The main idea for this UDF came from by Melba23. Example: #include <GUIConstantsEx.au3>
#include <GUIButton.au3>
#include "GUISpoiler.au3"
$hGUI = GUICreate('GUISpoiler Example', 400, 80)
$iSpoiler = _GUICtrlSpoiler_Create(20, 20, '', '', 0)
GUICtrlCreateLabel('Label', 20, 20, 50, 20)
$hButt...