import flash.display.GraphicsPath;

var gp:GraphicsPath=new GraphicsPath();
gp.lineTo(100,0);
gp.lineTo(100,100);
gp.lineTo(0,100);
gp.lineTo(0,0);

gp.moveTo(25,25);
gp.lineTo(25,75);
gp.lineTo(75,75);
gp.lineTo(75,25);
gp.lineTo(25,25);

graphics.beginFill(0x00AAFF);
graphics.drawPath(gp.commands,gp.data,gp.winding);
graphics.endFill();