This is example of an internal frame. (Old code does not work in JavaFX 1.3)

200.39.8.121 15:13, August 18, 2011 (UTC)

import javafx.ui.*; import javafx.ui.canvas.*; import javafx.ui.filter.*; import java.lang.Math;

class Wind {

 attribute angle:Number;
 attribute sAngle:Number;
 attribute tAngle:Number;
 public operation setAngle(nAngle:Number);
 public operation zero();
 public operation random();

}

operation Wind.setAngle(nAngle) {

 tAngle = nAngle;
 sAngle = angle;
 angle = [sAngle..tAngle] dur Math.abs(tAngle-sAngle)*2 linear;

}

operation Wind.zero() {

 setAngle(0);

}

operation Wind.random() {

 setAngle((Math.random()*360).intValue());

}

class Windsign extends CompositeNode {

 attribute wind:Wind;

}

function Windsign.composeNode() =

 Group {
   var x = 50
   var y = 50transform: bind translate(x, y),
   onMouseDragged: operation(e) {
     x += e.localDragTranslation.x;
     y += e.localDragTranslation.y;
   }
   toolTipText: "You can totally drag me around!",
   content: [
     Circle {
       cursor: HAND,
       cx: 50,
       cy: 50,
       radius: 50,
       fill: cyan,
       stroke: blue,
       strokeWidth: 2,
     },
     Polygon {
       points: [50,0,
         55,98,
         50,95,
         45,98]
       fill: darkblue
       transform: bind rotate(wind.angle,50,50)
     }
   ]
 };
 Frame{
   var wind = Wind {}
   var ws = Windsign { wind:wind }
   title:"Windsign"
   background: white
   visible:true
   content:
     BorderPanel {
       top: FlowPanel {
         background: white,
         content: [
           Slider {
             min: 0,
             max: 360,
             minorTickSpacing: 15,
             majorTickSpacing: 45,
             paintTicks: true,
             value: bind wind.angle,
           },
           Button {
             text: "Zero",
             action: operation() {
               wind.zero();
             }
           },
           Button {
             text: "Random",
             action: operation() {
               wind.random();
             }
           }
         ]
       }
       center: Canvas {
         background: white
         content:ws
       }
     }
   }