Wraps TTF_SizeUNICODE to get the size of a rendered text in the dsdl2.ttf.Font
rendered wstring text to get the size of
the size of the rendered text (width and height)
dsdl.SDLException if unable to get text size
See Implementation
Wraps TTF_SizeUNICODE to get the size of a rendered text in the dsdl2.ttf.Font