Parsing of custom resources: CTK+ 3 Reference Manual

Parsing of custom resources

As a consequence of the RC format going away, calling ctk_rc_parse() or ctk_rc_parse_string() won't have any effect on a widgets appearance. The way to replace these calls is using a custom CtkStyleProvider, either for an individual widget through ctk_style_context_add_provider() or for all widgets on a screen through ctk_style_context_add_provider_for_screen(). Typically, the provider will be a CtkCssProvider, which parse CSS information from a file or from a string.

Example 49. Using a custom CtkStyleProvider

CtkStyleContext *context;
CtkCssProvider *provider;

context = ctk_widget_get_style_context (widget);
provider = ctk_css_provider_new ();
ctk_css_provider_load_from_data (CTK_CSS_PROVIDER (provider),
                                 ".frame1 {\n"
                                 "   border-image: url('gradient1.png') 10 10 10 10 stretch;\n"
                                 "}\n", -1, NULL);
ctk_style_context_add_provider (context,
                                CTK_STYLE_PROVIDER (provider),
                                CTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_object_unref (provider);

Notice that you can also get style information from custom resources by implementing the CtkStyleProvider interface yourself. This is an advanced feature that should be rarely used.