addFromFile

Parses a file containing a UI definition and merges it with the current contents of @builder.

This function is useful if you need to call method@Gtk.Builder.set_current_object) to add user data to callbacks before loading GtkBuilder UI. Otherwise, you probably want ctor@Gtk.Builder.new_from_file instead.

If an error occurs, 0 will be returned and @error will be assigned a GError from the GTK_BUILDER_ERROR, G_MARKUP_ERROR or G_FILE_ERROR domains.

It’s not really reasonable to attempt to handle failures of this call. You should not use this function with untrusted files (ie: files that are not part of your application). Broken GtkBuilder files can easily crash your program, and it’s possible that memory was leaked leading up to the reported failure. The only reasonable thing to do when an error is detected is to call g_error().

Parameters