A quick snippet for listing all the properties and signals of a GObject. Something I've ended up using far more often than you would think.

gobject-list-properties-signals.c

// We have an object of type MyObject called 'obj'
// To use:
// replace 'obj' with your var name
// replace 'MY_TYPE_OBJECT' with the object's gtype

// snip

guint n_props;
GParamSpec **params = g_object_class_list_properties (G_OBJECT_GET_CLASS (obj), &n_props);
for (guint i = 0; i < n_props; i++)
{
    GParamSpec *spec = params[i];
    g_print ("%s\n", g_param_spec_get_name (spec));
}

guint n_ids;
guint *ids = g_signal_list_ids (MY_TYPE_OBJECT, &n_ids);
for (guint i = 0; i < n_ids; i++)
{
    guint id = ids[i];
    g_print ("%s\n", g_signal_name (id));
}