1. column { xtype: 'gridcolumn', renderer: function(value, metaData, record, rowIndex, colIndex, store, view) { var checked = ''; if(rowIndex === 0){ checked = 'checked'; } return ''; }, width: 50, align: 'center', dataIndex: 'active', text: '선택' } 2. event listeners : { itemClick : { fn : me.onGridItemClick } } 3. function onGridItemClick : function(dataview, record, item, index, e, eOpts) { $(item).find("input[name=radiogroup]").prop("chec...