vista和win7在windows服务中交互桌面权限问题解决方法：穿透Session 0 隔离

using System.ServiceProcess;using System.Windows.Forms;namespace AlertService{ public partial class Service1 : ServiceBase {  public Service1()  {   InitializeComponent();  }  protected override void OnStart(string[] args)  {   MessageBox.Show("A message from AlertService.");  }  protected override void OnStop()  {  } }}

public static void ShowMessageBox(string message, string title){ int resp = 0; WTSSendMessage(  WTS_CURRENT_SERVER_HANDLE,   WTSGetActiveConsoleSessionId(),  title, title.Length,   message, message.Length,   0, 0, out resp, false);}[DllImport("kernel32.dll", SetLastError = true)]public static extern int WTSGetActiveConsoleSessionId();[DllImport("wtsapi32.dll", SetLastError = true)]public static extern bool WTSSendMessage( IntPtr hServer, int SessionId, String pTitle, int TitleLength, String pMessage, int MessageLength, int Style, int Timeout, out int pResponse, bool bWait);

protected override void OnStart(string[] args){ Interop.ShowMessageBox("This a message from AlertService.",       "AlertService Message");}

public static void CreateProcess(string app, string path){ bool result; IntPtr hToken = WindowsIdentity.GetCurrent().Token; IntPtr hDupedToken = IntPtr.Zero; PROCESS_INFORMATION pi = new PROCESS_INFORMATION(); SECURITY_ATTRIBUTES sa = new SECURITY_ATTRIBUTES(); sa.Length = Marshal.SizeOf(sa); STARTUPINFO si = new STARTUPINFO(); si.cb = Marshal.SizeOf(si); int dwSessionID = WTSGetActiveConsoleSessionId(); result = WTSQueryUserToken(dwSessionID, out hToken);  if (!result) {  ShowMessageBox("WTSQueryUserToken failed", "AlertService Message"); } result = DuplicateTokenEx(   hToken,   GENERIC_ALL_ACCESS,   ref sa,   (int)SECURITY_IMPERSONATION_LEVEL.SecurityIdentification,   (int)TOKEN_TYPE.TokenPrimary,   ref hDupedToken  ); if (!result) {  ShowMessageBox("DuplicateTokenEx failed" ,"AlertService Message"); } IntPtr lpEnvironment = IntPtr.Zero; result = CreateEnvironmentBlock(out lpEnvironment, hDupedToken, false); if (!result) {  ShowMessageBox("CreateEnvironmentBlock failed", "AlertService Message"); } result = CreateProcessAsUser(       hDupedToken,       app,       String.Empty,       ref sa, ref sa,       false, 0, IntPtr.Zero,       path, ref si, ref pi); if (!result) {  int error = Marshal.GetLastWin32Error();  string message = String.Format("CreateProcessAsUser Error: {0}", error);  ShowMessageBox(message, "AlertService Message"); } if (pi.hProcess != IntPtr.Zero)  CloseHandle(pi.hProcess); if (pi.hThread != IntPtr.Zero)  CloseHandle(pi.hThread); if (hDupedToken != IntPtr.Zero)  CloseHandle(hDupedToken);}[StructLayout(LayoutKind.Sequential)]public struct STARTUPINFO{ public Int32 cb; public string lpReserved; public string lpDesktop; public string lpTitle; public Int32 dwX; public Int32 dwY; public Int32 dwXSize; public Int32 dwXCountChars; public Int32 dwYCountChars; public Int32 dwFillAttribute; public Int32 dwFlags; public Int16 wShowWindow; public Int16 cbReserved2; public IntPtr lpReserved2; public IntPtr hStdInput; public IntPtr hStdOutput; public IntPtr hStdError;}[StructLayout(LayoutKind.Sequential)]public struct PROCESS_INFORMATION{ public IntPtr hProcess; public IntPtr hThread; public Int32 dwProcessID; public Int32 dwThreadID;}[StructLayout(LayoutKind.Sequential)]public struct SECURITY_ATTRIBUTES{ public Int32 Length; public IntPtr lpSecurityDescriptor; public bool bInheritHandle;}public enum SECURITY_IMPERSONATION_LEVEL{ SecurityAnonymous, SecurityIdentification, SecurityImpersonation, SecurityDelegation}public enum TOKEN_TYPE{ TokenPrimary = 1, TokenImpersonation}public const int GENERIC_ALL_ACCESS = 0x10000000;[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern bool CloseHandle(IntPtr handle);[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]public static extern bool CreateProcessAsUser( IntPtr hToken, string lpApplicationName, string lpCommandLine, ref SECURITY_ATTRIBUTES lpProcessAttributes, ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandle, Int32 dwCreationFlags, IntPtr lpEnvrionment, string lpCurrentDirectory, ref STARTUPINFO lpStartupInfo, ref PROCESS_INFORMATION lpProcessInformation);[DllImport("advapi32.dll", SetLastError = true)]public static extern bool DuplicateTokenEx( IntPtr hExistingToken, Int32 dwDesiredAccess, ref SECURITY_ATTRIBUTES lpThreadAttributes, Int32 ImpersonationLevel, Int32 dwTokenType, ref IntPtr phNewToken);[DllImport("wtsapi32.dll", SetLastError=true)]public static extern bool WTSQueryUserToken( Int32 sessionId,  out IntPtr Token);[DllImport("userenv.dll", SetLastError = true)]static extern bool CreateEnvironmentBlock( out IntPtr lpEnvironment,  IntPtr hToken,  bool bInherit);