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Groups > comp.os.os2.programmer.misc > #1232

Re: Debugging presentation driver

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On 29 Aug 2013 01:30:58 GMT, Alex Taylor <mail.me@reply.to.address> wrote:

> The font support itself is working.  BUT... installing the driver has
> a nasty side effect on the system.  Specifically, something seems to
> go badly wrong with standard input in VIO sessions.  Whenever I run
> CMD.EXE (windowed or fullscreen), a lengthy string of garbage appears
> at the prompt (usually, at least) and the session immediately terminates.

I have had this effect before. Unfortunately I can't remember whether
it was DOS or OS/2 command windows. Nor can I remember what the cause or
solution was.

> The nature of the symptoms strongly suggest to me that something in my
> driver is treading on internal PM memory somewhere.  The driver DLL is
> loaded by Presentation Manager itself so presumably that gives it 
> access to PM's privileged memory space.
>
> However, I'm at a loss to track this down.  I've gone through the code
> to the best of my ability, and I really can't see any place where it
> could be going wrong.

A vague memory is saying file handles to me. Can you try running Theseus
and looking at the errant processes and see if anything looks odd,
especially with regards to standard input (file handle 0)?

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Thread

Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-29 01:30 +0000
  Re: Debugging presentation driver Andreas Buchinger <SendSpam@your.address> - 2013-08-29 20:38 +0200
    Re: Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-29 19:12 +0000
      Re: Debugging presentation driver Paul Ratcliffe <abuse@orac12.clara34.co56.uk78> - 2013-08-30 00:07 +0000
        Re: Debugging presentation driver "Steven Levine" <steve53@nomail.earthlink.net> - 2013-08-30 01:08 -0500
          Re: Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-30 15:31 +0000
            Re: Debugging presentation driver "Steven Levine" <steve53@nomail.earthlink.net> - 2013-08-30 13:26 -0500
          Re: Debugging presentation driver Paul Ratcliffe <abuse@orac12.clara34.co56.uk78> - 2013-08-30 23:55 +0000
  Re: Debugging presentation driver Paul Ratcliffe <abuse@orac12.clara34.co56.uk78> - 2013-08-30 00:11 +0000
    Re: Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-30 03:07 +0000
      Re: Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-30 15:34 +0000
        Re: Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-30 22:10 +0000
  Re: Debugging presentation driver "A.D. Fundum" <what.ever@neverm.ind> - 2013-08-30 14:50 +0200
    Re: Debugging presentation driver "Alex Taylor" <mail.me@reply.to.address> - 2013-08-30 15:30 +0000
      Re: Debugging presentation driver "A.D. Fundum" <what.ever@neverm.ind> - 2013-08-30 19:30 +0200
      Re: Debugging presentation driver "Steven Levine" <steve53@nomail.earthlink.net> - 2013-08-30 13:29 -0500
        Re: Debugging presentation driver "A.D. Fundum" <what.ever@neverm.ind> - 2013-08-30 21:19 +0200

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