keyboard - game(directx) doesn't react on c++ keybd_event -

i need solving 1 thing.

i write fun 1 project take control of hugo game, want simulate keyboard in it. despite simulating keyboard in c++ easy thing, don't know why hugo doesn't react.

when simulate keyb_event:

keybd_event(vk_left, 0, 0, 0); keybd_event(vk_left, 0, keyeventf_keyup, 0); 

as when send sendinput:

input ip;  ip.type = input_keyboard; ip.ki.wscan = 0; ip.ki.time = 0; ip.ki.dwextrainfo = 0; ip.ki.wvk = vk_right;  ip.ki.dwflags = 0; sendinput(1, &ip, sizeof(input));  ip.ki.dwflags = keyeventf_keyup; sendinput(1, &ip, sizeof(input)); 

or sendmessage:

sendmessage(hwnd, wm_keydown, vk_right, 0); sendmessage(hwnd, wm_keyup, vk_right, 0); 

in cases, in notepad, cursor moves correctly, hugo still doesn't react.

i checked getforegroundwindow , getclassname hugo correctly on foreground. forcing setfocus , setactivewindow didn't changed also.

i can't tell hugo, here know sure: it's old game, opens in full screen, catalog "directx" suggests written directx , know.

currently don't have more ideas, send keyboard press game. have clues?

it use directinput. try using scancode sendinput.

example:

input ip = {0};  ip.type = input_keyboard; ip.ki.wscan = 73; // left arrow ip.ki.dwflags = keyeventf_scancode; sendinput(1, &ip, sizeof(input)); // left arrow pressed  ip.ki.dwflags = keyeventf_keyup | keyeventf_scancode; sendinput(1, &ip, sizeof(input)); // left arrow released