<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/02/01/preventing-a-user-from-selecting-an-item-in-a-flex-datagrid-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            import mx.events.ListEvent;
            import mx.controls.Alert;

            private function dataGrid_itemClick(evt:ListEvent):void {
                Alert.show(evt.itemRenderer.data.label, evt.type);
            }
        ]]>
    </mx:Script>

    <mx:Array id="arr">
        <mx:Object label="Alert" />
        <mx:Object label="Button" />
        <mx:Object label="ButtonBar" />
        <mx:Object label="CheckBox" />
        <mx:Object label="ColorPicker" />
        <mx:Object label="ComboBox" />
    </mx:Array>

	<mx:ApplicationControlBar dock="true">
		<mx:CheckBox id="checkBox"
				label="selectable:"
				labelPlacement="left"
				selected="true" />
	</mx:ApplicationControlBar>

    <mx:DataGrid id="dataGrid"
            dataProvider="{arr}"
            selectable="{checkBox.selected}"
            rowCount="4"
            width="200"
            itemClick="dataGrid_itemClick(event);">
        <mx:columns>
            <mx:DataGridColumn dataField="label" />
        </mx:columns>
    </mx:DataGrid>

</mx:Application>

