I see that this function dissapeared, whats the way it works now?
1 - It is enabled by default? Or disabled by default? I prefer something that doesn't eat CPU :-)
2 - In the SFML2 code sample called OpenGL, you have // Activate the window before using OpenGL commands.
// This is useless here because we have only one window which is
// always the active one, but don't forget it if you use multiple windows
window.SetActive();
I noticed that the box is only drawn if you activate the window. If you don't, it wont be displayed, so it isn't useless, it's necessary.