#include <GUIConstantsEx.au3>
#include <GDIPlus.au3>

Local $hGUI = GUICreate("Картинки по таймеру", 500,500)

Local $fileimage ="test1.png"
Local $counterimage =1
_GDIPlus_Startup()
Local $hImage = _GDIPlus_ImageLoadFromFile("test1.png")

GUISetState(@SW_SHOW, $hGUI)
Local $hTimer = TimerInit()

While 1

Local $iDiff = TimerDiff($hTimer)
if ($iDiff > 5000  ) then
$hTimer = TimerInit()
$counterimage = $counterimage +1
$fileimage ="test" & $counterimage &".png"

$hImage = _GDIPlus_ImageLoadFromFile($fileimage)
Endif

Local $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI)
_GDIPlus_GraphicsDrawImage($hGraphic, $hImage, 0, 0)
Switch GUIGetMsg()
Case $GUI_EVENT_CLOSE
ExitLoop

EndSwitch
WEnd