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 End-User Documentation

BaseView.CustomDocumentsHostWindow Event

Fired before a host container for floating documents is created, allowing you to create your own custom floating document container.

Namespace:DevExpress.XtraBars.Docking2010.Views
Assembly:DevExpress.XtraBars.v17.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type DevExpress.XtraBars.Docking2010.CustomDocumentsHostWindowEventArgs containing data related to this event.

Expanded Remarks

Floating DocumentManager's documents can be hosted either separately (each one in its own container) or in a specific documents host, where other floating documents can be docked. The way floating documents are hosted is specified via the FloatingDocumentContainer property. In DocumentsHost mode, documents are displayed within a container that has its own DocumentManager component. Thus, all events related to floating documents are fired for this local DocumentManager rather than for the main DocumentManager component. If you need to handle these events, use the CustomDocumentsHostWindow property.

Note

Follow this link to download the complete sample.

First, add a new class to your solution by clicking the 'Add' -> 'New Item' pop-up menu item in Visual Studio's Solution Explorer or pressing the Ctrl+Shift+A shortcut. Inherit this class from the Form class and implement the IDocumentHostWindows interface for it.

Within your new class constructor, add your own DocumentManager component and subscribe to required events. In this example, the DocumentClosing event is handled.

Finally, subscribe to the main DocumentManager's CustomDocumentsHostWindow event and set your custom document host as a floating document container.

Since float containers are not a permanent storage for documents and your end-users can undock documents from a custom container and make them float, new float document containers can appear again and again. These new containers will be the default, not our custom containers, and so document events will be again be unreachable. To overcome this issue, handle the CustomDocumentsHostWindow event for your custom container and return this container as its own custom document container. When it is done, undocking a Document from a custom container will create another custom container, which already handles required events.

Expanded See Also

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