Flex4 带checkbox的DataGrid

<customdatagrid:CustomDataGrid width="100%" height="100%" id="dg" allowMultipleSelection="true" horizontalScrollPolicy="auto" customLineNumber="true" customCheckBox="true" customCheckBoxDataField="selected"> <customdatagrid:groupedColumns> <mx:AdvancedDataGridColumn headerText="排污口" width="200" dataField="TARGET_NAME" /> <mx:AdvancedDataGridColumn headerText="海区" dataField="SEA" /> <mx:AdvancedDataGridColumn headerText="省份" dataField="PROVINCE" /> <mx:AdvancedDataGridColumn headerText="城市" dataField="CITY" /> <mx:AdvancedDataGridColumn headerText="重点海域" dataField="IMP_AREA" /> <mx:AdvancedDataGridColumn headerText="排污类型" dataField="POLLUTANT_TYPE" /> <mx:AdvancedDataGridColumn headerText="水质类别" dataField="WATER_TYPE" /> <mx:AdvancedDataGridColumn headerText="监测类型" dataField="MONITOR_TYPE" /> <mx:AdvancedDataGridColumn headerText="排污口类型" dataField="DRA_TYPE" /> <mx:AdvancedDataGridColumn headerText="功能区类型" dataField="FUNC_TYPE" /> <mx:AdvancedDataGridColumn headerText="排序号" dataField="ORDER_NUM" /> </customdatagrid:groupedColumns> </customdatagrid:CustomDataGrid> <!-- 说明 customLineNumber="true" -- 增加行号列 customCheckBox="true" -- 增加checkbox列 customCheckBoxDataField="selected" -- 设定数据源中对象checkbox对应的属性， 【不支持】多级属性（例如对如下对象 {name:"Name",id:"Id",aProp:{prop:"xxxx",selected:"false"}} 设置 customCheckBoxDataField="aProp.selected" ) -->