I'm working on a game that allows a kid to draw on the screen. The framework I'm using is called Slick (slick.cokeandcode.com) and uses lwjgl for its openGL access. While I know how to program, I do not know openGL and so I don't know how to approach my problem.
In the simplest form, my problem is this:
How can I draw to the screen when the child holds the mouse down and not store the mouse coordinates for subsequent redraws of the screen?
In pseudo code I would have something like this -
draw previous image to screen
drawline from last mouse x/y position to current x/y position
store screen area to buffer
I've done this in Swing before by creating an Image, getting its graphics context and drawing to it. I then simply draw the image to the screen. Using lwjgl without more experience has gotten me stuck.

Thanks,
Dr. A>