[madmasles]

winipox,
Попробуйте так.

Код:

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

$hForm = GUICreate('Test', 299, 253, 254, 124)
$nInput = GUICtrlCreateInput('Input', 8, 16, 81, 21)
$hStatusBar = _GUICtrlStatusBar_Create($hForm)
_GUICtrlStatusBar_SetText($hStatusBar, '03   ' & GUICtrlRead($nInput))
GUISetState()
GUIRegisterMsg($WM_COMMAND, 'WM_COMMAND')

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd

Func WM_COMMAND($hWnd, $imsg, $iwParam, $ilParam)
    Local $nNotifyCode, $nID
    $nNotifyCode = BitShift($iwParam, 16)
    $nID = BitAND($iwParam, 0xFFFF)
    Switch $hWnd
        Case $hForm
            Switch $nID
                Case $nInput
                    Switch $nNotifyCode
                        Case $EN_UPDATE;$EN_CHANGE
                            _GUICtrlStatusBar_SetText($hStatusBar, '03   ' & GUICtrlRead($nInput))
                    EndSwitch
            EndSwitch
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_COMMAND