Struct

CoglUserDataKey

Description [src]

struct CoglUserDataKey {
  int unused;
}

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 (CoglPipeline *pipeline, void *data)
{
  cogl_object_set_user_data (COGL_OBJECT (pipeline),
                             &private_key,
                             data,
                             destroy_pipeline_private_cb);
}

Structure members

unused

Ignored.

Available since:

1.4