out parameters in a proc

[Nate Kruse]

New to Tcl, came from the PowerBuilder (PB) land.

I did a search and didn’t see anything relevent…I’m trying to make a proc that has a few arguments.  Of the few arguments, one of them will be an “out” argument so I can return a value back to the original call and use the “out” value.  Basically, I am using the RETURN to give me one value, but I want more than one value returned to me.  I could probably RETURN an Array, but I want to know if my question is possible.

proc do something {inItem inItem2 outMsg} {

….

….

set outMsg “Testing this $inItem.”

return 5;

}

Any thoughts?  We did this all the time in PB, but not getting good results with Tcl.

Topic

[John Mercogliano]

Read up on the upvar command this should do the trick for you.

John Mercogliano
Sentara Healthcare
Hampton Roads, VA

[Michael Hertel]

I would imagine you could also…

set outMsg “Testing this $inItem.”

return

or even:

set outMsg “Testing this phrase.”

return

[Nate Kruse]

Thanks for the responses.  I’ll take a look at both options.

[Author]

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