Hello everybody,
I try to implement server push this way:
- a global instance of a class that everybody knows that contains the signal.
- thread that will emit the signal whenever necessary.
- some WContainerWidgets (represent different web pages) will connect to the
signal.
It sounds simple, but I have encountered a lot of problems and I want to
consult you.
I read that the class that contains the signal must inherit from WObject, so I
created a class like this taht is global.
The WContainerWidgets succeed in connecting the signal but when the thread
emits the signal (by invoking a method of the class that contains it), the
program collapse because of sender() method - access violation.
If the WContainerWidgets that connects to the signal emits it, it works
perfectly.
I don't understand what happens.
I understand that sender() returns the WObject that connected the signal - so
why does it work when I am inside the object, and not when the thread calls it.
Is it possible to emit signals from different threads? It sounds logically that
it is.
Thank you,
Hadas
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