PxPlus User Forum

Main Board => Discussions => Programming => Topic started by: Bruno Biancucci on September 16, 2019, 10:53:27 AM

Title: Error trapping
Post by: Bruno Biancucci on September 16, 2019, 10:53:27 AM

I want to trap and report back any error set in PxPlus to a calling program (DOS batch file in this case).  This installation is a Windows Server 2012 with PxPlus 11.50 (base).

PxPlus is initiated in a batch file as follows:

echo off
echo We are in the batch file
echo Before: %errorlevel%
test.pxp
echo After: %errorlevel%
pause


My sample PxPlus program simply generates an error (Divide by zero)
0010 CLEAR
0020 SETERR 0080
0030 PRINT "Hello World..."
0050 LET A=2/0
0060 PRINT "ok..."
0065 WAIT 1
0070 END
0080 PRINT "oops..."
0081 LET %EXIT_CODE=1
0085 WAIT 1
0090 END


Removing line 20 make no difference for me in this case.  Pxplus program will crash hard and return back to the batch file.  In both cases the %errorlevel% variable is still set to 0.

The end game is to inform the batch file there was a problem with the PxPlus program.  This is for an automated process and we're simply looking for a way to know if the test.pxp program generated an error or ran clean.
TIA, Bruno.

Title: Re: Error trapping
Post by: Mike King on September 16, 2019, 01:50:45 PM

The RELEASE directive will terminate your application and allow you to pass an error code to the OS.