background color of the canvas disappeared when using updateDisplayList
If I put the code in the updateDisplayList for the canvas. The background color is missing. If I called super.updateDsplayList (), all the drawing is not show.What is the problem with my code or the Canvas class?
<? XML version = "1.0"? >
"" < mx:Application xmlns:mx = ' http://www.adobe.com/2006/mxml " xmlns:cmp ="PlanUI.*"creationComplete ="init ()">
< mx:Style source = "2dStyle.css" / >
< mx:Script >
<! [CDATA]
Import PlanUI.TestCanvas;
public void init (): void
{
var dc:TestCanvas = new TestCanvas();
dc.percentWidth = 100;
dc.percentHeight = 100;
dc.setStyle ("backgroundColor", 0xFF0000);
this.addChild (dc);
}
[]] >
< / mx:Script >
< / mx:Application >
package PlanUI
{
Import mx.containers.Canvas;
SerializableAttribute public class TestCanvas extends Canvas
{
public void TestCanvas()
{
Super();
this.percentHeight = 100;
this.percentWidth = 100;
}
override the updateDisplayList(unscaledWidth:Number,_unscaledHeight:Number):void function
{
This.Graphics.Clear ();
super.updateDisplayList (unscaledWidth, unscaledHeight);
this.graphics.lineStyle(1,0xFF0000,0.3);
this.graphics.drawRect (0,0,200,200);
}
}
}
My solution:
It seems that the colors of the backgorund area are really wired. I've done it puts an end to transparent color 0xFFFFFE. SO, it can drag and drop. Even, is to see the face of the other object, you cannot see :)
Tags: Flex
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