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focused()

A Boolean variable that's true if the window is focused and false if not.

Note: The window can only receive input if it's focused.

Examples

focused example 1

-- Open this example in two separate browser
-- windows placed side-by-side to demonstrate.

function setup()
  size(100, 100)

  describe('A square changes color from green to red when the window is out of focus.')
end

function draw()
  -- Change the background color
  -- when the window
  -- goes in/out of focus.
  if focused then
    background(0, 255, 0)
  else 
    background(255, 0, 0)
  end
end