2D Mandelbrot Set, can't implement zoom

[wait what huh]

Hello. This is my first time posting here. I am currently in a computer graphics college course so I am very new to OpenGL. I have to draw, pixel by pixel, the Mandelbrot Set (http://en.wikipedia.org/wiki/Mandelbrot_set) and implement zooming capability. My program draws the image but I don't know where to go from here for the zooming portion.

The zoom will receive two mouse clicks as input (upper-left and lower-right corners) and redraw.

Using glutMouseFunc() I have created a function which reads the coordinates of the mouse clicks. Now I do not know what to do with these numbers in order to zoom.

If there is any more information required to assist please let me know. Any insight will be appreciated.

[skypers]

Hello,

Well, the Mandelbrot set is initially viewed with window settings (-2;1) on X axis and (-1;1) on Y axis.

Using this, you pass a several number of complex numbers representing this covered area. Zooming is just changing these window settings :) The relation between your zoom rectangle and the window settings is trivial ;)