extjs4 grid点击单元格鼠标手形，修改背景色
extjs4让grid的单元格点击时支持手形。
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Ext.widget('gridpanel', { title: 'grid', height: 200, width: 200, renderTo: Ext.getBody(), columns: [{ text: 'Col', dataIndex: 'col', renderer: function (val, metadata, record) { if (record.get('col') == 1) { metadata.style = 'background-color: #FFFFCC !important;cursor: pointer;' } return val; }, listeners:{ "click":function(grid,cell,row){ var r = grid.store.getAt(row); } } }], store: { fields: ['col'], data: [{ col: 1 }, { col: 2 }] }})??
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