I have found a tool that may come handy for some of you: hxxp://fbe.am/n4h Example usage: To hide a window (SW_HIDE): ShowWindow "Worker Window" 0 To show a window (SW_SHOW): ShowWindow "Worker Window" 5 The show command values can be found here: hxxp://msdn.microsoft.com/en-us/library/windows/desktop/ms633548(v=vs.85).aspx Good luck