error unresolved externals

[Maleesh]

what is a correct program solution ?

For that please do read some about mutex/locks.

and i get this message :

It says what is the issue. There is no slot called "oneNumberChanged" which does not take any arguments. Try to use as "oneNumberChanged(int)" when connecting the slot.

[smemamian]

I'm using this tutorial,plz look this address :

http://www.youtube.com/watch?v=PR6wV...1942A4688E9D63

c++ Qt 31 - QThread part 4 ...

[Maleesh]

I'm using this tutorial,plz look this address :

http://www.youtube.com/watch?v=PR6wV...1942A4688E9D63

c++ Qt 31 - QThread part 4 ...

OMG! Did you see that first comment for the video ? For mutex, see this example in qt docs and this question.

[lunharis]

I got the same error today.

QMutex: destroying locked mutex

[ahmetkarakas]

you have to first set the stop parameter false.
Also write in start button clicked like this myThread -> stop =false; and than myThread -> start();