A wxGraphicsFont is a native representation of a font. The contents are specific and private to the respective renderer. Instances are ref counted and can therefore be assigned as usual. The only way to get a valid instance is via wxGraphicsContext:createFont/4 or wxGraphicsRenderer:createFont/4.
This class is derived (and can use functions) from: wxGraphicsObject
wxWidgets docs: wxGraphicsFont
wxGraphicsFont() = wx:wx_object()