Sets the contents of a G_TYPE_BOXED derived GValue to v_boxed and takes over the ownership of the callers reference to v_boxed; the caller doesn't have to unref it any more. Since 2.4
duplicated unowned boxed value to be set. [allow-none]
See Implementation
Sets the contents of a G_TYPE_BOXED derived GValue to v_boxed and takes over the ownership of the callers reference to v_boxed; the caller doesn't have to unref it any more. Since 2.4