Application is crashing; can't understand why

[sfinix]

I am a new QT learner. Currently I am reading The Book of QT4: The Art of Building Qt Applications. I was trying to follow an example from there. The code is compiling successfully. But when I try to run the application it crashes with Segmentation fault. Here is the source files:

hello.pro
main.cpp
ByteConverterDialog.h
ByteConverterDialog.cpp

$ uname -a
$ Linux MULTIVAC 3.19.0-56-generic #62~14.04.1-Ubuntu SMP Fri Mar 11 11:03:15 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ qmake -v
$ QMake version 3.0

$ qtcreator -version
$ Qt Creator 3.0.1 based on Qt 5.2.1

Thanks!

[SGaist]

Hi and welcome to devnet,

You are not allocating decEdit, hexEdit nor binEdit in your constructor.

[sfinix]

@SGaist Thanks!