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Calling C from IDL [message #10087]

Thu, 23 October 1997 00:00

Tron Darvann
Messages: 2
Registered: October 1997

Junior Member

Dear IDL-users,

We have a C++ program (SGI IRIX) that we wish to call from IDL
in order to provide 1) a user interface by use of IDL widgets, and
2) visualization capabilities.

The C++ program, as it is used today, needs input from the user at
several levels during execution. I wish to be able to give this input
to the C++ program FROM IDL.

I am aware of the CALL_EXTERNAL procedure, and it works well
for transferring data and parameters between IDL and the C++
application. However, I can only see how to pass and retrieve this
data when CALL_EXTERNAL is executed, not how to be able to
send data to the C++ program as it executes (e.g. by moving a
slider, or answering "y/n" to "do you want to continue?"-type
questions).

Q: Can it be done? With CALL_EXTERNAL or is there an
alternative? Any example somewhere?

Thank you in advance for any response on this, which would be
greatly appreciated.

Sincerely
Tron Darvann
3D-Lab, Copenhagen, Denmark

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Calling C from IDL

By: Tron Darvann on Thu, 23 October 1997 00:00

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