A #CoglUserDataKey is used to declare a key for attaching data to a
#CoglObject using cogl_object_set_user_data. The typedef only exists as a
formality to make code self documenting since only the unique address of a
#CoglUserDataKey is used.
Typically you would declare a static #CoglUserDataKey and set private data
on an object something like this:
A #CoglUserDataKey is used to declare a key for attaching data to a #CoglObject using cogl_object_set_user_data. The typedef only exists as a formality to make code self documenting since only the unique address of a #CoglUserDataKey is used.
Typically you would declare a static #CoglUserDataKey and set private data on an object something like this:
|[ static CoglUserDataKey path_private_key;
static void destroy_path_private_cb (void *data) { g_free (data); }
static void my_path_set_data (CoglPath *path, void *data) { cogl_object_set_user_data (COGL_OBJECT (path), &private_key, data, destroy_path_private_cb); }