Re: Coding examples (Re: VMS Pascal article)

On 1/5/2025 11:06 AM, Arne Vajhøj wrote:

On 1/4/2025 11:19 PM, David Meyer wrote:

Arne Vajhøj <arne@vajhoej.dk> writes:

$ search sys$common:[syshlp.examples.pascal]*.pas varying
$ search sys$common:[syshlp.examples.pascal]*.pas "string("

>
Wow! That directory and the others around it are a real treasure
trove. I found answers to questions I had about calling RTL routines
from Pascal.

 For system services and LIB$ (and other RTL) routines, then
I recommend:
 General prep:
1) browse through documentation for system services and LIB$
    routines to get an overview
2) learn about the VMS calling convention
3) learn about how to use VMS calling convention
    in your favorite programming language
For specific task:
A) identify the system services and LIB$ routine you need
    to use
B) read the language independent description of how to call it
C) implement call in your favorite programming language

For specific questions then you can always ask here (or at
the VSI forum).
There is a fair chance that someone has tried it before and
maybe even have an example laying around.
I have written a few things that may be useful.
 From the article that is the topic:
   https://www.vajhoej.dk/arne/articles/vmspascal.html#proc_nonpas
   https://www.vajhoej.dk/arne/articles/vmspascal.html#mod     (scroll down a page)
Other:
   https://www.vajhoej.dk/arne/articles/call4.html#vms
And Pascal examples in:
   https://www.vajhoej.dk/arne/articles/vmsipc.html
   https://www.vajhoej.dk/arne/articles/rms.html
Arne