# love.mousefocus

Available since LÖVE 0.9.0
This callback is not supported in earlier versions.

Callback function triggered when window receives or loses mouse focus.

## Function

### Synopsis

    love.mousefocus( f )

### Arguments

`boolean f`
  Window mouse focus

### Returns

Nothing.

## Example

    function love.load()
      text = "Mouse is in the window!"
    end

    function love.draw()
      love.graphics.print(text,0,0)
    end

    function love.mousefocus(f)
      if not f then
        text = "Mouse is not in the window!"
        print("LOST MOUSE FOCUS")
      else
        text = "Mouse is in the window!"
        print("GAINED MOUSE FOCUS")
      end
    end

## See Also

- love

##

Category:

- Callbacks