Error C2491 Definition Of Dllimport Data Not Allowed
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Error C2491 Definition Of Dllimport Function Not Allowed
in 1 second. C/C++ Building Reference C/C++ Build Errors Compiler Errors C2400 Through C2499 Compiler Errors C2400 Through C2499 Compiler Error definition of dllimport function not allowed visual studio C2491 Compiler Error C2491 Compiler Error C2491 Compiler Error C2400 Compiler Error C2401 Compiler Error C2402 Compiler Error C2403 Compiler Error C2404 Compiler Error C2405 Compiler Error C2406 Compiler Error C2407 Compiler Error definition of dllimport static data member not allowed qt C2408 Compiler Error C2409 Compiler Error C2410 Compiler Error C2411 Compiler Error C2412 Compiler Error C2413 Compiler Error C2414 Compiler Error C2415 Compiler Error C2417 Compiler Error C2418 Compiler Error C2419 Compiler Error C2420 Compiler Error C2421 Compiler Error C2422 Compiler Error C2423 Compiler Error C2424 Compiler Error C2425 Compiler Error C2426 Compiler Error C2427 Compiler Error C2428 Compiler Error C2430 Compiler Error C2431 Compiler Error C2432
Definition Of Dllimport Function Not Allowed Template
Compiler Error C2433 Compiler Error C2434 Compiler Error C2435 Compiler Error C2436 Compiler Error C2437 Compiler Error C2438 Compiler Error C2439 Compiler Error C2440 Compiler Error C2441 Compiler Error C2443 Compiler Error C2444 Compiler Error C2446 Compiler Error C2447 Compiler Error C2448 Compiler Error C2449 Compiler Error C2450 Compiler Error C2451 Compiler Error C2452 Compiler Error C2457 Compiler Error C2458 Compiler Error C2459 Compiler Error C2460 Compiler Error C2461 Compiler Error C2462 Compiler Error C2464 Compiler Error C2465 Compiler Error C2466 Compiler Error C2467 Compiler Error C2469 Compiler Error C2470 Compiler Error C2471 Compiler Error C2472 Compiler Error C2473 Compiler Error C2474 Compiler Error C2477 Compiler Error C2479 Compiler Error C2480 Compiler Error C2482 Compiler Error C2483 Compiler Error C2485 Compiler Error C2486 Compiler Error C2487 Compiler Error C2488 Compiler Error C2489 Compiler Error C2490 Compiler Error C2491 Compiler Error C2492 Compiler Error C2493 Compiler Error C2494 Compiler Error C2495 Compiler Error C2496 Compiler Error C2498 Compiler Error C2499 TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Compiler Error C2491 Visual Studio 2015 Other Versions Visual Studio 2013 V
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community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error C2491: definition of dllimport function not allowed up vote 0 down vote favorite I https://msdn.microsoft.com/en-us/library/62688esh.aspx have a problem with make a dll on Visual Studio 2013. This code works on Code::Blocks. The error was definition of dllimport function not allowed" on line void DLL_EXPORT prim(map
here for a quick overview of the site Help Center Detailed answers to any questions you might have http://stackoverflow.com/questions/17239506/c-definition-of-dllimport-function-not-allowed-building-with-visual-studio-2 Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with http://forums.codeguru.com/showthread.php?361278-error-c2491-help-me-thanks-everyone!! us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just definition of like you, helping each other. Join them; it only takes a minute: Sign up c++: definition of dllimport function not allowed, building with visual studio 2010 up vote 8 down vote favorite 2 I'm using visual studio 2010 to build a .dll. I wrote up a trial as: // trialDLL.h #ifndef TRIALDLL_H_ #define TRIALDLL_H_ // ... MyMathFuncs definition of dllimport class definition omitted #ifdef __cplusplus extern "C"{ #endif #ifdef TRIALDLL_EXPORT #define TRIALDLL_API __declspec(dllexport) #else #define TRIALDLL_API __declspec(dllimport) #endif TRIALDLL_API MyMathFuncs* __stdcall new_MyMathFuncs(double offset); TRIALDLL_API void __stdcall del_MyMathFuncs(MyMathFuncs *myMath); TRIALDLL_API double __stdcall MyAdd(MyMathFuncs* myMath, double a, double b); // some other similar stuff #ifdef __cplusplus } #endif #endif And the triallDLL.cpp file: // trialDLL.cpp #include "trialDLL.h" TRIALDLL_API MyMathFuncs* __stdcall new_MyMathFuncs(double offset) { return new MyMathFuncs(offset); } TRIALDLL_API void __stdcall del_MyMathFuncs(MyMathFuncs *myMath) { delete myMath; } TRIALDLL_API double __stdcall MyAdd(MyMathFuncs *myMath, double a, double b) { return myMath->Add(a, b); } // ... some other definitions With these two files in the project, I added a property sheet to the project through visual studio 2010 property manager and added TRIALDLL_EXPORT to user macros. After all these, the nice Intellisense gives me error for each function defined in the .cpp file and complains "error: a function declared 'dllimport' may not be defined". So it appears that Intellisense doesn't find TRIALDLL_EXPORT defined. I thought it might make a difference if I actually
Forum Visual C++ & C++ Programming Visual C++ Programming error c2491 help me, thanks everyone!! If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register or Login before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 6 of 6 Thread: error c2491 help me, thanks everyone!! Tweet Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode October 17th, 2005,09:24 AM #1 wrhclone View Profile View Forum Posts Member Join Date Dec 2004 Posts 26 error c2491 help me, thanks everyone!! hello everyone. Now I have a trouble. I want compile a dll project. In the project I define a class just like below in udt.h /*udt.h*/ class __declspec(dllimport) CUDT { public: static int INAVLID_SOCKET; .............. } I initialize it in udt.cpp int CUDT::INAVLID_SOCKET = -1; when i compile it, it produce an error: error c2491 CUDT::INAVLID_SOCKET: definition of dllimport static data member not allowed. How Can I initialize it? thanks everyone. Reply With Quote October 17th, 2005,09:39 AM #2 ovidiucucu View Profile View Forum Posts Visit Homepage Moderator/Reviewer Power Poster Join Date Feb 2003 Location Iasi - Romania Posts 8,165 Re: error c2491 help me, thanks everyone!! You must replace dllimport with dllexport, in order to export CUDT from that DLL. However, if you want to share udt.h in other module which imports CUDT, you must do something like: Code: #ifdef CUDT_DLL #define CUDT_EXP __declspec(dllexport) #else #define CUDT_EXP __declspec(dllimport) #endif class CUDT_EXP CUDT { // ... } ...and add CUDT_DLL to "Project Settings/C/C++/Preprocessor definitions" of the DLL module. Ovidiu Cucu "When in Rome, do as Romans do." My latest articles: http://codexpert.ro/blog/author/ovidiu-cucu/ Reply With Quote October 17th, 2005,09:45 AM #3 wrhclone View Profile View Forum Posts Member Join Date Dec 2004 Posts 26 thank !! thank you very much ,can you tell me why? Reply With Quote October 17th, 2005,09:55 AM #4 cilu View Profile View Forum Posts Visit Homepage Elite Member Power Poster Join Date Oct 2002 Location Timisoara, Romania Posts 14,360 Re: thank !! Because the class is exported by the DLL on one hand, and imported from the DLL by your app on the other. Marius Bancila Home Page My CodeGuru articles I do not offer technical support via PM or e-mail. Please use vbBulletin codes. Reply With Quote October 17th, 2005,