Upon errors false will be returned and error will be assigned a
glib.error.ErrorG from the GTK_BUILDER_ERROR, G_MARKUP_ERROR or
G_VARIANT_PARSE_ERROR domain.
It’s not really reasonable to attempt to handle failures of this
call. The only reasonable thing to do when an error is detected is
to call g_error().
Parses a string containing a UI definition and merges it with the current contents of builder.
This function is useful if you need to call gtk.builder.Builder.setCurrentObject to add user data to callbacks before loading gtk.builder.Builder UI. Otherwise, you probably want gtk.builder.Builder.newFromString instead.
Upon errors false will be returned and error will be assigned a glib.error.ErrorG from the GTK_BUILDER_ERROR, G_MARKUP_ERROR or G_VARIANT_PARSE_ERROR domain.
It’s not really reasonable to attempt to handle failures of this call. The only reasonable thing to do when an error is detected is to call g_error().