Last modified: 18 August 2010
Name: H5Tlock
Signature:
herr_t H5Tlock( hid_t dtype_id )

Purpose:
Locks a datatype.

Description:
H5Tlock locks the datatype specified by the dtype_id identifier, making it read-only and non-destructible. This is normally done by the library for predefined datatypes so the application does not inadvertently change or delete a predefined type. Once a datatype is locked it can never be unlocked.

Parameters:
hid_t dtype_id     IN: Identifier of datatype to lock.

Returns:
Returns a non-negative value if successful; otherwise returns a negative value.

Fortran90 Interface:
None.