XpRehashPrinterList causes the X Print Server to recompute (update) its list of
available printers, and update the attributes for the printers. The intended
usage of this routine is in a special tool that a system administrator can run
after changing the printer topology. General applications are encouraged to use
this call sparingly if at all, and let the system administrator control printer
Depending on the print facilities underlying the X Print Server, the X Print
Server may be able to detect changes in the printer topology and dynamically
update to reflect the changes, or may not be able to detect the changes and will
have to be notified via XpRehashPrinterList.
Existing print contexts will not be affected by XpRehashPrinterList as long as
their printer destination remains valid.