Autohide Desktop Icons when Desktop is not Active

Hide icons when desktop is not active. If you want to show icons, just click on them.
Tested and works ot Win7 x64.

Check:
if (WinActive("ahk_class Progman"))
   WinWaitNotActive, ahk_class Progman
else WinWaitActive, ahk_class Progman
Control, % WinActive("ahk_class Progman") ? "Show" : "Hide",, SysListView321, ahk_class Progman
Goto Check