   Developing good looking multi-touch UIs for applications
  I'm looking for a SDK or whatever to develop good looking user interfaces for applications including the possibility to develop custom components.Currently I'm with Flash but I'm not very satisfied.The applications shall run on Windows 7 and be controlled via a 23" Dualtouch-LCD monitor or a 48" Multitouch LCD screen (the latter one provides multi-touch data via its own server). I downloaded the Unreal Development Kit, but it looks like its also not suited for that purpose.Do you have any other ideas?   
Qt.You can create custom components, and multitouch support was recently added.;  Qt.I haven't tried the multitouch stuff (and won't), but as for good looking and custom controls, plus a liberal license, I heavily propose Qt (e.g., in picogen [see below and here] I have a Tristimulus Colour Picker project, a Spectral Colour project, a generalized Colour Picker project which integrates the former, and a GUI for picogen, which of course makes good use of the Colour widget. It's all fine :)   ;  Oh that is a very good suggestion.I wanted to learn QT anyways.Thanks a lot.   ;  I would check out WPF and .NET Framework 4.0.WPF is hands down the best framework I've ever used for user interface programming.  .NET 4.0 adds first class support for multitouch into WPF.