How to update kdelibs variables globally

[David Jarvie]

I'm implementing the time zones KDEDModule, and it needs to update a couple of 
variables in KSystemTimeZones at initialisation and whenever it detects a 
change. This update needs to be available to all applications which are using 
KSystemTimeZones. What is the best way of doing this? I'm not familiar enough 
with how shared libraries work - is it possible to share a variable between 
applications, or is there always a separate copy of each static variable 
(class static or global static) for each individual application?

Another possibly relevant factor is that the values will be stored in a config 
file between sessions, and the config file will be updated whenever a change 
occurs (which isn't likely to be often).

-- 
David Jarvie.
KAlarm author and maintainer.
http://www.astrojar.org.uk/kalarm