soft cursor for shared NX session

[sunweaver]

(1) launch NX/X2Go session on remote machine
(2) share that remote session from another location (e.g. helpdesk center)

if the person running the shared session (helpdesk agent) moves the mouse pointer, the person running the native NX session cannot see those pointer movements.

Feature request: add a soft mouse pointer that presents mouse events of the desktop sharing agent.

[uli42]

The XFIXES spec contains documentation about "Cursor Image Monitoring" and "Cursor Visibilty" which could help here.

Composite managers may want to render the cursor themselves instead of
relying on the X server sprite drawing, this provides a way for them to
do so without getting a double cursor image.