noveeee

#include <GUIConstantsEx.au3>
#include <EditConstants.au3>

GUICreate("Password Test", 500, 200)
$Input = GUICtrlCreateInput("Password", 10, 20, 40, 20, BitOR($ES_PASSWORD, $ES_AUTOHSCROLL))
$OK = GUICtrlCreateButton("OK", 60, 20, 40, 20)
GUISetState(@SW_SHOW, "Password Test")
While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            GUISetState(@SW_HIDE, "Password Test")
            ExitLoop
        Case $OK
            MsgBox(0, "Password", "Password has " & StringLen(GUICtrlRead($Input)) & " characters!")
            ExitLoop
    EndSwitch
WEnd