The GType API is the foundation of the GObject system. It provides the facilities for registering and managing all fundamental data types, user-defined object and interface types. … GObject ** object_p = collect_values [0]. v_pointer g_return_val_if_fail (object_p!= NULL, g_strdup_printf …
Pre- and post-condition assertions are implemented using g_return_if_fail() and g_return_val_if_fail (). The pre-conditions should check each parameter at the start of the function, before any other code is executed (even retrieving the private data structure from a GObject , for example, since the GObject pointer could be NULL ).
Detect g_return_if_fail(), assert(), g_return_val_if_fail () (etc.) preconditions in function bodies and add nonnull attributes if the assertions are non-NULL checks (or are GObject type checks which also assert non-nullability). Additionally, the plugin can use GIR metadata to add other attributes:, One exception to this is that in situations that are already considered to be undefined behaviour (such as when a g_return_val_if_fail() check fails), the error need not be set. Instead of checking separately whether the error is set, callers should ensure that they do not provoke undefined behaviour, then assume that the error will be set on failure.
@@ -180,8 +180,8 @@ prefs_config_notify ( GObject *config, GParamSpec *param_spec, GObject *config_copy) {GValue global_value = { 0, } GValue copy_value = { 0 …
Error Reporting : GLib Reference Manual – GNOME, Error Reporting: GLib Reference Manual – GNOME, Error Reporting : GLib Reference Manual – GNOME, Error Reporting : GLib Reference Manual – GNOME, Creates a GSimpleAsyncResult.. The common convention is to create the GSimpleAsyncResult in the function that starts the asynchronous operation and use that same function as the source_tag.. If your operation supports cancellation with GCancellable (which it probably should) then you should provide the user’s cancellable to g_simple_async_result _set_check_cancellable() immediately after this …
FFmpeg, SQLite, libxml2, GTK, libsndfile
