Re: TaskWindow Messages - output

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From	Paul Stewart <phorefaux@gmail.com>
Newsgroups	comp.sys.acorn.programmer
Subject	Re: TaskWindow Messages - output
Date	Thu, 12 Mar 2026 20:32:37 GMT
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In message <5cb81f53e1News04@avisoft.f9.co.uk>
          Martin <News04@avisoft.f9.co.uk> wrote:

> In article <88a00ab85c.Paul@phorefaux>,
>    Paul Stewart <phorefaux@gmail.com> wrote:
>> In message <85de05b85c.harriet@bazleyfamily.co.uk>
>>           Harriet Bazley <harriet@bazleyfamily.co.uk> wrote:

>>> On 11 Mar 2026 as I do recall,
>>>           Paul Stewart  wrote:

>>>>>> Now I'm thinking I should be listening for &808C1
>>>>>> (TaskWindow_Output) to receive the contents of the TaskWindow.
>>>>>>  Is that correct?
>>>> 
>>>>> Yes, that is how you see the output to display yourself,
>>>>> interrogate, or lose.

>>> [snip]

>>>> Issue I have is that I am not receiving the &808C1 message.
>>>> 
>>>> I get the &808C3 when it has finished, but I also want the
>>>> output that would usually be in the Task Window (if I was to
>>>> manually run it, rather than run via Wimp_StartTask).
>>>> 
>>> I've never tried to intercept and display taskwindow output
>>> manually, but is it possible that you have to register yourself
>>> as an official 'taskwindow handler' with the Wimp first in order
>>> to prevent its being intercepted and displayed by Edit or
>>> StrongED or some other recognised handler?

>>> And - the usual question - have you added TaskWindow_Output to
>>> the list of Wimp messages to be passed on to Wimp_Poll, or is it
>>> getting masked out by default?

>> Well at the moment I have added &808C0 - &808C6 to Wimp messages

>> Looking at PRM3, page 263,TaskWindow_Ouput  - this message is sent
>> to the Parent when one of it's children has produced output.

> What command have you passed to the TaskWindow command?
> What did you provide for the -task and -txt values?

Hi all, thanks for your replies and Martin, thanks for the email.

After going down what feels like a couple of rather large rabbit holes, I 
finally go the bottom of the issue.

My TaskWindow routines were fine.
The issue was with the command I was passing to Wimp_StartTask.

I was using a flag to generate a log file.  I had not appreciated that the 
flag was log file or task window output.

-- 
Paul Stewart
Sent from A9home running RISC OS 4.42

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TaskWindow Messages - output Paul Stewart <phorefaux@gmail.com> - 2026-03-11 12:29 +0000
  Re: TaskWindow Messages - output Martin <News04@avisoft.f9.co.uk> - 2026-03-11 13:11 +0000
    Re: TaskWindow Messages - output Paul Stewart <phorefaux@gmail.com> - 2026-03-11 17:51 +0000
      Re: TaskWindow Messages - output Harriet Bazley <harriet@bazleyfamily.co.uk> - 2026-03-11 18:50 +0000
        Re: TaskWindow Messages - output Paul Stewart <phorefaux@gmail.com> - 2026-03-11 19:42 +0000
          Re: TaskWindow Messages - output Martin <News04@avisoft.f9.co.uk> - 2026-03-11 23:28 +0000
            Re: TaskWindow Messages - output Paul Stewart <phorefaux@gmail.com> - 2026-03-12 20:32 +0000

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