This event is fired when a mouse button is released or a held mouse leaves the computer's terminal.

Return values

  1. string: The event name.
  2. number: The mouse button that was released.
  3. number: The X-coordinate of the mouse.
  4. number: The Y-coordinate of the mouse.


Prints the coordinates and button number whenever the mouse is released.

while true do
  local event, button, x, y = os.pullEvent("mouse_up")
  print(("The mouse button %s was released at %d, %d"):format(button, x, y))