Mouse position in OpenGL ( again )


Like some others, I am currently developping an OpenGL game.

If you want to see a early release:

And of course, I have some problems with the latest version of the library to know about the mouse screen position while running in fullscreen.
So please, can somebody could solve the problem ??
[ With the version 1.2, I had problems initialising joysticks, it’s why I would prefer using the 1.2.3 ].

Bernard LERAT.