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Q35905: Example of BASIC Calling MS OS/2 Function DosStartSession

Article: Q35905
Product(s): See article
Version(s): 6.00 6.00b 7.00
Operating System(s): OS/2
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 1-FEB-1990

Below is a sample program that makes a call to the MS OS/2 function
DosStartSession. This program can be compiled in Microsoft BASIC
Compiler Versions 6.00 and 6.00b for MS OS/2 and Microsoft BASIC
Professional Development System (PDS) Version 7.00.

The full pathname must be specified for the program to be executed. If
this is not done when you are using OS/2 Version 1.00, an error 203 is
generated. OS/2 Version 1.10 and 1.20 produce an error 2.

The following is a code example:

'This information can be found in BSEDOSPC.BI
TYPE ADDRESS
  Offset    as INTEGER
  Segment   as INTEGER
END TYPE

TYPE STARTDATA
  cb    as INTEGER
  Related   as INTEGER
  FgBg      as INTEGER
  TraceOpt  as INTEGER
  PgmTitle  as ADDRESS
  PgmName   as ADDRESS
  PgmInputs as ADDRESS
  TermQ     as ADDRESS
END TYPE

DECLARE FUNCTION DosStartSession%(_
                 SEG P1 AS StartData,_
                 SEG P2 AS INTEGER,_
                 SEG P3 AS INTEGER)

DIM info AS STARTDATA
DIM apinputs AS ADDRESS, apname AS ADDRESS, aptitle AS ADDRESS
DIM title AS STRING*32
DIM flname AS STRING*32
DIM pinput AS STRING*32

title="BASIC TEST"+chr$(0)
INPUT "Enter filename with extension", flname
flname=flname+chr$(0)
pinput=chr$(0)

apname.segment=varseg(flname)
apname.offset=varptr(flname)

apinputs.segment=varseg(pinputs)
apinputs.offset=varptr(pinputs)

aptitle.segment=varseg(title)
aptitle.offset=varptr(title)

info.cb=24
info.Related=0
info.FgBg=1
info.TraceOpt=0
info.PgmTitle=aptitle
info.PgmName=apname
info.PgmInputs=apinputs

y=DosStartSession%(info,a%,b%)

if (y) then
   print "An error occurred.  The number is : ";y
else
   Print "Successful"
   while inkey$="" :wend
end if
END

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