很方便的一个函数，有兴趣的看看！

1. /************************************************************************/  
2. /* 函数说明：判断有无Administrator的权限                                      
3. /* 参    数：无                                  
4. /* 返 回 值：成功返回TRUE，否则返回FALSE   
5. /* By:Koma   2009.07.28 23:30                               
6. /************************************************************************/  
7. BOOL IsAdmin()    
8. {    
9.     HANDLE hAccessToken;    
10.     BYTE * InfoBuffer = new BYTE[1024];    
11.     PTOKEN_GROUPS ptgGroups;    
12.     DWORD dwInfoBufferSize;    
13.     PSID psidAdministrators;    
14.     SID_IDENTIFIER_AUTHORITY siaNtAuthority = SECURITY_NT_AUTHORITY;    
15.       
16.     if(!OpenProcessToken(GetCurrentProcess(),TOKEN_QUERY,&hAccessToken))    
17.     {    
18.         delete InfoBuffer;    
19.         return FALSE;    
20.     }    
21.       
22.     if(!GetTokenInformation(hAccessToken,TokenGroups,InfoBuffer,1024,&dwInfoBufferSize))    
23.     {    
24.         delete InfoBuffer;    
25.         CloseHandle(hAccessToken);    
26.         return FALSE;    
27.     }    
28.       
29.     CloseHandle(hAccessToken);    
30.       
31.     if(!AllocateAndInitializeSid(&siaNtAuthority,    
32.         2,    
33.         SECURITY_BUILTIN_DOMAIN_RID,    
34.         DOMAIN_ALIAS_RID_ADMINS,    
35.         0,0,0,0,0,0,    
36.         &psidAdministrators))    
37.     {    
38.         delete InfoBuffer;    
39.         return FALSE;    
40.     }    
41.       
42.     ptgGroups = (PTOKEN_GROUPS)InfoBuffer;    
43.       
44.     for(UINT i = 0; i < ptgGroups->GroupCount; i++)    
45.     {    
46.         if(EqualSid(psidAdministrators,ptgGroups->Groups[i].Sid))    
47.         {    
48.             FreeSid(psidAdministrators);    
49.             delete InfoBuffer;    
50.             return TRUE;    
51.         }    
52.     }    
53.     return FALSE;    
54. }