thread->signal_native_window_created.connect(sigc::mem_fun(priv, &PlatformDisplayPrivate::native_window_created));
thread->signal_native_window_resized.connect(sigc::mem_fun(priv, &PlatformDisplayPrivate::native_window_resized));
thread->signal_native_window_created.connect(sigc::mem_fun(priv, &PlatformDisplayPrivate::native_window_created));
thread->signal_native_window_resized.connect(sigc::mem_fun(priv, &PlatformDisplayPrivate::native_window_resized));