Problem emitting signal from a static function

[high_flyer]

how he solved it isn't really applicable in my case

and

and the overhead of creating an object, setting up the signals and connecting the to the GUI threads slots is an excessive amount of overhead I feel

Have nothing in common.
Here is the code:

static void emitMsg( unsigned long user_value,char * filename)
 {
 myclass* pthis = (myclass*)user_value; // get this address
 pthis->emit storescpProgressInfo(filename) ;
}

static void emitMsg( unsigned long user_value,char * filename)
 {
 myclass* pthis = (myclass*)user_value; // get this address
 pthis->emit storescpProgressInfo(filename) ;
}

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No allocation, no setting up connections, no nothing, just emiting a signal.
You set the connection there where the emitting and receiving object are visible, and you only need to do it once.
But then again, I don't really know what it is you are trying to do (appart from emiting a signal in a callback.).

[Valheru]

and


Have nothing in common.
Here is the code:

static void emitMsg( unsigned long user_value,char * filename)
 {
 myclass* pthis = (myclass*)user_value; // get this address
 pthis->emit storescpProgressInfo(filename) ;
}

static void emitMsg( unsigned long user_value,char * filename)
 {
 myclass* pthis = (myclass*)user_value; // get this address
 pthis->emit storescpProgressInfo(filename) ;
}

To copy to clipboard, switch view to plain text mode 

No allocation, no setting up connections, no nothing, just emiting a signal.
You set the connection there where the emitting and receiving object are visible, and you only need to do it once.
But then again, I don't really know what it is you are trying to do (appart from emiting a signal in a callback.).

You are right, the slots would only be set up when the decoder si initially created. However, it seems a bit messy. If the way I'm trying to do it now doesn't work I'll give it a shot.

[high_flyer]

But what is the way you are trying?
I am not clear on how you want to integrate QEvent in the external library?
Is it an open source lib?

[Valheru]

Was my explanation that bad?

I am decoding files in a QThread. I am doing that using an open-source library, called uulib. It is THE library for decoding Usenet multipart files, which is what my program does. Well, it downloads them, but you get the picture. Now, rather than go through all the hassle of reinventing the wheel, I link against uulib and let it decode the files for me that my program has downloaded. However, uulib is a C library, and uses function callbacks to do certain things, one of which is to display it's progress during decoding. I would like to set up a function callback, and then do some calculations in it to determine the progress so far, and then to fire off a signal to the GUI thread so that it can update a progress bar with the progress of the decoder. Hence my whole problem