You need to create window map and when you create new window just add it to this global map. You can use simple linked list instead of course.
You could also make it a static member function. :) Anyways, a solution depends on if you need only one window or if you need multiple windows. First a solution for single windows.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.