IOleItemContainer

Windows Mobile 6.5
A version of this page is also available for
4/8/2010

This interface is used by item monikers when they are bound to the objects they identify.

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.

You must implement IOleItemContainer if you are 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 are 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 document, 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 pseudo-objects because they do not have their own persistent storage, but simply represent a portion of the container's internal state.)

You create an item moniker that represents an object's name using the CreateItemMoniker 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.

Applications typically do not call IOleItemContainer methods directly. The item moniker implementation of the IMoniker interface is the primary caller of IOleItemContainer methods.

The following table shows the methods for this interface in the order that the compiler calls the methods. Like all COM interfaces, this interface inherits the methods for the IUnknown interface.

IUnknown method Description

QueryInterface

Returns pointers to supported interfaces.

AddRef

Increments reference count.

Release

Decrements reference count.

IParseDisplayName method Description

ParseDisplayName

Parses object's display name to form moniker.

IOleContainer method Description

EnumObjects

Enumerates objects in a container.

LockContainer

Keeps container running until explicitly released.

IOleItemContainer method Description

GetObject

Returns a pointer to a specified object.

GetObjectStorage

Returns a pointer to an object's storage.

IsRunning

Checks whether an object is running.

To determine whether the platform supports this interface, see Determining Supported COM APIs.

HeaderOleidl.h, oleidl.idl
Libraryole32.lib, uuid.lib
Windows Embedded CEWindows CE 3.0 and later
Windows MobileWindows Mobile Version 5.0 and later

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