Send a character to an inactive window?

[tempo 0]

I have a game running at the background and I'd like to send a character to it, like Send("1") or Send("5") but without making the window active.

I found out _SendMessage function but it sends some number, not a keystroke, can anyone please tell me how to do it?

[BigDod 505]

I think that you should read the rules pertaining to games and game automation.

[Valik 471]

Locked.