does "if WinActivate" work?

[Imrac]

Yes it should:

1::
 if WinActivate, ahk_id %wowid1%
 { 
 ControlSend,, 2, ahk_id %wowid1%
  ControlSend,, Numpad2, ahk_id %wowid2%
 } 
else
{ 
 ControlSend,, Numpad2, ahk_id %wowid1%
  ControlSend,, 2, ahk_id %wowid2%} 
}
 Return

**Note: Not Tested***