What GUI environment/toolkit is used by Acrobat programmers?

[RamonHerrera@adobeforums.com]

I have a GUI application that resembles Acrobat at first glance, to the point that people have suggested that it should have been developed as a set of plugins. Upon closer examination, however, one realizes that the similarity is only skin deep. To begin with, the files handled are not even PDF, they are TIFF files. I also have a palette that looks like Photoshop's.

In any event, I *really* like the look and feel of Acrobat, specially the floating and docking toolbars. I would like to request recommendations about any toolkit (commercial or otherwise, or perhaps Windows already provides all I need?) that allows me to exhibit such cool and professional looking behavior.

If there is a better newsgroup(s) to post this, I am glad to hear about them.

Thanks,

-RFH

ps: I hope Adobe won't sue me. :-)
pps: "Imitation is the sincerest form of flattery".

[Leonard_Rosenthol@adobeforums.com]

Adobe uses it's own internally developed libraries.