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 npready()           Test if printer at specified port is ready
------------------------------------------------------------------------------
 Declaration
   printer.hdr

 Syntax
   func logical npready extern
   param value uint uLPTNumber

 Arguments
   uLPTNumber is the LPT port number to check. Possible values are
   1, 2, or 3.

 Return
   A logical indicating if the printer on the specified port is ready.

 Description
   This function returns .t. if the printer at the specified port is ready.

 Example
   #define EXAMPLE_IO
   #include example.hdr

   proc Test_npready
   vardef
      uint n
   enddef
   for n := 1 to 3
      ? "LPT" + istr( n ), "is " + iifc( npready( n ), "", "not " ) + "ready"
   next
   endproc

   proc main
   Test_npready()
   endproc