Returns the geometry of the usable region of a screen.
capi
screen-internal-geometry screen => x , y , width , height
screen-internal-geometry
screen
A screen.
x
An integer.
y
width
height
The function screen-internal-geometry returns the geometry (as x , y , width and height ) of the part of the screen that can be used to display windows. This region excludes any borders, the Mac OS X dock, and so on.