You can find many examples in sources of sdk
Answer is very simple: you should write meta information
about your component like this
In *.as file it's located before class code (you can see it
in sources), in *.mxml in tag
<mx:Metadata></mx:Metadata> as the first child.
"The Bruder" <firstname.lastname@example.org> wrote in
> Hi Guys,
> Simple question, hope the solution will be also quick
> I just made my perfect custom component and want to show
icon on the
> flexbuilder design mode list and ALSO show my icon when
i drag it in to
> design mode stage.
> Does anyone know how to do it or have example it it?