extract text from a wpf window

[tonauac]

hey how can I extract text from a WPF window

this is what I am doing

include <DotNetIdentification.au3>
Run("F:\Shashank\shashank\DEbug 09\Debug\RibbonDemo.exe")
$WindowName = "Login Version"
$WindowText = ""

$var1 = NET_ControlGetHandleByName( $WindowName,$WindowText,"txtUser")
MsgBox("64","ControlGetHandle",$var1)
$var2=ControlGetText("Login Version","user",$var1)
MsgBox("64","ControlGetText",$var2)