I submitted this because my feeling about UI programming is that I'm missing some sort of theory/language/spec for describing what I want and what the APIs can

I submitted this because my feeling about UI programming is that I'm missing some sort of theory/language/spec for describing what I want and what the APIs can give me. I don't know if that's a failure of my education, or if it's just not out there, but I always feel like I'm guessing what a given API call or widget will do. With other areas of programming, I make plenty of mistakes, but they're because I ignored a case, or misread documentation, or didn't think through how an algorithm would function.