Ext给gird每个单元格加tip

在每一列的列头加上,renderer:showTip；

{header: "<s:text name='report.enabled'/>", dataIndex: 'strEnabled', width: 0,? sortable: true ,menuDisabled : true,renderer:showTip }

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//表格中每一列的tip提示

?????????? function showTip(data, metadata, record, rowIndex, columnIndex, store){

???????????????????? metadata.attr ='" ext:qtip="' + data;?

???????????????????? return data;

????????????? }