Error Vtable For Qt
Contents |
here for a quick overview of the site Help Center Detailed answers to any undefined reference to vtable qt qobject questions you might have Meta Discuss the workings and policies
Undefined Reference To Vtable Qt Cmake
of this site About Us Learn more about Stack Overflow the company Business Learn more
Qt Undefined Reference To Vtable For Constructor
about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack
Qt Undefined Reference To Function
Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Qt undefined reference to vtable [duplicate] up vote 13 down vote favorite 2 This question already has an answer here: Qt Linker Error: “undefined reference to vtable” 8 answers undefined reference to signal qt I am a beginner to Qt programming and use codeblocks for my programming. I created 3 files communicate.h,commmunicate.cpp and main.cpp as follows: communicate.h #ifndef COMMUNICATE_H #define COMMUNICATE_H #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta undefined reference to staticmetaobject Discuss the workings and policies of this site About Us Learn undefined reference to vtable for class qobject more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us error: undefined reference to `vtable for 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 like http://stackoverflow.com/questions/14010922/qt-undefined-reference-to-vtable you, helping each other. Join them; it only takes a minute: Sign up Qt: Signals and slots Error: undefined reference to `vtable for up vote 18 down vote favorite 1 Following example from this link: http://developer.kde.org/documentation/books/kde-2.0-development/ch03lev1sec3.html #include
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 the register link above to proceed. To start viewing http://www.qtcentre.org/threads/48602-undefined-reference-to-vtable-error messages, select the forum that 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 http://www.cplusplus.com/forum/general/37958/ asked here gets answered. 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 undefined reference 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 process or your account login, please contact us. + Reply to Thread Results 1 to 5 undefined reference to of 5 Thread: undefined reference to vtable error Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 20th April 2012,13:53 #1 PaulDaviesC View Profile View Forum Posts View Blog Entries View Articles Beginner Join Date Apr 2012 Posts 2 Thanks 2 Qt products Platforms undefined reference to vtable error Here is a simple Qt code I have written to study signals and slots concept :- Qt Code: Switch view #include
vtable" message from g++, and I have no idea why. I have one class which inherits from qwidget, defined like this: 1
2
3
4
5
6
7
8
9
10
11
12
#ifndef FCRYPT #define FCRYPT #include "ui_fcrypt.h" class FCrypt : public QWidget, private Ui::FCrypt_window { Q_OBJECT public: FCrypt(QWidget *parent = 0); }; #endif and implemented like this (for the time being): 1
2
3
4
5
#include "fcrypt.h" FCrypt::FCrypt(QWidget *parent) { setupUi(this); } This is the output from make: release/fcrypt.o:fcrypt.cpp:(.text+0x2b): undefined reference to `vtable for FCr ypt' release/fcrypt.o:fcrypt.cpp:(.text+0x32): undefined reference to `vtable for FCr ypt' release/fcrypt.o:fcrypt.cpp:(.text+0x8f): undefined reference to `vtable for FCr ypt' release/fcrypt.o:fcrypt.cpp:(.text+0x96): undefined reference to `vtable for FCr ypt' collect2: ld returned 1 exit status make[1]: *** [release\FCrypt.exe] Error 1 make[1]: Leaving directory `C:/Users/terry/Desktop/FCrypt' make: *** [release] Error 2 I've done this a dozen times before, but this is the first time I'm having this problem. Any ideas? Mar 4, 2011 at 2:00pm UTC simeonz (490) http://bytes.com/topic/c/answers/161894-undefined-reference-vtable#post623578 (When I get errors that I don't understand, I google them and in 99% of the cases something useful shows up in the first few hits. Just for future reference ;) Regards Mar 5, 2011 at 8:56am UTC fafner (377) Thanks, but that doesn't really answer the problem. The cause for the error in the question in your link was a missing implementation of a declared virtual method, but none of this is the case for me. Mar 5, 2011 at 9:19am UTC simeonz (490) No, that was not the idea. The cause is not missing implementation of a declared virtual method as you say, but the lack of translation unit (.cpp file) that implements at least one non-inline member function specifically for this class. If you think carefully, you will see that those are different things. The compiler needs this so that it can determine in which object file it has to dump the vtable and other