REG_DELETE_VALUE, DISPLAY_REG_DELETE_VALUE

Deletes a named value from a specified registry key.
Note: This ACUCOBOL-GT library routine is available in this COBOL version. Any compatibility issues in this COBOL system are in the Compatibility Issues section at the end of the topic.

Use DISPLAY_REG_DELETE_VALUE when you want the action to be performed on the display host's registry (the local host when the application is run with a standard runtime; the thin client when the application is run with the thin client). Use REG_DELETE_VALUE when you want the action to be performed on the server host's registry (the local host when the application is run with a standard runtime, and the application host when the application is run with the thin client).

Usage

CALL "REG_DELETE_VALUE"
    USING OPEN-KEY-HANDLE, VALUE-NAME,
    GIVING STATUS-CODE

Parameters

OPEN-KEY-HANDLE Usage unsigned-long Handle of a currently open key or one of the following predefined handles of keys that are always open (defined in acugui.def):
  • HKEY_CLASSES_ROOT
  • HKEY_CURRENT_USER
  • HKEY_LOCAL_MACHINE
  • HKEY_USERS
VALUE-NAME PIC X(n) Name of the value to delete. If NULL or an empty string, the value set by REG_SET_VALUE will be deleted.
STATUS-CODE Numeric data item. Receives the return status of call to Microsoft's RegDeleteValue function. A return status of zero indicates success; non-zero indicates that an error occurred.

Comments

The key identified by OPEN-KEY-HANDLE must have been opened with KEY_SET_VALUE access (KEY_WRITE access includes KEY_SET_VALUE access).

Compatibility Issues

  • REG_DELETE_VALUE is a Windows-only routine.
  • DISPLAY_REG_DELETE_VALUE is not supported.
  • acugui.def is not supplied in this COBOL system.
  • Thin client technology is not supported in this COBOL system.