Sending signal from static class method in Qt

Question

I am trying to code a static callback function that is called frequently from another static function within the same class. My callback function needs to emit

Answer 1

You must provide a pointer to the class instance in order to make it work.

Notice however that in general it is not advised to emit signals from static functions. Static functions can be called without creating an instance of the class, which means that (if you do not provide as argument the sender and use it explicitely), you will not have a "sender" object for the emited signals.

For these cases as Lol4t0 suggests I also prefer callbacks.