新人求助，key监听事件中调用其他组件失败

Question

想法如下：文本输入后拦截enter 键，如果用户没有登录则调出 登录画面，如果用户已登录且已授权，则调出资料画面，但是没有实现。在chrome 内出现这个提示 Uncaught TypeError: Cannot call method 'show' of undefined，代码如下：
   gg_imported = Ext.extend(Ext.grid.GridPanel, {         InsertWin: new AddInfoWin(),         UpdateWin: new UpdateInfoWin(),         LoginWin: new LoginInfoWin(),         constructor: function() {             this['store'] = new Ext.data.Store({
                 url: 'http://10.86.116.58/WebServices/gridtest.asmx/ggconfimed',
                 reader: new Ext.data.XmlReader({
                     record: 'MyTable',
                     root: 'root',
                     totalProperty: 'totalRecords',
                     fields: ['GG_ID', 'MIC_GG_NUM', 'MSL_GG_NUM', 'LINE', 'PART_NUM', 'QTY', 'SHIP_TYPE', 'CS_NUM', 'CUSTOMER', 'CUST_NUM', 'GG_SO_NUM']                 })             });
             gg_imported.superclass.constructor.call(this, {
                 //autoLoad: true,    
                 renderTo: Ext.getBody(),
                 closable: true,
                 id: '_grid1',
                 title: 'GG_Imported ',
                 //width: 800,
                 //height: 500,
                 tbar: ['-', 'MIC_GG_Query:', {
                     xtype: 'textfield',
                     id: 'mitac_pn',
                     width: 120,
                     emptyText: 'Pls Input MIC_GG_NUM',
                     enableKeyEvents: true,
                     listeners: {
                         specialkey: function(field, e) {
                             mic_gg = Ext.get('mitac_pn').dom.value;
                             //var _record = Ext.get('mitac_pn').dom.value;
                             if (e.getKey() == e.ENTER && mic_gg != '' && mic_gg != 'Pls Input MIC_GG_NUM') {
                                 var res = '';
                                 sta = '1';
                                 if (name == "") {
                                     this.LoginWin.show();                                 } else {
                                     Ext.Ajax.request({
                                         url: 'http://10.86.116.58/WebServices/gridtest.asmx/userchk',
                                         params: { user: name, program_id: 21 },
                                         method: 'post',
                                         async: false,
                                         success: function(result) {
                                             res = result.responseText;
                                             //alert(res);
                                             //this.InsertWin.show();                                         },
                                         failure: function() {
                                             Ext.MessageBox.alert("Warning!!", 'system error!!');
                                             //return 0;
                                         }
                                     });
                                 };                                 //alert(res);
                                 if (res == 'true') {
                                     this.InsertWin.show();
                                     //alert('Passed!!');
                                 } else {
                                     Ext.MessageBox.alert("Warning!!", "Your access was denied! Plz contract with Admin!!");
                                     //alert("Failed!!");
                                 };
                             };
                         }
                     },
                     scope: this                 } 但是在同样是.show 在query的按键的handle内就能调用
 text: 'Query',
                     iconCls: 'query',
                     handler: function() {
                         mic_gg = Ext.get('mitac_pn').dom.value;                         //var _record = Ext.get('mitac_pn').dom.value;
                         //Ext.getCmp('_grid1').getStore().baseParams['IV_NO'] = _record;
                         if (mic_gg != 'Pls Input MIC_GG_NUM') {
                             //Ext.getCmp('_grid1').getStore().load({ params: { start: 0, limit: 50} });
                             var res = '';
                             sta = '1';
                             if (name == "") {
                                 this.LoginWin.show();                             } else {
                                 Ext.Ajax.request({
                                     url: 'http://10.86.116.58/WebServices/gridtest.asmx/userchk',
                                     params: { user: name, program_id: 21 },
                                     method: 'post',
                                     async: false,
                                     success: function(result) {
                                         res = result.responseText;
                                     },
                                     failure: function() {
                                         Ext.MessageBox.alert("Warning!!", 'system error!!');
                                         //return 0;
                                     }
                                 });
                                 if (res == 'true') {
                                     this.InsertWin.show();
                                     //alert('Passed!!');
                                 } else {
                                     Ext.MessageBox.alert("Warning!!", "Your access was denied! Plz contract with Admin!!");
                                     //alert("Failed!!");
                                 };
                             };
                         } else {
                             Ext.Msg.alert("系統提示", "請輸入 MIC_GG_NUM 進行查詢！");
                         };
                     },                     scope: this
                 }
求大牛指点迷津！！

Answer 1

你调试下看看两处地方的this.LoginWin是否相同呢

Answer 2

var _this = this;
listeners: {
                         specialkey: function(field, e) {
                             mic_gg = Ext.get('mitac_pn').dom.value;
                             //var _record = Ext.get('mitac_pn').dom.value;
                             if (e.getKey() == e.ENTER && mic_gg != '' && mic_gg != 'Pls Input MIC_GG_NUM') {
                                 var res = '';
                                 sta = '1';
                                 if (name == "") {
                                     this.LoginWin.show();
 
                                 } else {
                                     Ext.Ajax.request({
                                         url: 'http://10.86.116.58/WebServices/gridtest.asmx/userchk',
                                         params: { user: name, program_id: 21 },
                                         method: 'post',
                                         async: false,
                                         success: function(result) {
                                             res = result.responseText;
                                             //alert(res);
                                             //this.InsertWin.show();
 
                                         },
                                         failure: function() {
                                             Ext.MessageBox.alert("Warning!!", 'system error!!');
                                             //return 0;
                                         }
                                     });
                                 };
 
                                 //alert(res);
                                 if (res == 'true') {
                                     _this.InsertWin.show();
                                     //alert('Passed!!');
                                 } else {
                                     Ext.MessageBox.alert("Warning!!", "Your access was denied! Plz contract with Admin!!");
                                     //alert("Failed!!");
                                 };
                             };
                         }
                     },

Answer 3

 谢谢您的答复，组件能调用了，但是出现了新问题，else 的那个messageBox 和 要调出的窗口同时跳出了，
然后登陆画面没有办法在登陆后关闭；

Answer 4

这种逻辑问题，你得自己调，关闭窗体调用窗体对象的close方法就可以了
还有if和else在呢么可能同时执行呢？你得找到真正情况