An acceptable cross-platform GUI toolkit?
statictype: If you're really picky about the look-and-feel on each platform, just bite the bullet and write 3 front-ends.If you want something that looks reasonably good on major platforms, go with Qt or wx.There are a couple more options you have:XULRunner: I like this option because of the flexibility you get in creating UIs using markup and styles. You can get XULRunner built with Python support so you don't have to resort to C++. And you get a reasonably powerful rendering engine to boot.Adobe Air: Never used this so I can't say anything for sure but from what I've heard, its similar to XULRunner but uses WebKit and a lot of Flash. It is, however, proprietary.And,If you're going to do a new UI toolkit, great. Just make sure you know 
a) why wxWidgets didn't accomplish this for you
b) How you plan on addressing those shortcomings.I believe wxWidgets was supposed to address the issue you raised about giving the native look and feel on each platform independently. It uses GTK on Linux and Win32 on Windows. No idea about how it works on OS X but I assumed it would use Cocoa\Aqua\whatever. Is that not the case?