client. When an item moniker is
bound, your implementation of IOleItemContainer
must be able to take a name and retrieve the corresponding object.
When to Use
Applications typically do not call IOleItemContainer
methods directly. The item moniker implementation of IMoniker
is the primary caller of IOleItemContainer
Methods in VTable Order
||Returns pointers to supported interfaces.
||Increments the reference count.
||Decrements the reference count.
||Enumerates objects in a container.
||Keeps container running until explicitly released.
||Returns a pointer to a specified object.
||Returns a pointer to an object's storage.
||Checks whether an object is running.
, IMoniker Item Moniker Implementation
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