[SOLVED]My little,small program has problems (Ubuntu 14.04, Qt5, Code::Blocks)

[s33k3rgr]

Ok i am going to post a series of pictures i took, with some red annotations on them:

Picture 1 : My Main.cpp

!http://img42.com/kEGoO+(main.cpp)!

Picture 2 : Qt5.3 Directory on Ubuntu

!http://img42.com/rqIei+(Qt5.3 Directory structure on Ubuntu)!

Picture 3 : Additional include directories on Code::Blocks

!http://img42.com/SjOBV+(Additional include Directories)!

Picture 4 : Linker Directory i've included on Code::Blocks

!http://img42.com/2tNeM+(Directory for Linker)!

Picture 5 : Linker Libraries i point to

!http://img42.com/Kv6pO+(Linker Libraries)!

Picture 6 : Some other options

!http://img42.com/Rebew+(Other options)!

Picture 7 : And the error i am getting when i finally run the program

!http://img42.com/IR9Nd+(Error)!

This is the first time i'am trying to go into Qt5 on Ubuntu and i need to work with Code::Blocks,
because this is the IDE i am most confordable with in case someone suggest QtCreator. I know its
powerfull but i will use Qt5 only for some parts, not the whole project will be based on Qt5. Is there any good
tutorial-introduction you know about Qt5 and Linux in general?

[s33k3rgr]

The issue was that in linker settings i didn't include Qt5Widget library. I feel dump.