^F2::GoSub,CheckActiveWindow

 CheckActiveWindow:
    ID := WinExist("A")
 WinGetClass,Class, ahk_id %ID%
    WClasses := "CabinetWClass ExploreWClass"
 IfInString, WClasses, %Class%
 GoSub, Toggle_HiddenFiles_Display
  Return
  
 Toggle_HiddenFiles_Display:
    RootKey = HKEY_CURRENT_USER
    SubKey = Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
  
 RegRead, HiddenFiles_Status, % RootKey, % SubKey, Hidden
  
    if HiddenFiles_Status = 2
 RegWrite, REG_DWORD, % RootKey, % SubKey, Hidden, 1 
    else 
 RegWrite, REG_DWORD, % RootKey, % SubKey, Hidden, 2
 PostMessage, 0x111, 41504,,, ahk_id %ID%
  Return