@jsulm the data that is sent is in the form of a char array, example,

char message[] = "message here";

I use QString because before I was using std::string and I was getting errors when trying to submit that to the line edit, I think conversion type errors, using a QString removed that error and thus I just stuck with it.

edit: oh it is working now, I feel like we didnt change anything though and we were just going through debug statements

not sure how you handle your mqtt messages in qt code. Qt has a mqtt module and you may take a look at it.
I guess you may not need a timer. Instead, you create a signal with info when the message comes and connect that signal with any other qt qwidgets for update.
No check is needed as well.

@Christian-Ehrlicher oh ok haha :D Thanks for reminding me tho

@Pablo-J.-Rogina
Thanks for the time to make example code.
It didn't work straight away, this because I use qt4.8 and you the newer one probably.
So I changed your code to the older syntax to get it working.

I would like to thank you and all others for there help!
Again I learned a lot!

Thanks for helping!