GUI update

I've been making some more progress with my OpenGL based GUI. I got the Textbox control to properly handle unicode characters though I couldn't make tildes to work yet. I'm guessing that maybe it won't be possible with SDL and I'm gonna have to do it char by char myself (which would suck).

I also finished coding the ScrollBars, added a Mouse Over effect to buttons and also the possibility to add a centered image to buttons (I needed it for the ScrollBar arrows).

Now I'm going for the ListView. After I finish it ComboBox will be a walk in the park. And I think that will be it for now. With those controls I'll be ready to begin working on tools to edit Models and Levels. Once I get that up, the only thing that is left is the game itself.

Some pictar: