| flags | The glyph loading flag that should be used to load the glyph. |
| glyph | The glyph using the provided index or the .notdef glyph (index 0) if no glyph was found at that index. |
| unicode | The Unicode value of the character whose glyph should be loaded. |
bool Returns true if a glyph exists for the given unicode value. Otherwise returns false.
Try loading a glyph for the given unicode value. If available, populates the glyph and returns true. Otherwise returns false and populates the glyph with the .notdef / missing glyph data.