Yea, it's more accurate, I was talking about the fact that Direct3D 11 split window and device/device context I was not clear how I said it.

I hope a day OpenGL will works like that to avoid a dummy context.

Is it really necessary to load your data before you create the window?

One check and log message can be added surely if no one render window is set and init function of renderer is called surely, it's true.