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Technical Note PR13
Spooler Queries?
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Introduction
When the LaserShare spooler is on an AppleTalk network, it acts like a
LaserWriter-type device, which can be chosen and communicated with much like a
real LaserWriter. Some applications, however, must communicate with a
LaserWriter directly, not a spooler. If this is true for your application, you
can check whether you are actually talking to a real LaserWriter by sending to
the LaserWriter the following query:
%!PS-Adobe-1.2 Query
%%Title: Query to Spooler/Non-Spooler status
%%?BeginSpoolerQuery
(0) = flush
%%?EndSpoolerQuery 1
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(The query has to be sent using the Printer Access Protocol (PAP). The object
code for PAP is available from Licensing.) If the string returned begins with a
"%%" then it is a status string, and you can ignore it and wait for another
string. If the LaserWriter is actually a LaserShare spooler, then the string
that is returned will be "1." If the LaserWriter is a real LaserWriter then the
string returned will be "0."
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References
PostScript Language Reference Manual
Adobe Systems Document Structuring Conventions
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