The Rules Explorer Window is a Visio anchor window, for which there are many examples available, including some in the Microsoft Visio SDK. The resultant window is a sub-window of the document window, just like a number of other built-in windows like the Drawing Explorer, Shape Data window, and of course, the new Issues window. These windows can float free, anchored to an edge of the drawing window, or merged with other sub-windows.
The following screenshot of Visual Studio shows that the
FormExplorer class merely acts as a host for the
UserControlExplorer is the WPF control that ...