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2012-10-24T20:20:29.120
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2012-10-24T20:20:29.120
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<p>I don't know of any way to validate a check box directly but here is an example of a manually created validator for multiple check boxes found inside of a FormItem:</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" minWidth="955" minHeight="600" layout="vertical" > <mx:Script> <![CDATA[ private function doValidation():void{ var itemsSelected:int = 0; for each(var checkBox:CheckBox in app.getChildren()){ if(checkBox.selected){ itemsSelected++; } } if(itemsSelected == 0){ app.filters = [errorGlow]; app.toolTip = "You must select at least one value"; }else{ app.filters = []; app.toolTip = ""; } } private function checkBoxClicked(e:Event):void{ if((e.currentTarget as CheckBox).selected == true){ app.filters = []; app.toolTip = ""; } } ]]> </mx:Script> <mx:GlowFilter id="errorGlow" color="0xFF0000" blurX="5" blurY="5" /> <mx:Form> <mx:FormItem id="app" width="520" label="Application" > <mx:CheckBox id="checkBox1" label="Item 1" selected="false" click="checkBoxClicked(event)"/> <mx:CheckBox id="checkBox2" label="Item 2" selected="false" click="checkBoxClicked(event)"/> <mx:CheckBox id="checkBox3" label="Item 3" selected="false" click="checkBoxClicked(event)"/> <mx:CheckBox id="checkBox4" label="Item 4" selected="false" click="checkBoxClicked(event)"/> <mx:CheckBox id="checkBox5" label="Item 5" selected="false" click="checkBoxClicked(event)"/> <mx:CheckBox id="checkBox6" label="Item 6" selected="false" click="checkBoxClicked(event)"/> <mx:CheckBox id="checkBox7" label="Item 7" selected="false" click="checkBoxClicked(event)"/> </mx:FormItem> </mx:Form> <mx:Button width="60" label="Send" id="submit" click="doValidation()" /> </mx:Application> </code></pre>
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1. PODisplaying error messages for FormItems in Flex
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1. USAlex Carlos
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1. COBy the way, you cannot use the id "application" directly in the main mx:Application tag since there is a variable inside this component named "application".
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  USAlex Carlos

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