C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Calling VB6 Dll From C++          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message Ram Guest Posted: Sun Nov 27, 2005 11:01 am    Post subject: Calling VB6 Dll From C++ Hey, I have a Dll I created in VB6 and when I'm trying to use it from C++ using the following code: MyNS::MyClassPtr obj; obj = new MyNS::MyClass(); I get the following error: C2559: Cannot Instantiate An Abstract Class But when I try and use the same Dll from a VB6 or .Net (using Interop) application everything works perfectly well! Any ideas? Thanks ahead --Ram Back to top John Harrison Guest Posted: Sun Nov 27, 2005 4:19 pm    Post subject: Re: Calling VB6 Dll From C++ Ram wrote: Quote: Hey, I have a Dll I created in VB6 and when I'm trying to use it from C++ using the following code: MyNS::MyClassPtr obj; obj = new MyNS::MyClass(); I get the following error: C2559: Cannot Instantiate An Abstract Class But when I try and use the same Dll from a VB6 or .Net (using Interop) application everything works perfectly well! Any ideas? Thanks ahead --Ram You are probably meant to use a factory method or class to instantiate the object. Something like this // factory class MyNS::MyClassFactory factory; MyNS::MyClassPtr ptr = factory.create(); or this // factory method MyNS::MyClassPtr ptr = MyNS::MyClass::create(); but without knowing anything about VB6 or .NET I couldn't say precisely what you need to do, but it's likely to be something on the above lines. john Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ language (comp.lang.c++) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.