Qt Error: undefined reference to `vtable for

I was receiving this error once, when I was trying to add signals & slots to one of my classes. I figured out that Qt was having problems with moc files, and there were no moc files being generated.

To solve the problem, I specified “moc directory” in the project’s .pro file:

OBJECTS_DIR = debug/obj
MOC_DIR = debug/moc

And my problem was solved

QSerialDevice Documentation

I didn’t found any doc for QSerialDevice – but what I found was a doxygen file, so I generated documentation files. Here I’m uploading them so that people can get the docs without doxygen installing.

Documentation – version 0.4.0

• HTML, zipped
• CHM

 

Qt undefined reference to QNetworkAccessManager … Error!

To resolve the error, make sure:

1. To include “network” in your .pro file: QT       += core gui network
2. Include appropriate headers:

#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkRequest>
#include <QtNetwork/QNetworkReply>