pango/pango-font.go
func AddFont(fontPath string) {
	path := (*C.uchar)(unsafe.Pointer(C.CString(fontPath)))
	C.addFont(path)
}
func AddFont(fontPath string) {
	path := (*C.uchar)(unsafe.Pointer(C.CString(fontPath)))
	C.addFont(path)
}
// AddFont adds the font to the configuration.