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accesscheck (advapi32)
 
.
Summary
The AccessCheck function determines whether a security descriptor grants a specified set of access rights to the client identified by an access token. Typically, server applications use this function to check access to a private object.

C# Signature:

  [DllImport("advapi32", SetLastError=true)]
  static extern bool AccessCheck(
    [MarshalAs(UnmanagedType.LPArray)]
    byte [] pSecurityDescriptor,
    IntPtr ClientToken,
    uint DesiredAccess,
    [In] ref GENERIC_MAPPING GenericMapping,
    IntPtr PrivilegeSet,
    ref uint PrivilegeSetLength,
    out uint GrantedAccess,
    out bool AccessStatus);

VB.NET Signature:

  <DllImport("advapi32", SetLastError:=true)> _
  Public Function AccessCheck(pSecurityDescriptor As IntPtr, _
       ClientToken As IntPtr, _
       DesiredAccess As Integer, _
       ByRef GenericMapping As GENERIC_MAPPING, _
       ByRef PrivilegeSet As IntPtr, _
       ByRef PrivilegeSetLength As Integer, _
       <Out()> ByRef GrantedAccess As Integer, _
       <Out()> <MarshalAs(UnmanagedType.Bool)> ByRef AccessStatus As Boolean) As <MarshalAs(UnmanagedType.Bool)> Boolean
  End Function

VB Signature:

  Declare Function AccessCheck Lib "advapi32.dll"( _
    ByVal pSecurityDescriptor As IntPtr, _
    ByVal ClientToken As IntPtr, _
    ByVal DesiredAccess As Integer, _
    ByRef GenericMapping As GENERIC_MAPPING, _
    ByRef PrivilegeSet As IntPtr, _
    ByRef PrivilegeSetLength As Integer, _
    <Out()> ByRef GrantedAccess As Integer, _
    <Out()> ByRef AccessStatus As Boolean) As Boolean

User-Defined Types:

GENERIC_MAPPING

Alternative Managed API:

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Notes:

None.

Tips & Tricks:

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Sample Code:

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Documentation
AccessCheck on MSDN

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