title: WPF: How to a define a custom control's look in designer?
body: <p>So I like the fact that the look of custom controls can be re-defined in generic.xaml so I'd like to create one. But my issue is, how do you initially DESIGN (using the designer) the look for the custom control? unlike a user control it doesn't have an attached xaml / designer window. So must do design it all in code?</p>