Deploy a Library

[cafu1007]

Hello there,

I am having problems with the deploying of the lybrary, it work properly if i use the QApplication, but i would like to use QCoreApplication so i have less libraries to deploy. but when i changed to QCoreApplication, the slots are not being called. The run of the thread is called (using start) and exec() of the thread is called within the run, but nothing is happening.

Is there any reason for this, do i have to stick to QApplication.

Thanks in advance for the help.

Cafu

[cafu1007]

Hi,


Should i start a new thread?


Carlos

[wysota]

There has to be something wrong in your code or compilation cycle. QApplication only adds the GUI layer to QCoreApplication.

[cafu1007]

Hi wysota,

it works after i add to the constructor moveToThread(this); i still do not understand exactly what this line does but after that it works with QCoreApplication. Could you explain to me?

[wysota]

it works after i add to the constructor moveToThread(this); i still do not understand exactly what this line does but after that it works with QCoreApplication.

The docs can - QObject::moveToThread().

[cafu1007]

ok, i have read then and i dont have it so clear.

but you confirm that this is what it was missing?, why was working before? QApplication set affinity of the thread or waht was going on?

i like to get things to work, but i also like to understand how it works....

[wysota]

but you confirm that this is what it was missing?

No, I don't.

why was working before? QApplication set affinity of the thread or waht was going on?

I have not seen your code so how could I confirm anything? If it does work after adding moveToThread then you should probably read about thread affinity in Qt and explanations why your code shouldn't look like what it looks like now.

You can probably start here: You're doing it wrong.

[cafu1007]

Is very interesting, so actually i should not make a class to inherit form QThread since the only thing that i need is a exec() to handles the the processing (signals and slots), but with this aproach that is proposed in Threading without the headache then i don need to use mutex and sync why is that??(this is propose there)

[wysota]

Again, I have not seen what your code does so I can't suggest an approach. I'm merely pointing out what you are doing wrong. It could be that you don't need any threads at all.

[cafu1007]

Hi there,

If use a->moveToThread (thread); the children of a also move to thread or not?

[wysota]

Yes, they do.