I just put an instance of TGlyph on a FMX Form and tested this code.
procedure TForm1.FormCreate(Sender: TObject);
procedure TForm1.myClick(Sender: TObject);
Nothing happening when I click the glyph. I know that there is no OnClick event for TGlyph in the Designer IDE. But this TGlyph has derived from TControl which has OnClick. I know that I can use TImage instead of TGlyph but I am just curiuse about that.