Код:

#Include <GUIConstantsEx.au3>
#Include <WindowsConstants.au3>
Global $Zoom = 0
GUICreate('MyGUI', 400, 400)
$Pic = GUICtrlCreatePic('Test.jpg', 168, 168, 64, 64)
GUISetState()
While 1
Switch GUIGetMsg()
Case $GUI_EVENT_CLOSE
Exit
Case $Pic
If $Zoom Then
For $i = 244 To 64 Step -20
GUICtrlSetPos($Pic, (400 - $i) / 2,(400 - $i) / 2, $i, $i)
GUICtrlSetImage($Pic, 'Test.jpg')
Next
Else
For $i = 76 To 256 Step 20
GUICtrlSetPos($Pic, (400 - $i) / 2,(400 - $i) / 2, $i, $i)
GUICtrlSetImage($Pic, 'Test.jpg')
Next
EndIf
$Zoom = Not $Zoom
EndSwitch
WEnd