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Re: Passing strings by Spawn [message #59825]

Fri, 18 April 2008 10:31

Anthony[1]
Messages: 20
Registered: December 2006

Junior Member

Hi Alex,

On Apr 18, 12:48 pm, alex...@gmail.com wrote:
> Hello Everyone!
>
> I need to open an exe file using IDL, and pass a few string arguments
> (like as if it was a .c file)
> Anyway, I gathered I can use the Spawn command, and it does work,
> except for one issue.
>
> The arguments I pass to the exe file, are variables which contain
> strings. However, when I pass it by the Spawn command, the exe file
> receives the variables names rather than the strings themselves, which
> is quite silly.
> Since I get those string names from another function, I can't manually
> type them to the Spawn command (althought that would work)
>
> Can anyone give me some advice, should I use another command, or maybe
> some way to make Spawn like my variables more?
>
> Cheers, Alex

Is it something like this, or have I misunderstood?

spawn, 'exe_name ' + string_arg_1 + ' ' + string_arg_2

Cheers,

Anthony

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Re: Passing strings by Spawn [message #59827 is a reply to message #59825]

Fri, 18 April 2008 09:57

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On Apr 18, 5:48 am, alex...@gmail.com wrote:
> Hello Everyone!
>
> I need to open an exe file using IDL, and pass a few string arguments
> (like as if it was a .c file)
> Anyway, I gathered I can use the Spawn command, and it does work,
> except for one issue.
>
> The arguments I pass to the exe file, are variables which contain
> strings. However, when I pass it by the Spawn command, the exe file
> receives the variables names rather than the strings themselves, which
> is quite silly.
> Since I get those string names from another function, I can't manually
> type them to the Spawn command (althought that would work)
>
> Can anyone give me some advice, should I use another command, or maybe
> some way to make Spawn like my variables more?
>
> Cheers, Alex

Just make sure the variable names are not quoted:

spawn, 'myprog ' + var1 + ' ' + var2

Mike
--
www.michaelgalloy.com
Tech-X Corporation
Software Developer II

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