# IOleInPlaceUIWindow

The IOleInPlaceUIWindow interface is implemented by container applications and used by object applications to negotiate border space on the document or frame window. The container provides a RECT structure in which the object can place toolbars and other similar controls, determines if tools can in fact be installed around the object's window frame, allocates space for the border, and establishes a communication channel between the object and each frame and document window.

The document window may not exist in all applications. When this is the case, IOleInPlaceSite::GetWindowContext returns NULL for IOleInPlaceUIWindow.

##### When to Implement

You must implement this interface if you are writing a container application that will participate in in-place activation.

##### When to Use

Used by object applications to negotiate border space on the document or frame window when one of its objects is being activated, or to renegotiate border space if the size of the object changes.

Methods in VTable Order

IUnknown Methods | Description
QueryInterface | Returns a pointer to a specified interface.
AddRef | Increments the reference count.
Release | Decrements the reference count.

IOleWindow Methods | Description
GetWindow | Gets a window handle.
ContextSensitiveHelp | Controls enabling of context-sensitive help.

IOleInPlaceUIWindow Methods | Description
GetBorder | Specifies a RECT structure for toolbars and controls.
RequestBorderSpace | Determines if tools can be installed around object's window frame.
SetBorderSpace | Allocates space for the border.
SetActiveObject | Provides for direct communication between the object and each document and frame window.

See Also

IOleWindow