Qt Q Object Vtable Error
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Undefined Reference To Vtable Qt Constructor
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Qt Undefined Reference To
QObject { Q_OBJECT public: BarelySocket(); public slots: void sendMessage(Message aMessage); signals: void reciveMessage(Message aMessage); private: // QVector
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Undefined Reference To Vtable Destructor
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. http://stackoverflow.com/questions/2555816/qt-linker-error-undefined-reference-to-vtable If you are looking for information about Qt related issue — register and post your question. You are currently 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 http://www.qtcentre.org/threads/37731-QOBJECT-and-undefined-reference-to-vtable-errors 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 process or your account login, please contact us. + Reply to Thread Results 1 to 8 of 8 Thread: QOBJECT and undefined reference to vtable errors Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 11th January 2011,16:53 #1 stargazer View Profile View Forum Posts View Blog Entries View Articles Beginner Join Date Jan 2011 Posts 3 Qt products Platforms QOBJECT and undefined reference to vtable errors I've been working on a plugin to an third party application an have recently introduced a GUI dialogue module into the project. The problem is that I can't get around an error I am getting which is: undefined reference to 'vtable for StelModule' I have reduced my code down to the basics and have discovered that when I remove Q_OB
I could not shake off the following error recently, when writing a class Browser http://www.theirishpenguin.com/2007/07/01/qobject-qmake-and-sadness-undefined-reference-to-vtable.html which inherited from QObject. Apparently, the answer is that sometimes you simply have to delete your Makefiles and regenerate them using QMake (KDevelop automatically creates Makefiles http://www.qtforum.org/article/22724/error-undefined-reference-to-vtable-when-q-object-is-used.html from me if none are found), in order to get over this error. /path/to/frogface/trunk/src/browser.cpp:38: undefined reference to `vtable for Browser' browser.o: In function `Browser': /path/to/frogface/trunk/src/browser.cpp:34: undefined undefined reference reference to `vtable for Browser' /path/to/frogface/trunk/src/browser.cpp:34: undefined reference to `vtable for Browser' collect2: ld returned 1 exit status gmake[1]: *** [../bin/frogface] Error 1 gmake: *** [sub-src-make_default] Error 2 *** Exited with status: 2 *** Thanks to the patient folks on the QT mailing for the help! Funnily enough as I write this, someone’s undefined reference to just posted the following checklist on the #qt irc channel, which is good advice Make sure the Q_OBJECT macro is present in the definition of all QObject-derived classes Make sure you define your QObject-derived classes in your header files ONLY Make sure all of your header files are listed in your .profile in the HEADERS=list Run qmake every time you add Q_OBJECT to one of your classes or modify your .pro file The last one is particularly important as I’ve made an art form out of forgetting it :)
Comments Please enable JavaScript to view the comments powered by Disqus. comments powered by Disqus INFO subscribe via RSS SOCIAL theirishpenguin theirishpenguin ABOUT Ruby/JS dev. One eye on design. Occasionally stops writing code and starts writing words when the Internet is down. Thoughts and opinions expressed here are my own. If you're interested in Ruby in Ireland, be sure to check out RubyIreland.com.QtForum.org » Qt » Qt Programming » Error "undefined reference to `vtable" when Q_OBJECT is used Dear visitor, welcome to QtForum.org. If this is your first visit here, please read the Help. It explains in detail how this page works. To use all features of this page, you should consider registering. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here. Skip user information rameshg87 Beginner Posts: 5 1 Monday, October 8th 2007, 4:54am Error "undefined reference to `vtable" when Q_OBJECT is used This is the code I wrote to find factorial. #include