Is it possible to write a X program that enlarges cursors
automatically?
(Partial) solution 1
Use the XTestCompareCursor from the XTEST
extension. For all windows that the mouse pointer enters compare the
cursor of this window with a set of `known' cursors (e. g. from
the cursor font). If the cursor is found, replace it with an enlarged
version, otherwise either leave it alone or substitute a standard
cursor. This will only work where the XTest extension is available.
Solution 2
Write a proxy X server that relays all client requests
unchanged to the real X server, except that it intercepts all requests
corresponing to the XCreate*Cursor Xlib
functions. XCreate*Cursor requests should be modified to use
an enlarged cursor.
This proxy server simulates a new display, e. g. :1. All
clients that connect to this display (e. g. xterm -display
:1) are displayed on the real server (normally :0) and their
mouse cursors are enlarged automatically. The mouse cursors of clients
that connect to :0 will remain unchanged.
