| Re: How to use the SPAWN pipe? [message #36495 is a reply to message #36493] |
Mon, 22 September 2003 23:50  |
Ricard Marxer
Messages: 2
Registered: September 2003
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Junior Member |
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Me again,
Having real problems with this pipe reading issue.
I am able to read the first line of the output of my program (the program I
spawned) but then the instruction "READF, Pipe, Line" seems to block. Is it
because it doesn't detect the end of a line??? Can someone help me out with
this one, please? Thanks
Ricard
"Ricard Marxer" <rpm51@uow.edu.au> escribi� en el mensaje
news:bko8q7$b7e$1@spacebar.ucc.usyd.edu.au...
> Hi,
>
> I want to use the SPAWN command in IDL, to run a program under Unix that
> takes a long time to finish, but while it runs it prints information in
the
> screen. I would like to print this information in a WIDGET_LIST, so I
> thought I would have to use the SPAWN command with the UNIT keyword and
then
> run a loop that will read from the pipe and add the information to the
VALUE
> of the list. This is not a problem, the problem is how to know that the
> program has finished??? Because the last line of the program might change
> in every execution.
>
> Thanks,
> Ricard
>
>
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