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.NET Forum / .NET Framework / Interop / January 2007CheckTokenMembership with Interop
Hi, dears! When I took example of using CheckTokenMembership() from http://msdn2.microsoft.com/en-us/library/aa376389.aspx to check IsUserAdmin() that work great in C++, but when I call the CheckTokenMembership() in csharp for user without admin rights , it returned true opposite to c++ where it return false and that what checked in example. OTOH IsMember return false as needed in this case. My question why interop change return code from false to true ? TIA Arkady >My question why interop change return code from false to true ? Without seeing any of your code, my guess will have to be that you've declared the function incorrectly. Mattias  SignatureMattias Sjögren [C# MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com Please reply only to the newsgroup. Hi, Mattias! [DllImport("advapi32.dll", SetLastError = true)] static extern bool CheckTokenMembership(IntPtr TokenHandle, IntPtr SidToCheck, out bool IsMember); bool b = false ; IntPtr TokenHandle = IntPtr.Zero; IntPtr AdministratorsGroup is correct and equal "S-1-5-32-544" ( admin group ) when I used ConvertSidToStringSid() to see result of AllocateAndInitializeSid() if (!CheckTokenMembership(TokenHandle, AdministratorsGroup, out b)) return me true where C++ code return false ( as I wrote b return correct false for such user ) TIA Arkady >>My question why interop change return code from false to true ? > > Without seeing any of your code, my guess will have to be that you've > declared the function incorrectly. > > Mattias In advance additional a liitle bit strange ( at least for me ) with interop was before when I received SID of admin group : I set [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern bool AllocateAndInitializeSid( ref byte[] pIdentifierAuthority,byte nSubAuthorityCount, int dwSubAuthority0, int dwSubAuthority1,int dwSubAuthority2, int dwSubAuthority3, int dwSubAuthority4, int dwSubAuthority5, int dwSubAuthority6, int dwSubAuthority7, out IntPtr pSid); and call it byte[] SECURITY_NT_AUTHORITY = {0,0,0,0,0,5} ; bool b = AllocateAndInitializeSid(ref SECURITY_NT_AUTHORITY, ... return pSid was wrong something like S-1-123456-1 OTOH when I changed declaration to ref byte pIdentifierAuthority instead of byte[] and call bool b = AllocateAndInitializeSid(ref SECURITY_NT_AUTHORITY[0], correct S-1-5-32-544 returned TIA Arkady > Hi, Mattias! > [DllImport("advapi32.dll", SetLastError = true)] [quoted text clipped - 25 lines] >> >> Mattias
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