[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now


DLL STL Vector

Posted on 2001-07-10
Medium Priority
Last Modified: 2013-12-14
I have my main header for my DLL, I export 1 function:

const CText __stdcall Parse (const std::wstring & wstrText, const in iLanguage);

My class CText contain vector, I got a problem.

How can I pass by parameter a vector from DLL to exe file?
Question by:fortineric
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Author Comment

ID: 6269696

Accepted Solution

elcapitan earned 100 total points
ID: 6269765
find this article in MSDN:
HOWTO: Exporting STL Components Inside & Outside of a Class

LVL 22

Expert Comment

ID: 6269798
>>  Exporting STL Components Inside & Outside of a Class
is that the right topic?   What is the article's Q ID number?

There should be nothing speciial for you to do.  i..e it should work automatically if you use the DLL version of the run-time library (RTL).  You need to use the DLL RTL whenever you share dynmically allocated memory between a DLL and an EXE where one of them alocates the memory and the other deletes it.  if you pass objects that manage memory (like strings, vectors, lists etc) between an EXE and DLL then you have this situation. i.e. code in one might allcoate and code in the other might free.  so you must use the DLL RTL.  Note that both the EXE and the DLL must use the DLL RTL.
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.


Expert Comment

ID: 6269799
And the link:
http:// support.microsoft.com / support / kb / articles / Q168 / 9 / 58.ASP

Check also this link:
http:// support.microsoft.com / support / kb / articles / Q172 / 3 / 96.ASP

LVL 22

Expert Comment

ID: 6269826
Those links don't work.  Even when the spaces are removed they still don't work.

The answer is very simple, are you sure these articles are right for the probkem?

Expert Comment

ID: 6269882
>>Those links don't work
They worked fine for me. Look for Q168958 and Q172396. If you have copy of MSDN on your local disk, you can find it there as well

>>are you sure these articles are right for the probkem?
here is the summery of the first one from MSDN:

This article demonstrates how to:

Export an instantiation of a Standard Template Library (STL) class.

Export a class that contains a data member that is an STL object.

Note that you may not export a generalized template. The template must be instantiated; that is, all of the template parameters must be supplied and must be completely defined types at the point of instantiation. For instance "stack<int>;" instantiates the STL stack class. The instantiation forces all members of class stack<int> to be generated.

Also note that some STL containers (map, set, queue, list, deque) cannot be exported. Please refer to the More Information section to follow for a detailed explanation. "

LVL 22

Expert Comment

ID: 6270623
>> Export an instantiation of a Standard Template Library (STL) class.
that isn't what this is asking for.

>> Export a class that contains a data member that is an STL object.
That isn't what this is asking for.

Expert Comment

ID: 6272357
From my previous STL experience I think that if the class CText contains a std::vector from STL, the vector template has to be instantiated first. The rules for doing that can be found in the following MSDN article: Q168958 (http://support.microsoft.com/support/kb/articles/Q168/9/58.ASP)

Both nietod and elcapitain are right, you should link to the same RTL version (debug or release) and you should instantiate the template.

Another useful article is Q172396 (http://support.microsoft.com/support/kb/articles/Q172/3/96.ASP) as elcapitain said earlier here. Though, it describes the problems when exporting a template object or a class with a member template.
LVL 11

Expert Comment

ID: 6825689
I think you forgot this question. I will ask Community Support to close it unless you finalize it within 7 days. Unless there is objection or further activity,  I will suggest to accept "nietod, elcapitan" comment(s) as suggested by ccaprar as an answer.

If you think your question was not answered at all, you can post a request in Community support (please include this link) to refund your points.
The link to the Community Support area is: http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt


Expert Comment

ID: 6875323
Per recommendation comment force/accepted by

Community Support Moderator
Experts Exchange

nietod: points for you at http://experts-exchange.com/jsp/qShow.jsp?ta=cplusprog&qid=20278061

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
Programmer's Notepad is, one of the best free text editing tools available, simply because the developers appear to have second-guessed every weird problem or issue a programmer is likely to run into. One of these problems is selecting and deleti…
The viewer will learn how to use NetBeans IDE 8.0 for Windows to connect to a MySQL database. Open Services Panel: Create a new connection using New Connection Wizard: Create a test database called eetutorial: Create a new test tabel called ee…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.
Suggested Courses

649 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