- Specifies the default view technology support. The root designer may return any type of object, but the object must be compatible with an adapter for the technology of the host. Hosting environments such as Visual Studio provide a way to plug in new view technology adapters. The default view object for the Windows Forms designer is a Control instance.
- Represents a mode in which the view object is passed directly to the development environment. The view object must implement any interfaces the development environment requires. The Visual Studio development environment supports view objects that are either an ActiveX control, active document, or an object that implements the IVsWindowPane interface that is available through the Visual Studio VSI (Visual Studio Integration) program. The Visual Studio development environment provides support for this view technology. Support for this view technology is not necessarily available in all development environments.
- Represents a mode in which a Windows Forms control object provides the display for the root designer. The designer host fills the development environment document window with the Windows Forms control.