Wraps TTF_GlyphMetrics to the metrics of a glyph in the dsdl2.ttf.Font
wchar glyph to get the metrics of
dsdl2.ttf.GlyphMetrics of the glyph
dsdl.SDLException if unable to get glyph metrics
See Implementation
Wraps TTF_GlyphMetrics to the metrics of a glyph in the dsdl2.ttf.Font