Use the functionality of forms:
Ext.define('MyRec', {
extend: 'Ext.data.Model',
fields: ['f1', 'f2', 'f3']
});
var w = new Ext.window.Window({
width: 400,
height: 200,
title: 'Foo',
autoShow: true,
layout: 'fit',
items: {
xtype: 'form',
defaultType: 'displayfield',
items: [{
name: 'f1'
}, {
name: 'f2'
}, {
name: 'f3'
}]
}
});
var rec = new MyRec({
f1: 'a',
f2: 'b',
f3: 'c'
});
w.down('form').getForm().loadRecord(rec);