Re: gtk+-3.18.1/examples/application10 question

[Emmanuele Bassi <ebassi gmail com>]

Hi;

On 14 October 2015 at 16:50, Stefan Salewski <mail ssalewski de> wrote:
> gtk+-3.18.1/examples/application10
>
> cd application10
> glib-compile-schemas .
> glib-compile-resources exampleapp.gresource.xml --target=resources.c --generate-source
> gcc -o main main.c resources.c exampleapp.c exampleappwin.c exampleappprefs.c `pkg-config --libs --cflags 
> gtk+-3.0`

You can use the `Makefile.example` file instead.

> I am still trying to fully understand the application10 code.

This is more of an issue you have with GObject.

> When I open the preferences dialog window and close it again, above func
> tion is called twice.
>
> ./main exampleapp.c
> called example_app_prefs_dispose()
> called example_app_prefs_dispose()
>
> Is that really desired, and why does it happen?

GObject::dispose can be called multiple times, because of temporary
vivification or reference cycles. That's the reason why the
finalization step of GObject is split into two — dispose() and
finalize(). See the GObject documentation at:

  https://developer.gnome.org/gobject/stable/howto-gobject-destruction.html

Ciao,
 Emmanuele.

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