Special characters (like: ž,č,ť,ý,á,ä,ľ...) to SendKeyboard

Hello. I have a problem with sending characters such as: ľ,č,ť,ž,ý,á,ä,ô … to the system via SendKeyboard. I need to send them via character not via code. Or I would need to send whole sentences to the system.
Does anyone know how to do this?