Mouse drag (event)

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Revision as of 11:22, 27 December 2012 by AfterLifeLochie (Talk | contribs) (Updated error with only listing two event parameters, and not three.)

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(Reason: A demonstration on the use and handling of this event would be beneficial. AfterLifeLochie 16:00, 30 November 2012 (MSK))


Grid Modem.png  Event mouse_drag
Fired when the mouse is dragged (implies that a mouse_click event has already occurred).
Returned Object 1 The mouse button that was clicked.
Returned Object 2 The X-coordinate of the click (in screen-characters).
Returned Object 3 The Y-coordinate of the click (in screen-characters).

Examples

Grid paper.png  Example
Print the new co-ordinates of the mouse every time a mouse_drag event occurs.
Code
while true do
  _, button, xPos, yPos = os.pullEvent("mouse_drag")
  print("mouse_drag => " .. tostring(button) .. ": " ..
    "X: " .. tostring(xPos) .. ", " ..
    "Y: " .. tostring(yPos))
end
Output The X and Y position of the mouse during the drag.