Put Button into a Canvas

         
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Script>
        public function runMove(dir:String, e:Event):void {
            if (dir == "up") {
                moveableButton.y = moveableButton.y - 5;
            } else if (dir == "down") {
                moveableButton.y = moveableButton.y + 5;
            } else if (dir == "left") {
                moveableButton.x = moveableButton.x - 5;
            } else if (dir == "right") {
                moveableButton.x = moveableButton.x + 5;
            }
        }
      </mx:Script>
    <mx:Canvas height="100%" width="100%">
        <mx:Button id="moveableButton"
            label="{moveableButton.x.toString()},{moveableButton.y.toString()}"
            x="200" y="200" width="80" />
    </mx:Canvas>
    <mx:VBox horizontalAlign="center">
        <mx:Button id="b1" label="Up" click='runMove("up",event);' width="50" />
        <mx:HBox horizontalAlign="center">
            <mx:Button id="b2" label="Left" click='runMove("left",event);' width="50" />
            <mx:Button id="b3" label="Right" click='runMove("right",event);' width="50" />
        </mx:HBox>
        <mx:Button id="b4" label="Down" click='runMove("down",event);' width="50" />
    </mx:VBox>
</mx:Application>

1.	Scroll ticker symbols across the screen and lets users adjust the speed with an HSlider control
2.	Use Canvas to wrap Buttons
3.	Set vertical center and horizontal center for Button inside a Canvas
4.	uses constraint rows and constraint columns to position three Button controls in a Canvas container:
5.	Use Canvas to hold controls
6.	A Canvas container with two vertical regions and two horizontal regions
7.	A single constraint column that occupies 20% of the Canvas area
8.	Canvas background color white
9.	Creating a Canvas container by using constraint-based layout
10.	Use a semitransparent Canvas container to highlight the data point
11.	Canvas container
12.	Canvas Reposition
13.	Change Canvas cornerRadius and borderStyle
14.	Canvas border style solid
15.	Add style name to Canvas

Put Button into a Canvas : Canvas « Components « Flex

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