gistfile1.js

var theWindow = [[CPWindow alloc]
    initWithContentRect:CGRectMakeZero()
    styleMask:CPBorderlessBridgeWindowMask
  ];
  
  _contentView = [theWindow contentView];
  
  var bounds = [_contentView bounds];
  var boxSideLength = 10;
  var boxMargin = 10;
  
  var boxX = CPRectGetWidth(bounds) - boxMargin - boxSideLength;
  var boxY = CPRectGetHeight(bounds) - boxMargin - boxSideLength;
  
  var box = [[CPView alloc] initWithFrame:CPRectMake(boxX, boxY, boxSideLength, boxSideLength)];
  [box setBackgroundColor:[CPColor blackColor]];
  
  [box setAutoresizingMask:CPViewMinXMargin|CPViewMinYMargin];
  
  [_contentView addSubview:box];
  
  [theWindow orderFront:self];