CC-Tweaked/doc/events/mouse_up.md

module: [kind=event] mouse_up

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.

Example

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))
end