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Clarion in general: Passing multiple parameters as Group 2004-10-26 -- Jim Gambon Newsgroups: softvelocity.clarion.language
> Since all of these Variables need to be "Passed by Address", could I simply
> use a Group and pass the entire Group to each of the functions?
You will have to do one of two things, if you want to pass this all as a
group.
You could have the group be a group of LONGs that hold the addresses. Then,
in the receiving procedure, re-cast these into the various types of
reference variables (&CSTRING, &ULONG, &STRING, etc.) The only problem with
this is that string type reference variables hold a data size value in
addition to the memory address. Not having the size messes up some
operations like CLEAR and string-slicing.
The other way would be to have the group be a group of reference variables
that you assign in the calling procedure. The only downside to this is that
you will have to take the extra step of having each individual variable
available to reference assign to the appropriate member of the group. Once
you pass the group the receiving procedure should be able to use the member
items as is.
Oh, and don't forget that you can pass the group by address as well once you
have it defined as a "type".
Just some thoughts. Let me know if this is clear, or if you need some code
specifics (like for the casting). And let us know how it works out for you
Regards,
Jim
Today is April 18, 2024, 11:37 pm This article has been viewed 35120 times. Google search has resulted in 14 hits on this article since January 25, 2004.
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