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                      SDLHack

     http://www.jspenguin.org/software/sdlhack/     
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This is a simple LD_PRELOAD wrapper for SDL which enables switching
away from a fullscreen game. 

To install it on x86 and amd64, run:

sudo ./install.sh


To start a game from the command line, run:

sdlhack GAME

e.g. sdlhack /usr/games/PenumbraOverture/penumbra


You can also edit the game's menu entry or desktop icon to run
sdlhack. Simply add 'sdlhack' to the beginning of the the command line
field. 


If you want to switch away while in the game, pause it and press
Ctrl-Z to minimize the game window.  If you don't pause, the
game may continue to run in the background.

You can set the trigger key with the -k option, e.g.

sdlhack -k ctrl-alt-shift-q GAME

You may also use sdlhack to disable joystick detection. Some systems
incorrectly detect a joystick on startup when one is not present which
can affect gameplay. To disable the joystick, run:

sdlhack -d GAME

To save defaults in ~/.sdlhackrc, use the -s option, e.g.

sdlhack -s -k alt-tab

To uninstall, simply delete /usr/bin/sdlhack, /usr/lib/libsdlhack.so,
/usr/lib32/libsdlhack.so, and /usr/lib64/libsdlhack.so.