Tag Archives: ISPRN()

SP Printer Issues

Posted on by vivaclipper 
 This is how printing is handled by the library
 functions. You need not follow this method except where it is
 imbedded in SuperLib metafunctions.

 The function SLS_PRN() is a SET/RETRIEVE function
 which sets and retrieves the default printer port as a string
 with the default as "LPT1". This function may be called with any
 valid printer port name as a parameter to set a new printer port
 for SuperLib usage.

 Valid values are "LPT1", "LPT2", "LPT3", "COM1",
 "COM2" - anything you could issue a SET PRINTER TO
 <cPort> with.

 Another SET/RETRIEVE function - SLS_PRNC() - points
 to the setting which determines if the printer port will be
 checked for readiness before printing. Passing it a False causes
 it to not check the printer before printing - handy in some
 network situations.

 At print time, LPT* ports are checked for readiness
 via the P_READY() function. (COM ports are not checked for
 readiness.) However, if SLS_PRNC() has been passed a .f., no
 check for readiness is done.

 P_READY() uses the .ASM function ISPRN() to check for
 readiness.

 If the port is not ready, the user is given
 the option to:       Try Again
                      Ignore the Warning
                      Select a Different Printer Port
                      Abort the print request

 If Abort is selected, P_READY() returns false.

 

SP_ISPRN

Posted on by vivaclipper 
ISPRN() Detects printer ready (or not) on LPT1, 2 or 3

 Returns
 <lReady> => printer ready

 Syntax
 ISPRN(nPort)

 Description
 <nPort> is either 0, 1 or 2, corresponding to LPT1,
 LPT2 or LPT3

 Examples
  if ISPRN(0)
    MSG("LPT1 is ready")
  elseif ISPRN(1)
    MSG("LPT2 is ready")
  elseif ISPRN(2)
    MSG("LPT3 is ready")
  endif

 Warnings:
 Will not ALWAYS work reliably on a network
 (redirected) printer

 Source: ISPRN.ASM

 

SP Misc/Other Functions

Posted on by vivaclipper 
 ISPART()       Determines if a value is part of a set
 CURD()         Return current drive letter
 SBROWS()       Determine number of rows in a box
 ISPRN()        Detects printer ready (or not) on LPT1, 2 or 3
 SBCENTER()     Centers box coordinates
 SBCOLS()       Determine number of columns in a box
 EVALQ()        Evaluates a logical condition in a string
 ENDSWITH()     Determines if a string ends with another string
 PRNTFRML()     Prints a formletter created by formletr()
 CDIR()         Change Directory
 VARLEN()       Returns length of a variable  of any type