radio和checkBox的用法：

(function(){
	Ext.onReady(function(){
		new Ext.form.Panel({
			title:‘Ext.form.field.checkBox和Ext.form.field.Radio示例‘,
			bodyStyle:‘padding 5 5 5 5 ‘,
			frame:true,
			height:150,
			width:400,
			renderTo:‘form‘,
			defaults:{
				labelSeparator:‘:‘,
				labelWidth:80,
				width:200,
				labelAlign:‘left‘
			},
			items:[{
				xtype:‘radio‘,
				name:‘sex‘,
				fieldLabel:‘性别‘,
				boxLabel:‘男‘
			},{
				xtype:‘radio‘,
				name:‘sex‘,
				fieldLabel:‘性别‘,
				boxLabel:‘女‘
			},{
				xtype:‘checkboxfield‘,
				name:‘swim‘,
				fieldLabel:‘爱好‘,
				boxLabel:‘游泳‘
			},{
				xtype:‘checkboxfield‘,
				name:‘walk‘,
				fieldLabel:‘爱好‘,
				boxLabel:‘散步‘
			}]
		});
	});
	
})();