on constructWindowManager  
  return(createManager(#window_manager, getClassVariable("window.manager.class")))
end

on deconstructWindowManager  
  return(removeManager(#window_manager))
end

on getWindowManager  
  tMgr = getObjectManager()
  if not tMgr.managerExists(#window_manager) then
    return(constructWindowManager())
  end if
  return(tMgr.getManager(#window_manager))
end

on createWindow tid, tLayout, tLocX, tLocY, tSpecial 
  return(getWindowManager().create(tid, tLayout, tLocX, tLocY, tSpecial))
end

on removeWindow tid 
  return(getWindowManager().Remove(tid))
end

on getWindow tid 
  return(getWindowManager().get(tid))
end

on windowExists tid 
  return(getWindowManager().exists(tid))
end

on mergeWindow tid, tLayout 
  if windowExists(tid) then
    return(getWindow(tid).merge(tLayout))
  else
    return FALSE
  end if
end

on activateWindow tid 
  if voidp(tid) then
    return FALSE
  end if
  return(getWindowManager().Activate(tid))
end

on deactivateWindow tid 
  if voidp(tid) then
    return FALSE
  end if
  return(getWindowManager().deactivate(tid))
end

on registerClient tid, tClientID 
  if windowExists(tid) then
    return(getWindow(tid).registerClient(tClientID))
  else
    return FALSE
  end if
end

on registerProcedure tid, tHandler, tClientID, tEvent 
  if windowExists(tid) then
    return(getWindow(tid).registerProcedure(tHandler, tClientID, tEvent))
  else
    return FALSE
  end if
end

on showWindows  
  return(getWindowManager().showAll())
end

on hideWindows  
  return(getWindowManager().hideAll())
end

on lockWindowLayering  
  return(getWindowManager().lock())
end

on unlockWindowLayering  
  return(getWindowManager().unlock())
end

on printWindows  
  return(getWindowManager().print())
end