I tried to search the internet for examples for doing that, but can not find a good one. Also I checking eclipse IDE source code, but it's a bit too big to filter out what I need for an example.
What I would need is something similar to Eclipse File Association page below.
My plan is later to replace File types list with a combo and add more values/controls per combo selection.
I would be very thankful for an example or a link to an example that does that or has a same concept with working preference store.
Thank you!