如何通过 c# 中的服务应用程序运行 GUI 应用程序

Question

我想通过 C# 中的服务应用程序运行 GUI 应用程序，所以我尝试使用 System.Diagnostics.Process.Start() 方法如下：

        if (KillTask("notepad") == false)
        {
            //ProcessStartInfo _ProcessStartInfo = new ProcessStartInfo(@"C:\WINDOWS\system32\notepad.exe");
            //_ProcessStartInfo.UseShellExecute = false;
            //_ProcessStartInfo.RedirectStandardError = true;
            //_ProcessStartInfo.RedirectStandardInput = true;
            //_ProcessStartInfo.RedirectStandardOutput = true;
            //_ProcessStartInfo.CreateNoWindow = true;

            //_ProcessStartInfo.ErrorDialog = false;
            //_ProcessStartInfo.WindowStyle = ProcessWindowStyle.Maximized;
            //System.Diagnostics.Process.Start(_ProcessStartInfo);


            System.Diagnostics.Process.Start("notepad.exe");



        }

问题是记事本运行但没有 UI，您可以在任务管理器中看到它，但没有显示记事本的 GUI 实例。

我也尝试过使用 ProcessStartInfo() class 正如您看到的注释代码一样，但问题仍然存在。

Answer 1

您是否尝试将 ProcessStartInfo 的用户名和密码属性设置为当前登录的用户？ 问题是系统用户没有可用的 gui。

Answer 2

您好，发生的情况是该进程在没有 session 的环境中运行，

必须有一个用户 session，启动进程并将 GUI 发送到这个启动的图形桌面 session。

这是经过验证的，因为当您启动流程时，您会获得一个 ID，并且可以在 TaskManager/Details/ 中检查它

按 PID 排序，您将看到该服务已启动但在 SYSTEM 中。

有必要创建一个 class 来获取登录用户并将 GUI 发送到该桌面

class ProcessExtensions.cs

public static class ProcessExtensions
{
    #region Win32 Constants

    private const int CREATE_UNICODE_ENVIRONMENT = 0x00000400;
    private const int CREATE_NO_WINDOW = 0x08000000;

    private const int CREATE_NEW_CONSOLE = 0x00000010;

    private const uint INVALID_SESSION_ID = 0xFFFFFFFF;
    private static readonly IntPtr WTS_CURRENT_SERVER_HANDLE = IntPtr.Zero;

    #endregion

    #region DllImports

    [DllImport("advapi32.dll", EntryPoint = "CreateProcessAsUser", SetLastError = true, CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
    private static extern bool CreateProcessAsUser(
        IntPtr hToken,
        String lpApplicationName,
        String lpCommandLine,
        IntPtr lpProcessAttributes,
        IntPtr lpThreadAttributes,
        bool bInheritHandle,
        uint dwCreationFlags,
        IntPtr lpEnvironment,
        String lpCurrentDirectory,
        ref STARTUPINFO lpStartupInfo,
        out PROCESS_INFORMATION lpProcessInformation);

    [DllImport("advapi32.dll", EntryPoint = "DuplicateTokenEx")]
    private static extern bool DuplicateTokenEx(
        IntPtr ExistingTokenHandle,
        uint dwDesiredAccess,
        IntPtr lpThreadAttributes,
        int TokenType,
        int ImpersonationLevel,
        ref IntPtr DuplicateTokenHandle);

    [DllImport("userenv.dll", SetLastError = true)]
    private static extern bool CreateEnvironmentBlock(ref IntPtr lpEnvironment, IntPtr hToken, bool bInherit);

    [DllImport("userenv.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    private static extern bool DestroyEnvironmentBlock(IntPtr lpEnvironment);

    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern bool CloseHandle(IntPtr hSnapshot);

    [DllImport("kernel32.dll")]
    private static extern uint WTSGetActiveConsoleSessionId();

    [DllImport("Wtsapi32.dll")]
    private static extern uint WTSQueryUserToken(uint SessionId, ref IntPtr phToken);

    [DllImport("wtsapi32.dll", SetLastError = true)]
    private static extern int WTSEnumerateSessions(
        IntPtr hServer,
        int Reserved,
        int Version,
        ref IntPtr ppSessionInfo,
        ref int pCount);

    #endregion

    #region Win32 Structs

    private enum SW
    {
        SW_HIDE = 0,
        SW_SHOWNORMAL = 1,
        SW_NORMAL = 1,
        SW_SHOWMINIMIZED = 2,
        SW_SHOWMAXIMIZED = 3,
        SW_MAXIMIZE = 3,
        SW_SHOWNOACTIVATE = 4,
        SW_SHOW = 5,
        SW_MINIMIZE = 6,
        SW_SHOWMINNOACTIVE = 7,
        SW_SHOWNA = 8,
        SW_RESTORE = 9,
        SW_SHOWDEFAULT = 10,
        SW_MAX = 10
    }

    private enum WTS_CONNECTSTATE_CLASS
    {
        WTSActive,
        WTSConnected,
        WTSConnectQuery,
        WTSShadow,
        WTSDisconnected,
        WTSIdle,
        WTSListen,
        WTSReset,
        WTSDown,
        WTSInit
    }

