C++ mouse/keyboard imitation in AA game?

Question

Qt

ArcheAge game, I want to automate some actions in the game, but SendMessage, SendInput, mouse_event, SetCursorPos, QCursor::setPos() don't work. or am I doing something wrong. In general, the question is how to simulate a message from the keyboard that is 100% indistinguishable from real ones.
I heard about directinput , I know that you can inject code, the same crazy option for writing a driver. I fully consider, but I did not find normal articles in Russian. there is little information about directinput, the code injection is too pale, so I didn’t work with it.
Are there any other alternatives?