Improve company productivity with a Business Account.Sign Up

x
?
Solved

Hexadecimal value arrives in front of string parameter passed to VB6 class

Posted on 2011-02-21
3
Medium Priority
?
275 Views
Last Modified: 2012-05-11
Hi...

I have this Windows Process project written in VB.Net 2003, which calls a couple of functions from a VB6 class I wrote, with string parameters in both of them

Weird thing is that, when debugging the application, I found that the parameters I send to the class arrive with an hexadecimal value in front of the actual value

Example: I send "0009" and the class receives this: 0x001b6ab4 "0009"

Any hints??

Thanks
0
Comment
Question by:JohnP_Realini
  • 2
3 Comments
 
LVL 14

Expert Comment

by:Brook Braswell
ID: 34946737
Could you show the code you use to define and call your class in .net

and show the class with the defined parameter in vb6

It is hard to discern what your potential problem is without knowing how your parameter is defined in vb6.  If it is not defined with any type then it will assume Variant.
0
 
LVL 3

Author Comment

by:JohnP_Realini
ID: 34950677
Thanks for getting into this

In .Net first I add the class as a reference, then I do an Import (Import BioIDdll) and last  instance the class (Private Bio as New BioIDdll.BioID)

Then I start calling the methods sending parameters (all are string) and I receive them in the class with "ByVal", and for what I have been investigatin, the hexadecimal value I am receiving is the memory position pointer

If I change the way I receive it (using ByRef) I only get the pointer, and not the data

The question now is... How do I handle that information, so I can use the data stored in that memory position

Thanks!
0
 
LVL 14

Accepted Solution

by:
Brook Braswell earned 2000 total points
ID: 34951229
I am not sure why you are getting the pointer, but perhaps you can mod the vb6 portion to parse out the pointer and keep the value...
Seeing that the value is in double quotes, parsing should be easy.
0

Featured Post

What Kind of Coding Program is Right for You?

There are many ways to learn to code these days. From coding bootcamps like Flatiron School to online courses to totally free beginner resources. The best way to learn to code depends on many factors, but the most important one is you. See what course is best for you.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This article will show how Aten was able to supply easy management and control for Artear's video walls and wide range display configurations of their newsroom.
Simulator games are perfect for generating sample realistic data streams, especially for learning data analysis. It is even useful for demoing offerings such as Azure stream analytics, PowerBI etc.
An introduction to basic programming syntax in Java by creating a simple program. Viewers can follow the tutorial as they create their first class in Java. Definitions and explanations about each element are given to help prepare viewers for future …
In this fourth video of the Xpdf series, we discuss and demonstrate the PDFinfo utility, which retrieves the contents of a PDF's Info Dictionary, as well as some other information, including the page count. We show how to isolate the page count in a…

595 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question