gl_context.set_swap_interval(options.no_vsync ? 0 : 1);
window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &LauncherBase::exit), 0));
keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &LauncherBase::key_press), false));
gl_context.set_swap_interval(options.no_vsync ? 0 : 1);
window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &LauncherBase::exit), 0));
keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &LauncherBase::key_press), false));