Well, my System here is currently a Mix of Both conventions. "Class"-Name as prefix(Camelcase), underscore, Methodname(CamelCase).

Like:

TBigWindow_DrawSomething(MyWindow);

Thought about this to keep a visual gap between the Structname and methodname.
Havent tried full Camelcase for this approach yet(no underscore).


Greets
Rackscha