判断当前用户是否为管理员


Unit Unit1;
Inte易做图ce
Uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs;
Type
  TForm1 = Class(TForm)
    Procedure FormCreate(Sender: TObject);
  Private
    { Private declarations }
  Public
    { Public declarations }
  End;
Var
  Form1: TForm1;
Implementation
{$R *.dfm}
Function IsAdmin: Boolean;
Const
  SECURITY_NT_AUTHORITY: TSIDIdentifierAuthority = (value: (0, 0, 0, 0, 0, 5));
  SECURITY_BUILTIN_DOMAIN_RID = $00000020;
  DOMAIN_ALIAS_RID_ADMINS = $00000220;
Var
  hAccessToken: THandle;
  ptgGroups: PTokenGroups;
  dwInfoBufferSize: DWORD;
  psidAdministrators: PSID;
  x: Integer;
  bSuccess: BOOL;
Begin
  Result := False;
  bSuccess := OpenThreadToken(GetCurrentThread, TOKEN_QUERY, True,
    hAccessToken);
  If Not bSuccess Then
  Begin
    If GetLastError = ERROR_NO_TOKEN Then
      bSuccess := OpenProcessToken(GetCurrentProcess, TOKEN_QUERY,
        hAccessToken);
  End;
  If bSuccess Then
  Begin
    GetMem(ptgGroups, 1024);
    bSuccess := GetTokenInformation(hAccessToken, TokenGroups,
      ptgGroups, 1024, dwInfoBufferSize);
    CloseHandle(hAccessToken);
    If bSuccess Then
    Begin
      AllocateAndInitializeSid(SECURITY_NT_AUTHORITY, 2,
        SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS,
        0, 0, 0, 0, 0, 0, psidAdministrators);
      {$R-}
      For x := 0 To ptgGroups.GroupCount - 1 Do
        If EqualSid(psidAdministrators, ptgGroups.Groups[x].Sid) Then
        Begin
          Result := True;
          Break;
        End;
      {$R+}
      FreeSid(psidAdministrators);
    End;
    FreeMem(ptgGroups);
  End;
End;

Procedure TForm1.FormCreate(Sender: TObject);
Begin
  If IsAdmin Then
    ShowMessage(IsAdmin);
End;
End.

补充：综合编程 , 安全编程 ,