Extjs gridpanel 中的checkbox(复选框)根据某行的条件不能选中的解决方法

Ext.define('AM.view.test.ReceiptList', {   extend: 'Ext.grid.Panel',   alias: 'widget.receiptlist',   id : 'receiptlist',   selModel : {     selType : 'checkboxmodel',     mode : 'SIMPLE',     checkOnly : true,     renderer : function(v,p,record) {       if (record.data.XR0003 == '0') {         return '<div class="x-grid-row-checker"> </div>';       }else{         return '';       }     }   },   listeners: {     beforeselect: function(grid, record, index, eOpts) {       if (record.get('XR0003')!=0) {         return false;       }     }   } });