Warning, /education/gcompris/external/qml-box2d/examples/shared/ScreenBoundaries.qml is written in an unsupported language. File is not indexed.

 import Box2D 2.0
 
 /*
   This body places 32-pixel wide invisible static bodies around the screen,
   to avoid stuff getting out.
 */
 Body {
     world: physicsWorld
 
     Box {
         y: screen.height
         width: screen.width
         height: 32
     }
     Box {
         y: -32
         height: 32
         width: screen.width
     }
     Box {
         x: -32
         width: 32
         height: screen.height
     }
     Box {
         x: screen.width
         width: 32
         height: screen.height
     }
 }