[CLOSED] How I can get the similar layout in 2.0

[RCM]

Hi,

I had something like below code for login window before:

    <ext:Viewport ID="vpLogin" IDMode="Explicit" runat="server" Layout="Center">
        <Items>
            <ext:Window ID="windowLogin" runat="server" Layout="Center">
                <Items>
                    <ext:Hidden IDMode="Explicit" ID="txtPleaseWait" runat="server" Text="HiddenText" />
                 </Items>
           </ext:Window>
        </Items>
    </ext:Viewport>

After I upgraded to 2.0, I found an issues: the window doesn't show out anymore.

I have checked change log and found that center layout is not existed anymore. So, how I can get a similar looking layout in 2.0? Please provide me an example. Many thanks.

RCM