CrystGLFW::Event::WindowToggleFocus

A CrystGLFW::Event::WindowToggleFocus is generated when the input focus of a Window is toggled. It is yielded to the block defined by on_toggle_focus.

window = Window.new

window.on_toggle_focus do |event|
  if event.focused?
    puts "Window is focused!"
  else
    puts "Window is out of focus!"
  end
end

window

You can retrieve the event's associated Window using the window method:

event.window # => CrystGLFW::Window

focused?

You can determine whether or not the Window was focused using the focused? method:

event.focused?

focused? returns true if the Window gained focus, and returns false if the Window lost focus.