    [StructLayout(LayoutKind.Sequential)]
    private struct PROCESS_INFORMATION
    {
        public IntPtr hProcess;
        public IntPtr hThread;
        public uint dwProcessId;
        public uint dwThreadId;
    }

    private enum SECURITY_IMPERSONATION_LEVEL
    {
        SecurityAnonymous = 0,
        SecurityIdentification = 1,
        SecurityImpersonation = 2,
        SecurityDelegation = 3,
    }

    [StructLayout(LayoutKind.Sequential)]
    private struct STARTUPINFO
    {
        public int cb;
        public String lpReserved;
        public String lpDesktop;
        public String lpTitle;
        public uint dwX;
        public uint dwY;
        public uint dwXSize;
        public uint dwYSize;
        public uint dwXCountChars;
        public uint dwYCountChars;
        public uint dwFillAttribute;
        public uint dwFlags;
        public short wShowWindow;
        public short cbReserved2;
        public IntPtr lpReserved2;
        public IntPtr hStdInput;
        public IntPtr hStdOutput;
        public IntPtr hStdError;
    }

    private enum TOKEN_TYPE
    {
        TokenPrimary = 1,
        TokenImpersonation = 2
    }

    [StructLayout(LayoutKind.Sequential)]
    private struct WTS_SESSION_INFO
    {
        public readonly UInt32 SessionID;

        [MarshalAs(UnmanagedType.LPStr)]
        public readonly String pWinStationName;

        public readonly WTS_CONNECTSTATE_CLASS State;
    }

    #endregion

    // Gets the user token from the currently active session
    private static bool GetSessionUserToken(ref IntPtr phUserToken)
    {
        var bResult = false;
        var hImpersonationToken = IntPtr.Zero;
        var activeSessionId = INVALID_SESSION_ID;
        var pSessionInfo = IntPtr.Zero;
        var sessionCount = 0;

        // Get a handle to the user access token for the current active session.
        if (WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, ref pSessionInfo, ref sessionCount) != 0)
        {
            var arrayElementSize = Marshal.SizeOf(typeof(WTS_SESSION_INFO));
            var current = pSessionInfo;

            for (var i = 0; i < sessionCount; i++)
            {
                var si = (WTS_SESSION_INFO)Marshal.PtrToStructure((IntPtr)current, typeof(WTS_SESSION_INFO));
                current += arrayElementSize;

                if (si.State == WTS_CONNECTSTATE_CLASS.WTSActive)
                {
                    activeSessionId = si.SessionID;
                }
            }
        }

        // If enumerating did not work, fall back to the old method
        if (activeSessionId == INVALID_SESSION_ID)
        {
            activeSessionId = WTSGetActiveConsoleSessionId();
        }

        if (WTSQueryUserToken(activeSessionId, ref hImpersonationToken) != 0)
        {
            // Convert the impersonation token to a primary token
            bResult = DuplicateTokenEx(hImpersonationToken, 0, IntPtr.Zero,
                (int)SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation, (int)TOKEN_TYPE.TokenPrimary,
                ref phUserToken);

            CloseHandle(hImpersonationToken);
        }

        return bResult;
    }

    public static bool StartProcessAsCurrentUser(string appPath, string cmdLine = null, string workDir = null, bool visible = true)
    {
        var hUserToken = IntPtr.Zero;
        var startInfo = new STARTUPINFO();
        var procInfo = new PROCESS_INFORMATION();
        var pEnv = IntPtr.Zero;
        int iResultOfCreateProcessAsUser;

        startInfo.cb = Marshal.SizeOf(typeof(STARTUPINFO));

        try
        {
            if (!GetSessionUserToken(ref hUserToken))
            {
                throw new Exception("StartProcessAsCurrentUser: GetSessionUserToken failed.");
            }

            uint dwCreationFlags = CREATE_UNICODE_ENVIRONMENT | (uint)(visible ? CREATE_NEW_CONSOLE : CREATE_NO_WINDOW);
            startInfo.wShowWindow = (short)(visible ? SW.SW_SHOW : SW.SW_HIDE);
            startInfo.lpDesktop = "winsta0\\default";

            if (!CreateEnvironmentBlock(ref pEnv, hUserToken, false))
            {
                throw new Exception("StartProcessAsCurrentUser: CreateEnvironmentBlock failed.");
            }

            if (!CreateProcessAsUser(hUserToken,
                appPath, // Application Name
                cmdLine, // Command Line
                IntPtr.Zero,
                IntPtr.Zero,
                false,
                dwCreationFlags,
                pEnv,
                workDir, // Working directory
                ref startInfo,
                out procInfo))
            {
                iResultOfCreateProcessAsUser = Marshal.GetLastWin32Error();
                throw new Exception("StartProcessAsCurrentUser: CreateProcessAsUser failed.  Error Code -" + iResultOfCreateProcessAsUser);
            }

            iResultOfCreateProcessAsUser = Marshal.GetLastWin32Error();
        }
        finally
        {
            CloseHandle(hUserToken);
            if (pEnv != IntPtr.Zero)
            {
                DestroyEnvironmentBlock(pEnv);
            }
            CloseHandle(procInfo.hThread);
            CloseHandle(procInfo.hProcess);
        }

        return true;
    }

}

然后你只需按如下方式调用你的过程

 public static void run()
    {
        ProcessExtensions.StartProcessAsCurrentUser(@"calc.exe");
    }

接下来重新编译你的服务 // 安装 // 开始 //

更多信息：

如何从 windows 服务启动一个进程到当前登录用户的 session

学分：@murrayju

https://github.com/murrayju/CreateProcessAsUser