Hi all

I need some help about a form with a textarea field.
One note: The form is written with Extjs 3.4; I know that exist another forum but now it is no more unsupported; since this forum is still supported I have open this thread here where I hope that some people can still help me. Thanks and excuse me for this inconvenience.

My problem.

I have a simple Ext.window in which I have put an Ext.FormPanel. In this Ext.FormPanel I have put an Ext.form.FieldSet in which I have put some fields. One of these field is a textarea (Ext.form.TextArea),
Now, my objective is to render responsive this textarea when I resize the Ext.window.

It is possible to obtain this behavior?

This is my current code:

Window in which reside the Ext.FormPanel
Code:
var    win = new Ext.Window({
    id:'winTest',
    layout:'fit',
    modal:true,
    title:'Title',
    width:590,
    height:300,
    closeAction:'close',
    plain: true,
    autoScroll: true,
    items:[form],
    listeners: {
        'beforeclose': function (p) {
        }
    }
});
Ext.FormPanel in which reside the Ext.form.FieldSet
Code:
var form = new Ext.FormPanel({
    id:'FormTest',
    layout : 'form',
    width:510,
    labelAlign: 'right',
    labelWidth: 120,
    autoScroll:true,
    bodyStyle:'padding:2px;background-color:#E9EFF8;',
    monitorValid:true,
    waitMsgTarget: true,
    border: true,
    bodyBorder: true,
    trackResetOnLoad:true,
    items: [fieldset]
});
Fieldset in which I have put some fileds
Code:
var fieldset = Ext.form.FieldSet({
    id:'fsTest',
    autoHeight: true,
    defaultType: 'textfield',
    items:[.....,textarea]
    //boxMaxWidth:450
    //border:true    
})
Textarea putted in the fieldset (to shorted, I have reported only the textarea)
Code:
var textarea = new Ext.form.TextArea({
    id:'textareaTest',
    name:'TextArea',
    fieldLabel:'Insert',
    hidden:false,
    width:310,
    height:60,
    maxLength:500,
    allowBlank: true
});
Thanks for any precious help.

Lorenzo.