In a lot of games you have to pan your camera by moving your mouse to the side of your screen. If you have a second monitor that is showing your desktop the cursor will just leave the game window which means you won't be able to pan your camera to that side. Is there a way to toggle the ability to "lock" your mouse in one window?
Like say you have to hold control while moving the mouse to be able to leave the window, or have to press something like control shift to toggle the ability to move from one window to the next?
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That depends on the game. Games that are properly made constrain the mouse to a single screen, so moving to the right edge will scroll or whatever, and the mouse will never move to the second screen.
Games that had s****y programmers do not constrain the mouse, which makes it easy to leave the screen when you move the mouse to the edge. The worst offender I've played was Stubbs the Zombie - a FPS that didn't constrain the mouse. Any time you turned right, the mouse would move to the second monitor, and as soon as you'd click to fire, it would drop you out of the game since you clicked outside the game window.
Bottom line is, most games *should* keep you mouse constrained properly, but it's totally on a game-by-game basis.
EDIT: Just read more clearly what you're asking... there's no way to *toggle* constraint usually. Whether it's constrained or not just depends on how the game was programmed.
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