Check coordinate for mouse click

          

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" backgroundColor="white">
    <mx:Script>
        
        import mx.controls.Alert;
        private function handleMouseDown(event:MouseEvent):void {
            var pt:Point = new Point(event.localX, event.localY);
            pt = event.target.localToGlobal(pt);
            pt = c1.globalToContent(pt);
            var whichColor:String = "aaa";
            if (pt.x < 150) {
                if (pt.y < 150)
                    whichColor = "red";
                else
                    whichColor = "blue";
            }
            Alert.show("You clicked on the " + whichColor);
        }
      
    </mx:Script>
    <mx:Canvas id="c1" borderStyle="none" width="300" height="300" mouseDown="handleMouseDown(event);">
        <mx:Canvas width="150" height="150" x="0" y="0" backgroundColor="red">
            <mx:Button label="Red" />
        </mx:Canvas>
        <mx:Canvas width="150" height="150" x="0" y="150" backgroundColor="blue">
            <mx:Button label="Blue" />
        </mx:Canvas>
    </mx:Canvas>
</mx:Application>

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Check coordinate for mouse click : MouseEvent « Event « Flex

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