Constraining mouse cursor globally in xorg

[Russell Shaw]

Alex White wrote:
> Hi,
> 
> Not sure if this is the right place for this question, but here goes..
> 
> I need to constrain the mouse cursor in xorg, to prevent it reaching an  
> area of screen that is not visible to the user (don't ask).
> 
> I've noticed that there is support for this within the x server using the  
> ConstrainCursor function. What this function provides is exactly what I  
> need.
> 
> What's not clear to me is how I can access this function from the  
> application level. (or is it internal only?). None of the pScreen member  
> functions appear to be exposed in the libraries I've searched.
> 
> Do I need to write a simple xorg module to do this?
> 
> Any suggestions on how to proceed?

How about:
   http://tronche.com/gui/x/xlib/input/XGrabPointer.html
   http://tronche.com/gui/x/xlib/input/XWarpPointer.html

To make it global could be done in the window manager maybe.