#include <GUIConstants.au3>
#include <WinAPI.au3> ; for _WinAPI_CreateWindowEx()
Opt("MustDeclareVars", 1) ; example from "https://www.autoitscript.com/forum/topic/178961-resize-control/?do=findComment&comment=1336645"
Global Const $SBS_SIZEBOX = 0x08
Global Const $SBS_SIZEGRIP = 0x10
Global $hGu...