Gamepad doesn't stay bound to game window when it loses focus

Hello! First off, great game. Not sure if this is a bug or a feature request but when running the game in window mode on a second display, and then switching focus to a different window, the gamepad does not stay bound to the game. Instead button presses appear to register for a few seconds after focus is lost then it won't take input from the controller until the window has focus again. It would be great if the game "locked" or bound the input device so that it took input even if the window is not in focus (the simulation already runs when not in focus)

I apologize in advance if this is a config setting that I have missed.

 

AFAIK, this isn't possible due to Windows limitations.

 

While it certainly isn't possible to bind the keyboard and mouse, it should be possible to lock a game controller to the application by properly setting the dxinput cooperative level to DISCL_EXCLUSIVE | DISCL_BACKGROUND. I can think of a couple of examples such as the higan nes/snes emulator that can lock on to a game controller regardless of windows focus.

https://msdn.microsoft.com/en-us/library/windows/desktop/ee416848(v=vs.85).aspx