Error C2491 Definition Of Dllimport Static Data Member Not Allowed
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Warning C4273: Inconsistent Dll Linkage
that implements your class. The member functions and static data members are thus defined in the DLL, and defining them again in your program is an error. If you are trying to write the code for the DLL that implements this class (and thus defines the member functions and static data members) then you need to mark the class __declspec(dllexport) instead. It is common to use a macro for this. When building your DLL you define a macro BUILDING_MYDLL or similar. In your header for MyClass you then have: #ifdef BUILDING_MYDLL #define MYCLASS_DECLSPEC __declspec(dllexport) #else #define MYCLASS_DECLSPEC __declspec(dllimport) #endif class MYCLASS_DECLSPEC MyClass { ... }; This means that you can share the header between the DLL and the application that uses the DLL. share|improve this answer answered Aug 16 '10 at 9:58 Anthony Williams 40.7k586126 Here is the corresponding cite on Microsoft's page: "Using __declspec(dllimport) is optional on function declarations [...]. However, you must use __declspec(dllimport) for the importing executable to access the DLL's public data symbols and objects. Note that the users of your DLL still need to link with an import library." –Jonny Dee Oct 9 '14 at 11:04 add a comment| up vote 2 down vote From MSDN Documentation, When you declare a class dllimport, all its member functions and static data members are imported. Unlike the behavior of dllimport and dllexport on non
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Qt Inconsistent Dll Linkage
Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers __declspec(dllimport) Retired content Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected __declspec(dllimport) example in 1 second. C/C++ Building Reference C/C++ Build Errors Compiler Errors C2400 Through C2499 Compiler Errors C2400 Through C2499 Compiler Error C2491 Compiler Error C2491 Compiler Error http://stackoverflow.com/questions/3491990/c-definition-of-dllimport-static-data-member 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 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 https://msdn.microsoft.com/en-us/library/62688esh.aspx 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 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 Co
dllimport static data member not allowed If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click http://www.qtcentre.org/threads/45040-staticMetaObject-definition-of-dllimport-static-data-member-not-allowed the register link above to proceed. To start viewing messages, select the forum that https://sourceforge.net/p/qzxing/discussion/general/thread/f1f9363f/ you want to visit from the selection below. Welcome to Qt Centre. Qt Centre is a community site devoted to programming in C++ using the Qt framework. Over 90 percent of questions asked here gets answered. If you are looking for information about Qt related issue — register and post your question. You are currently definition of viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration definition of dllimport process or your account login, please contact us. + Reply to Thread Results 1 to 3 of 3 Thread: 'staticMetaObject' : definition of dllimport static data member not allowed Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 5th October 2011,09:25 #1 alex1 View Profile View Forum Posts View Blog Entries View Articles Beginner Join Date Aug 2011 Posts 7 Qt products Platforms 'staticMetaObject' : definition of dllimport static data member not allowed Hi all. I am creating a DLL on Windows XP (i'm use 2005 Professional Edition) VC 2005 error: After compilation , I get an error code from "Moc'ing imgdll.h ..." Help understand what is going? I have following files: ===================ImgDll_global.h================ ==== #ifndef IMGDLL_GLOBAL_H #define IMGDLL_GLOBAL_H #include
for the ZXing decoding library. Brought to you by: favoritas Summary Files Reviews Support Wiki Code Tickets Discussion Create Topic Stats Graph Forums General Discussion 19 Help Formatting Help definition of dllimport static data member not allowed Forum: General Discussion Creator: Matos Created: 2013-12-05 Updated: 2013-12-27 Labels: Matos - 2013-12-05 Hi all, I am a newbie in Qt and c++ development so bear with me a little bit. I am using the Qt_4_7_4_Desktop_MSVC2008 library of this project version 2.2. I am also using the Qt 4.8.1 and MSVC2010. I was able to import the library and .h files to my project. But when I recompile I get this errors: \GeneratedFiles\moc_QZXing.cpp:181: error: C2491: 'QZXing::staticMetaObjectExtraData' : definition of dllimport static data member not allowed \GeneratedFiles\moc_QZXing.cpp:185: error: C2491: 'QZXing::staticMetaObject' : definition of dllimport static data member not allowed Among several warning similar to: \GeneratedFiles\moc_QZXing.cpp:185: warning: C4273: 'staticMetaObject' : inconsistent dll linkage Is this due to the fact that I am using MSVC2010? Is there any one else that are experiencing the same problems? Thanks in advance. If you would like to refer to this comment somewhere else in this project, copy and paste the following link: Anonymous Cancel Add attachments You seem to have CSS turned off. Please don't fill out this field. You seem to have CSS turned off. Please don't fill out this field. Nikolaos Ftylitakis - 2013-12-27 Hello Matos, sorry for the delay. Most likely, you are missing the define macro DISABLE_LIBRARY_FEATURES. This macro disables all the library definitions Normally this is predefined in the QZXing.pri but for some reason it looks like you are missing it. Waiting for your reply. If you would like to refer to this comment somewhere else in this project, copy and paste the following link: Anonymous Cancel Add attachments You seem to have CSS turned off. Please don't fill out this field. You seem to have CSS turned off. Please don't fill out this field. Anonymous Cancel Add attachments You seem to have CSS turned off. Please don't fill out this field. You seem to have CSS turned off. Please don't fill out this field. SourceForge About Site Status @sfnet_ops Powered by Apache Allura™ Find and Develop Software Create a Project Software Directory Top Downloaded Projects Community