[Lazarus] GTK 3.0

[Ondrej Pokorny]

I just took a quick look at your fpGUI Toolkit and I have to say I like 
it. At the first glance it seems to work very nicely. I especially like 
the idea that you have 100% control of the application.

I wasn't able to run fpgcanvas (runtime exception), nanoedit (didn't 
compile) and agg_canvas_test (runtime exception) demos but docedit and 
helloword worked.

How do you handle high-DPI displays in fpGUI?

Ondrej