interface is the principal means by which an embedded object provides basic
functionality to, and communicates with, its container.
When to Implement
An object application must implement this interface, along with at least IDataObject
, for each type of embedded object that it supports. Although this interface
contains 21 member functions, only three are both essential and nontrivial to
, and Close
. Six of the member functions are optional: SetExtent
, and GetMoniker
. The latter two member functions are useful mainly for enabling links to
When to Use
Call the methods of this interface to enable a container to communicate with
an embedded object. A container must call DoVerb to activate an embedded object,
SetHostNames to communicate the names of the container application and
container document, and Close to move an object from a running to a loaded state.
Calls to all other member functions are optional.
Methods in VTable Order
||Returns pointers to supported interfaces.
||Increments reference count.
||Decrements reference count.
||Informs object of its client site in container.
||Retrieves object's client site.
||Communicates names of container application and container document.
||Moves object from running to loaded state.
||Informs object of its moniker.
||Retrieves object's moniker.
||Initializes embedded object from selected data.
||Retrieves a data transfer object from the Clipboard.
||Invokes object to perform one of its enumerated actions ("verbs").
||Enumerates actions ("verbs") for an object.
||Updates an object.
||Checks if object is up to date.
||Returns an object's class identifier.
||Retrieves object's user-type name.
||Sets extent of object's display area.
||Retrieves extent of object's display area.
||Establishes advisory connection with object.
||Destroys advisory connection with object.
||Enumerates object's advisory connections.
||Retrieves status of object.
||Recommends color scheme to object application.
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