Program doesnt respont when i add canvas on enterFrame function

Question

Hello all!
I have been making a simple aplication and i have a problem i cannot find the solution (neither why it is happening)
The thing i want to do is to dynamically add a canvas containing a button to the application and then i want the canvas to be moved from the left side of screen to the right.
So i have made the following code
And it works just fine.
The next step is instead of using the Canvas i use a custom canvas ..
here is the CustomCanvas.mxml component
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300">
     <mx:Button label="ccccButton" />
</mx:Canvas>
then i change the following code line
      var ccanvas:Canvas = new Canvas()  
          to
      var ccanvas:CustomCanvas = new CustomCanvas();
the result is that there is no canvas displayed at the screen...the program doesn't do anything....
the most weird thing is that if i do not have an onEnterFrame function and i just add my custom canvas to the init() method it is been displayed properly. Even if i have an onEnterFrame but without changing the customCanvas's x value it is been displayed properly. But the moment i write in the
onEnterFunction the code  ccanvas.x +=1 the program doesnt display anything.... But if i do that with the original  Canvas object it is all ok,,,
What is happening here? how i can i make a custom canvas object and then be able to move it in a onEnterFrame method?
Thank you!!!!!!
PS...what is the tags for putting code in?  i used the plain tag ..i hope it can be readable

Answer 1

Unfortunately I dont know how to put a break point at that class which I have not write.
I made a similar code example :
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">
     <mx:Script>
          <![CDATA[
               import mx.controls.Button;
               import mx.containers.Canvas;
     //          var testCanvas1:Canvas = new Canvas();
               var testCanvas1:CustomCanvas = new CustomCanvas()
               public function init():void{
                    testCanvas1.addChild(new Button());
                    addEventListener(Event.ENTER_FRAME,onEnterFrame);
                    addChild(testCanvas1);
               public function onEnterFrame(event:Event):void{
                    testCanvas1.x += 1;
          ]]>
     </mx:Script>
</mx:Application>
As far as i have tried when instead of canvas i put the custom cunvas the program does not run. So the next step i did; is to remove the
<mx:Button id="ccccButton"/ > from the custom canvas file . And by suprise it works...
i tried adding again differnet kinds of mxml component to the the custom  canvas file  and after i added something it stopped work.
But if i have a custom canvas and i add whatever i want to it to the main application with the customCanvas.addChild() method it works fine,,,,
is that observation of any help?