Opening a window with a backbutton (a child of the mainwindow i guess)

Hello

i'm trying to open a window when the button 'Registerguide' is clicked. But the window must contain a button in the upper left corner so the user can go back to the homepage. So the registerwindow must be a child of the main app.js window.

I managed to do this on other windows, but not in the app.js file I used this code:

function DateFeedWindow(title) {
    var self = Ti.UI.createWindow({
        title:title,
        backgroundColor:'red'
    });
 
    var button = Ti.UI.createButton({
        height:44,
        width:200,
        title:L('openWindow'),
        top:20
    });
    self.add(button);
 
    button.addEventListener('click', function() {
        //containingTab attribute must be set by parent tab group on
        //the window for this work
        self.containingTab.open(Ti.UI.createWindow({
            url: 'ui/ResultWindow.js'
        }));
    });
 
    return self;
};
 
module.exports = DateFeedWindow;

The app.js file where the button Registerguide has to guide the users to the RegisterWindow.js file, leaving a 'automatic button' that goes right back to the home login screen.

// this sets the background color of the master
// UIView (when there are no windows/tab groups on it)
Titanium.UI.setBackgroundColor('#fff');
 
// create tab group
var tabGroup;
 
var win = Titanium.UI.createWindow({
    title:'TabViewLogin',
    tabBarHidden:false,
});
 
 
//
//LOGIN USER INTERFACE
//
 
//LABEL Welkom!
    var label1 = Ti.UI.createLabel({
    text:'Welcome!',
    top:10,
    left:15,
    height:'auto',
    color:'#989898',
    font:{fontSize:16,fontWeight:'bold'}
    });
win.add(label1);
 
 
//BUTTON naar Registermenu
var Registerguide = Titanium.UI.createButton({
    backgroundImage:'/images/pill5.png',
    title:L('Join us!'),
    textAlign : 'left',
    color: '#FFFFFF',
    top:40,
    width:300,
    height:40,
    borderRadius:1,
    font:{fontFamily:'Arial',fontWeight:'bold',fontSize:16}
});
win.add(Registerguide);
 
//LABEL We only need a few things...
    var label2 = Ti.UI.createLabel({
    text:'We only need a few things to get you strarted.',
    top:90,
    left:15,
    height:'auto',
    color:'#989898',
    font:{fontSize:9,fontWeight:'bold'}
    });
win.add(label2);
 
//LABEL Already have an acount?
    var label3 = Ti.UI.createLabel({
    text:'Already have an account?',
    top:140,
    left:15,
    height:'auto',
    color:'#989898',
    font:{fontSize:16,fontWeight:'bold'}
    });
win.add(label3);
 
 
//USERNAME FIELD
var username = Titanium.UI.createTextField({
    color:'#336699',
    top:170,
    left:10,
    width:300,
    height:40,
    hintText:'Username',
    keyboardType:Titanium.UI.KEYBOARD_DEFAULT,
    returnKeyType:Titanium.UI.RETURNKEY_DEFAULT,
    borderStyle:Titanium.UI.INPUT_BORDERSTYLE_ROUNDED
});
win.add(username);
 
 
//PASSWORD FIELD 
var password = Titanium.UI.createTextField({
    color:'#336699',
    top:220,
    left:10,
    width:300,
    height:40,
    hintText:'Password',
    passwordMask:true,
    keyboardType:Titanium.UI.KEYBOARD_DEFAULT,
    returnKeyType:Titanium.UI.RETURNKEY_DEFAULT,
    borderStyle:Titanium.UI.INPUT_BORDERSTYLE_ROUNDED
});
win.add(password);
 
//LABEL Forgot your password?
    var label4 = Ti.UI.createLabel({
    text:'Forgot your password?',
    top:270,
    left:15,
    height:'auto',
    color:'#989898',
    font:{fontSize:9,fontWeight:'bold'}
    });
win.add(label4);
 
 
//BUTTON LOGIN 
var loginBtn = Titanium.UI.createButton({
    backgroundImage:'/images/pill4.png',
    title:'Login and Mingle.',
    top:300,
    width:300,
    height:40,
    color: '#FFFFFF',
    font:{fontFamily:'Arial',fontWeight:'bold',fontSize:16}
});
 
win.add(loginBtn);
win.open();
 
//Action voor de login button + fieldcheck
var loginReq = Titanium.Network.createHTTPClient();
 
loginBtn.addEventListener('click',function(e)
{
    if (username.value != '' && password.value != '')
    {
        loginReq.open("POST","http://localhost:8888/php/post_auth.php");
        var params = {
            username: username.value,
            password: Ti.Utils.md5HexDigest(password.value)
        };
        loginReq.send(params);
    }
    else
    {
        alert("Username/Password are required");
    }
});
 
//Datahandler Login
loginReq.onload = function()
{
    var json = this.responseText;
    var response = JSON.parse(json);
    if (response.logged == true)
    {
        username.blur(); 
        password.blur();
        Ti.App.fireEvent('grantEntrance', {
            name:response.name,
            email:response.email
        });
        win.close();
    }
    else
    {
        alert(response.message);
    }
};
 
Titanium.App.addEventListener('logout', function(e) {
    win.open();
    tabGroup.close();
});
 
 
Ti.App.addEventListener('grantEntrance', function(event)
{
    if ( tabGroup == undefined ) {
        tabGroup = Titanium.UI.createTabGroup();
 
        //MAIN NAVIGATIE WINDOWS
 
        var DateFeedWindow = require('ui/DateFeedWindow');
        var BroadcastWindow = require('ui/BroadcastWindow');
        var MessagesWindow = require('ui/MessagesWindow');
        var MyprofileWindow = require('ui/MyprofileWindow');
 
        var win1 = new DateFeedWindow(L('Datefeed'));
        var win2 = new BroadcastWindow(L('Your Broadcast'));
        var win3 = new MessagesWindow(L('Messages'));
        var win4 = new MyprofileWindow(L('Settings'));
 
        var tab1 = Ti.UI.createTab({
                title: L('Datefeed'),
                icon: '/images/KS_nav_ui.png',
                window: win1
            });
            win1.containingTab = tab1;
 
        var tab2 = Ti.UI.createTab({
                title: L('Broadcast'),
                icon: '/images/KS_nav_views.png',
                window: win2
            });
            win2.containingTab = tab2;
 
        var tab3 = Ti.UI.createTab({
                title: L('Messages'),
                icon: '/images/KS_nav_views.png',
                window: win3
            });
            win3.containingTab = tab3;
 
        var tab4 = Ti.UI.createTab({
                title: L('My Profile'),
                icon: '/images/KS_nav_views.png',
                window: win4
            });
            win3.containingTab = tab4;
 
 
        // add tabs
        tabGroup.addTab(tab1);
        tabGroup.addTab(tab2);
        tabGroup.addTab(tab3);
        tabGroup.addTab(tab4);
 
        // open tab group
        win.close();
        tabGroup.open();
 
    }
 
    });

Thanks in advance guys

the other windows work fine because the tabGroup gives you that functionality by default. Can you provide a smaller example with just the window that is not working properly?