[webkit-help] having trouble getting simple extensions working (C++)

Aeva Palecek aeva at lunarfracking.com
Fri Mar 25 17:14:36 PDT 2016


Someone pointed me to the solution.  For documentation's sake: I needed 
to do `extern "C" G_MODULE_EXPORT` instead of just G_MODULE_EXPORT in 
the extension module.

On Fri, Mar 25, 2016 at 3:21 PM, Aeva Palecek <aeva at lunarfracking.com> 
wrote:
> Hello!
> 
> I'm attempting to use WebKit2GTK+ to allow me to write behaviors in C 
> and expose bindings for those functions to a JavaScript environment.
> 
> I've put together a very minimal base code for this here 
> https://github.com/Aeva/webkit2gtk-experiment.  Everything seems to 
> build ok, but I am unable to find any evidence that the extension is 
> actually getting loaded.  Nothing is being written to stdout by the 
> extension, nor does "myCFunction" appear in the 'window' object of 
> the page's javascript environment as expected.
> 
> I've been able to find an igalia blog post that talk about extensions 
> and it was helpful getting this far, though it only contains very 
> partial sources so I had to guess on how it should all fit together.  
> I also found a simple web browser that has one extension, and I used 
> it as a reference https://github.com/vain/lariza but in building and 
> tinkering with the browser, I'm not 100% convince the extensions are 
> loading there either.
> 
> So I guess, what I'm hoping to find out:
> 
> 1) is there a simple canonical example somewhere of how to write and 
> use extensions and verify that they are working?
> 
> 2) if anyone has the time to look at a very small base code, is there 
> anything obviously wrong with the code in my repository linked above?
> 
> 3) if I'm completely on the wrong track, is there a simpler way to 
> expose C functions to js in webkit2gtk+?
> 
> Thanks for your time,
> Aeva Palecek
> 
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