extjs2.0好像不支持单选框组，因此用两个name相同单选框来实现单选框组
var radio1 = new ext.form.radio({boxlabel:'男',name:'sex',id:'yes',inputvalue:'0',width : 150, height : 20});
var radio2 = new ext.form.radio({boxlabel:'女',name:'sex',id:'no',inputvalue:'1', width : 150,height : 20});
//性别配置fieldset
var fieldset = new ext.form.fieldset({
     title : '性别配置',
     autoheight : true,
     width : 350,
     labelalign : 'right',
     labelwidth : 110,
     bodystyle : 'padding:5px 5px 0',
     layout:'column',
     items : [{
           columnwidth : .5,
           items:radio1  //radio1一定要写在单独的items里面，不然在页面显示的效果就是两个单选框的圆圈在前面，两个单选框选项的描述在后面
     },
     {
           columnwidth : .5,
           items: radio2
     }]
});
var fp = new ext.formpanel({
     id : 'sex_mode',
     labelwidth : 110,
     waitmsg : '正在提交，请稍后...',
     frame : true,
     width : 380,
     autoheight : true,
     layout:'column',
     items : [fieldset]
});
var winkey = new ext.window({
     id : sex_win,
     title : '[性别]维护',
     autoheight :true,// 320,
     width : 400,
     closeaction : 'hide',
     closable:false,
     iconcls : 'add',
     modal : true,
     buttons : [{
           text : '提交',
           id : 'button',
           handler : function() {
                var sex = fp.form.findfield(sex).getgroupvalue();
                if(sex != '' && sex != undefined && sex != null){
                     fp.form.submit({
                           url : '',  //配置性别的方法
                           waittitle : [性别]修改,
                           waitmsg : '正在提交数据,请稍后... ...',
                           success : function(form, action) {
                                     ext.messagebox.alert('提示信息',action.result.msg);
                           },
                           failure : function(form, action) {
                                ext.messagebox.alert('提示信息', 更新性别有误！);
                           }
                     });
                }else{
                     hs.util.msg('提示信息', '请选择性别！');
                }          
           }
     }],
     items : [fp]
});
以上就是extjs2.0里ext.form.radio水平排列布局的详细内容。