[Glade-users] How to link in a gtk+ 3.0 resource file?

[eezacque at xs4all.nl (Izak van Langevelde)]

On 07/01/15 14:41, Tristan Van Berkom wrote:
> On Wed, 2015-01-07 at 14:13 +0100, Izak van Langevelde wrote:
> > I spent some time trying to include a gtk+ 3.0 resource file into my
> > binary, without success. I created an xml file with glade, used
> > glib-compile-resources to create a c file, included it into my eclipse
> > project, get it compiled, and from there I am lost.
> I don't know about eclipse, but certainly you want to integrate it
> as a build rule for your project, rather than to manually include
> the result of glib-compile-resources directly in your build (and
> worse, commit generated files into your own source repository).
I agree, but I decided to leave build rules out of the equation, in 
order to focus on the crux of the problem.
> If I use glib-compile-resources with the --manual-register option, and I
> explicitly call menus_register_resource(), subsequent call of
> gtk_builder_new_from_resource seems to find the resource, but generates
> lots of errors like 'Gtk-CRITICAL **: gtk_settings_get_for_screen:
> assertion 'GDK_IS_SCREEN (screen)' failed'.
>
> This error does not look like it has anything to do with the actual
> resources, it looks like perhaps you tried to instantiate widgets
> before ever calling gtk_init() (wild guess).
That was the problem, indeed. I didn't call gtk_init because I call 
gtk_application_new, but gtk_builder_new_from_resource obviously needs 
the gtk_init. Thanks!
> > If I leave out the call to
> > menus_register_resource(), I get the error 'Gtk-ERROR **: failed to add
> > UI: The resource at '/com/wullie/draughts/gtk/menus.ui' does not exist'
> FWIW, gresources, if not manually registered, are registered
> automatically in constructor, such as gcc supports with the constructor
> function attribute:
>
> static void __attribute__((constructor)) some_function (void) {
>
>    /* This is called automatically when the binary is loaded,
>       somewhere before main()
>     */
>
> };
That doesn't seem to happen...
> You may try printing the value of what G_HAS_CONSTRUCTOR was at
> compile time to check that your compiler supports constructors.
It is defined, otherwise the compiler gives a warning "Constructor not 
supported on this compiler, linking in resources will not work"; I 
double-checked this. Looks like things are not working for eclipse on 
Ubuntu, I will focus on this.

Anyways, thanks for your help, I am one step further.

Thanks,
Izak


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