interface methods allow an application to obtain the handle to the various
windows that participate in in-place activation, and also to enter and exit
context-sensitive help mode.
Five other in-place activation interfaces are derived from the IOleWindow
interface. Containers and objects must implement and use these six interfaces
in order to support in-place activation. The following table briefly
summarizes each of these interfaces:
||The base interface. Implemented and used by containers and objects to window
handles and manage context-sensitive help.
||Implemented by objects and used by an object's immediate container to activate
and deactivate the object.
||Implemented by objects and used by the top-level container to manipulate the
object while it is active. Provides a direct channel of communication between an
active object and its frame and document windows.
||Implemented by containers and used by objects to manipulate the container's
||Implemented by containers and used by objects to control the container's frame
||Implemented by containers and used by objects to interact with the in-place
These interfaces can be arranged in three hierarchical levels with various
interfaces implemented at each level. Calls that install user-interface menus and
frame adornments, activate and switch between windows, and dispatch menu and
keystrokes take place between the top-level container and the active object.
Calls that support activating, deactivating, scrolling, or clipping span the
containment hierarchy, with each level performing the correct actions.
When to Implement
The inherited methods of this interface are implemented by all in-place
objects and containers.
When to Use
Use this interface to obtain the window handle to the windows associated with
in-place activation (frame, document, parent, and in-place object). It is also
used to enter and exit context-sensitive help.
Methods in VTable Order
||Returns a pointer to a specified interface.
||Increments the reference count.
||Decrements the reference count.
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