Pro WPF in C# 2010: Windows Presentation Foundation in .NET 4

30.3. Creating Windows with Mixed Content

In some cases the clean window-by-window separation isn't suitable. For example, you might want to place WPF content in an existing form alongside Windows Form content. Although this model is conceptually messier, WPF handles it quite gracefully.

In fact, including Windows Forms content in a WPF application (or vice versa) is more straightforward than adding ActiveX content to a Windows Forms application. In the latter scenario, Visual Studio must generate a wrapper class that sits between the ActiveX control and your code, which manages the transition from managed to unmanaged code. This wrapper is component-specific, which means each ActiveX control you use requires a separate customized wrapper. And ...