Resizing canvas not working?

Question

Hello all,
I'm a absolute beginner at flex and I have a slight problem
with resizing a control derrived of
Canvas (which is the child of another canvas).
Setting the height property does not seem to change its
internal height.
For example, if I have a canvas with height 400 and set the
height to 10, an click event handler will still fire if I click in
the region of the original canvas (with height 400). I would expect
the clickable region to change according to the new height.
Also, if I draw the background of an canvas within
updateDisplayList with
drawRoundRect, and reset the height, I would expect the
background (ie the canvas parent) to show/invalidate the part that
was previously occluded by the bigger canvas. This does not happen,
not even when I try to force an invalidation using
invalidateSize and/or
invalidateDisplayList.
What am I missing?
Thanks!
Ben
Included the code for a sample canvas:
package code
import mx.containers.Canvas;
import mx.events.*;
import flash.events.MouseEvent;
import mx.effects.*;
public class TestCanvasClass extends Canvas
public function TestCanvasClass() {
this.addEventListener(MouseEvent.CLICK, OnClick);
private function OnClick(e :MouseEvent) :void {
SlideIn();
public function SlideIn() :void {
this.height = 10;
override protected function updateDisplayList(w:Number,
h:Number):void {
super.updateDisplayList(w, h);
DrawBackground();
private function DrawBackground() :void {
this.drawRoundRect(0, 0, this.width, this.height, 8, 0, 1,
0, null, null, null);
which is in cluded in an mxml page like this:
<mx:Canvas width="100%" height="100%" label="Impressum"
showEffect="WipeDown" hideEffect="WipeUp">
<test:TestCanvasClass label="ffdsd" width="200"
height="100">
</test:TestCanvasClass>
</mx:Canvas>

Answer 1

Ok, just wondering how I would get this to work in the Game class?
I have a method that parses commands that get sent to it (from a console window):
private boolean parseInput(String cmd) {
     String[] tokens = cmd.split(" ");
     if(tokens[0].equalsIgnoreCase("show")) {
          frame.pack();
          frame.setVisible(true);
          return true;
     else if(tokens[0].equalsIgnoreCase("hide")) {
          frame.setVisible(false);
          return true;
     else if(tokens[0].equalsIgnoreCase("set") && tokens.length >= 3) {
          if(tokens[1].equals("scale")) {
               try {
                    int scale = Integer.parseInt(tokens[2]);
                    screen.setScale(scale);
               } catch(NumberFormatException e) {
                    System.out.println("Invalid scale.");
               frame.pack();
               return true;
          return false;
     return false;
}How can I make it work from there?
Edited by: KrimsonEagl on 6/06/2009 08:23