OpenGL Window class in C++

Hi,

I recently bought myself a mac and I would like to port some C++ OpenGL programming projects from Windows. On Windows I had a class that initialized an OpenGL window and provided functions to draw pixelated graphics, draw graphs and so on. For example:

Code:

//compute some array x here....
MyGLWindow* win = new MyGLWindow(640,480,"MyGraph");
win->drawgraph(x);
//compute another array y here...
win->addgraph(y);

Writing such a class in C++ on Windows was pretty much a breeze. Not so on the mac as far as I can see. After numerous web searches it seems that the two most common OpenGL approaches are

-glut, which is no good for my purposes, since I don't want to get stuck in glutMainLoop
-cocoa, which seems to fail by the same reason. In all sample programs/tutorials I've seen there is the initial call to NSApplicationMain and/or one sets the window properties in xcode.

I assume that it is possible to do what I want, but how much of a pain is it going to be? Are there any tutorial/code snippets out there?