Solved

C++/Statistica DLL problem

Posted on 1999-01-05
1
236 Views
Last Modified: 2006-11-17
When a program loads, and it is dependant on a DLL, does it load the dll in memory at startup and then refer to it as nescessary, or does the dll only get loaded when it is required and then disposed of when finished. I would be tempted to think the first option, but I need some confirmation. My problem is that I have to write a DLL in C++ to be used by STATISTICA that returns a different set of data each time it is called, and want to use a static variable to keep track of which set I am up to. I had also considered using a temporary file, but that seems like a fair bit of hassle to go to for a test rig.
0
Comment
Question by:tgemini
1 Comment
 
LVL 7

Accepted Solution

by:
faster earned 50 total points
ID: 1181604
It depends on how the dll is called by the exe, if the exe use LoadLibrary() and FreeLibrary() explicitely, you will have the 2nd case, otherwise 1st case.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Unlike C#, C++ doesn't have native support for sealing classes (so they cannot be sub-classed). At the cost of a virtual base class pointer it is possible to implement a pseudo sealing mechanism The trick is to virtually inherit from a base class…
C++ Properties One feature missing from standard C++ that you will find in many other Object Oriented Programming languages is something called a Property (http://www.experts-exchange.com/Programming/Languages/CPP/A_3912-Object-Properties-in-C.ht…
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.

932 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

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now