How to have no mouse on a second screen

[Gilbert Brisset]

Hello,

I am developping a GUI under Java/Eclipse/Rich Client Platform on a 
Linux Fedora host.
There is two displays :
- a standard 1600x1200 LCD display which holds the main GUI and is used 
by the operator
- a Tv display connected to the analog Svideo output of the graphic card 
(Nvidia). This Tv displays a video that is overlayed by text and 
reticles drawn by the Java RCP application. The Tv is outside and is not 
seen by the operator.

I use the closed source nvidia driver.
I have configured the xorg.conf file with Xinerama.
All works fine and I have the GUI on the LCD and the video with text and 
reticles on the Tv.

The problem is that the mouse cursor can go on the Tv display and, in 
this case, the operator loses its cursor and no longer knows where it is.

There should be one solution :
configure the xorg.conf file with two server-layouts :
- one with the LCD display and the mouse
- an other with the Tv display with no mouse

then go in the window manager configuration file (for Fedora it is Gnome 
and I have to modify the gdm/custom.conf file)
and declare the two server-layout.

This works and builds two X displays :0.0 and :0.1

But Java/RCP is not able in one application to access to two displays.

So the question is :
Is it possible to configure the X system to disable the mouse on the 
second screen ?