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The AddAce function adds one or more ACEs to a specified ACL. An ACE is an access-control entry. An ACL is an access-control list.

Declare Function AddAce Lib "advapi32.dll" (ByVal pAcl As Long, ByVal dwAceRevision As Long, ByVal dwStartingAceIndex As Long, ByVal pAceList As Long, ByVal nAceListLength As Long) As Long

Operating Systems Supported
Requires Windows NT 3.1 or later; Win9x/ME: Not supported


Parameter Information
- pAcl
[in/out] Pointer to an ACL structure. This function adds an ACE to this ACL.

- dwAceRevision
[in] Specifies the revision level of the ACL being modified.
Windows NT 4.0 and earlier: This value must be ACL_REVISION.
Windows 2000: This value can be ACL_REVISION or ACL_REVISION_DS. Use ACL_REVISION_DS if the ACL contains object-specific ACEs.

- dwStartingAceIndex
[in] Specifies the position in the ACL's list of ACEs at which to add new ACEs. A value of zero inserts the ACEs at the beginning of the list. A value of MAXDWORD appends the ACEs to the end of the list.

- pAceList
[in] Pointer to a list of one or more ACEs to be added to the specified ACL. The ACEs in the list must be stored contiguously.

- nAceListLength
[in] Specifies the size, in bytes, of the input buffer pointed to by the pAceList parameter.

Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Last update: 07 April 2006