Cheat Engine

[TsTg]

any ideas how to add it to my game programmatically?, so that user can't minimize the game

one of the ideas i think about, is to create
a thread that calls SetForegroundWindow or SetActiveWindow constantly, but i guess this is not much effective, right?

[Dark Byte]

That might work, perhaps in combination with a check if it's already the focused windows or not, and only every few milliseconds instead of constantly.

Also, expect extremely bad reviews about your game if you do that. (It was already bad behavior in 2004 with doom3, but these days you'll get burned on the stake for it)

Why do you need to do that anyway ? The average user will be pissed of because he can't properly use skype, fraps, browser and other tools he/she might switch to during gameplay, and an experienced cheat maker will just disable it or use network scanning from another system, to create a trainer, and give that to other people so they don't even have to alt tab

[TsTg]

i'm just getting info about this, not making a game actually, but i saw some games that doesn't check for the window focus or even forcing it as foreground (as you said it's easy to be evaded or disabled), so games does something that makes the window never listens to the two key presses somehow, how would this be done?

[Dark Byte]

Could be the old DirectInput8 with an exclusive lock and they forgot to forward those unhandled keys

[atom0s]

Some ways I've dealt with in bypassing game protections:
- SetForegroundWindow / GetForegroundWindow
- SetFocus / GetFocus
- SetWindowPos
- IsIconic
- GetWindowRect
- GetWindowLongPtr / SetWindowLongPtr
- SetWindowsHook / SetWindowsHookEx

If you plan to force fullscreen mode and are using Direct3D, if you do not need to ever call Reset you can use that to track when the device is lost (typically from alt+tab) and kill the game then too.