Last modified: 9 October 2014
Name: H5Gopen
Signature:
  hid_t `H5Gopen`( hid_t `loc_id`, const char *`name` )

  hid_t `H5Gopen`( hid_t `loc_id`, const char * `name`, hid_t `gapl_id` )

Purpose:
  Opens an existing group in a file.

Description:
  `H5Gopen` is a macro that is mapped to either `H5Gopen1` or `H5Gopen2`, depending on the needs of the application.

  Such macros are provided to facilitate application compatibility. For more information on macro use and mappings, see the “API Compatibility Macros in HDF5” document.

  When both the HDF5 Library and the application are built and installed with no specific compatibility flags, `H5Gopen` is mapped to the most recent version of the function, currently `H5Gopen2`. If the library and/or application is compiled for Release 1.6 emulation, `H5Gopen` will be mapped to `H5Gopen1`. Function-specific flags are available to override these settings on a function-by-function basis when the application is compiled.

  Specific compile-time compatibility flags and the resulting mappings are as follows:

  Compatibility setting | `H5Gopen` mapping
  --- | ---
  Global settings
  No compatibility flag | `H5Gopen2`
  Enable deprecated symbols | `H5Gopen2`
  Disable deprecated symbols | `H5Gopen2`
  Emulate Release 1.6 interface`` | `H5Gopen1`
  Function-level macros
  `H5Gopen_vers = 2` | `H5Gopen2`
  `H5Gopen_vers = 1` | `H5Gopen1`

  A group created with this macro should be closed with `H5Gclose` when the group is no longer needed so that resource leaks will not develop.

Fortran90 Interface: h5gopen_f

      SUBROUTINE h5gopen_f(loc_id, name, grp_id, hdferr, gapl_id)
        IMPLICIT NONE
        INTEGER(HID_T), INTENT(IN) :: loc_id   ! File or group identifier
        CHARACTER(LEN=*), INTENT(IN) :: name   ! Name of the group
        INTEGER(HID_T), INTENT(OUT) :: grp_id  ! File identifier
        INTEGER, INTENT(OUT) :: hdferr         ! Error code
                                               ! 0 on success and -1 on failure
        INTEGER(HID_T), OPTIONAL, INTENT(IN) :: gapl_id
                                               ! Group access property list identifier
      END SUBROUTINE h5gopen_f

See Also:
  “Using Identifiers”

History:

  Release | Change
  1.8.0 | The function `H5Gopen` renamed to `H5Gopen1` and deprecated in this release. The macro `H5Gopen` and the function `H5Gopen2` introduced in this release.