Show windows

[ASut]

How to show all the windows that use the following command to hide them

if WinActive("","") Then    
WinSetState("", "", @SW_HIDE)

[Airwolf]

Use WinGetHandle() to retrieve the handle of the window and use that to hide or show instead of using strings.

$window1 = WinGetHandle("Title","Text")
If WinActive($window1) Then 
WinSetState($window1,"",@SW_HIDE)
EndIf

You can also populate an array with WinList() and then perform a WinGetState() on each to find the hidden windows.