I have a custom component I created in Catalyst (called WebHeader), then extracted the contents and linked to my Builder project, as described by Marc Hughes here:
I want to add code to this component so I must create a new class which extends WebHeader (so I don't lose that coding work when I get an updated version of WebHeader). I created CodeWebHeader, which extends WebHeader. Both components show up in my custom component list in Builder when in design view.
I can drag WebHeader onto the design area and see it, but when I drag CodeWebHeader onto the design area all I see is an empty square. When I run the project, I can see both components.
Is there something I have to do to be able to see my extended custom component in the Design View?
There currently isn't a generally available way to extend Builder's design view. It is something that we've considered adding as a feature, though, so I'd be glad to hear more about how you would use this. Drop me a note directly and we can discuss. It's buntel at adobe dot com.