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How to install WCF class library project as a windows service programmatically in C#

Trying to create the windows service programmatically. Found out the reference from stackoverflow to do it. However the parameter filename in InstallAndStart method expects a .exe
In my case, my WCF project which i want to host as windows service is a Service library project. Hence the output is in .dll
How can i use the below code to achieve installing WCF as Windows Service?
The purpose is, I have many WCF projects and don't want to create multiple Windows Service projects again for each WCF project.
Reference from How to install a windows service programmatically in C#?
public static class ServiceManager
{
private const int STANDARD_RIGHTS_REQUIRED = 0xF0000;
private const int SERVICE_WIN32_OWN_PROCESS = 0x00000010;
[StructLayout(LayoutKind.Sequential)]
private class SERVICE_STATUS
{
public int dwServiceType = 0;
public ServiceState dwCurrentState = 0;
public int dwControlsAccepted = 0;
public int dwWin32ExitCode = 0;
public int dwServiceSpecificExitCode = 0;
public int dwCheckPoint = 0;
public int dwWaitHint = 0;
}
#region OpenSCManager
[DllImport("advapi32.dll", EntryPoint = "OpenSCManagerW", ExactSpelling = true, CharSet = CharSet.Unicode, SetLastError = true)]
static extern IntPtr OpenSCManager(string machineName, string databaseName, ScmAccessRights dwDesiredAccess);
#endregion
#region OpenService
[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern IntPtr OpenService(IntPtr hSCManager, string lpServiceName, ServiceAccessRights dwDesiredAccess);
#endregion
#region CreateService
[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern IntPtr CreateService(IntPtr hSCManager, string lpServiceName, string lpDisplayName, ServiceAccessRights dwDesiredAccess, int dwServiceType, ServiceBootFlag dwStartType, ServiceError dwErrorControl, string lpBinaryPathName, string lpLoadOrderGroup, IntPtr lpdwTagId, string lpDependencies, string lp, string lpPassword);
#endregion
#region CloseServiceHandle
[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool CloseServiceHandle(IntPtr hSCObject);
#endregion
#region QueryServiceStatus
[DllImport("advapi32.dll")]
private static extern int QueryServiceStatus(IntPtr hService, SERVICE_STATUS lpServiceStatus);
#endregion
#region DeleteService
[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool DeleteService(IntPtr hService);
#endregion
#region ControlService
[DllImport("advapi32.dll")]
private static extern int ControlService(IntPtr hService, ServiceControl dwControl, SERVICE_STATUS lpServiceStatus);
#endregion
#region StartService
[DllImport("advapi32.dll", SetLastError = true)]
private static extern int StartService(IntPtr hService, int dwNumServiceArgs, int lpServiceArgVectors);
#endregion
public static void Uninstall(string serviceName)
{
IntPtr scm = OpenSCManager(ScmAccessRights.AllAccess);
try
{
IntPtr service = OpenService(scm, serviceName, ServiceAccessRights.AllAccess);
if (service == IntPtr.Zero)
throw new ApplicationException("Service not installed.");
try
{
StopService(service);
if (!DeleteService(service))
throw new ApplicationException("Could not delete service " + Marshal.GetLastWin32Error());
}
finally
{
CloseServiceHandle(service);
}
}
finally
{
CloseServiceHandle(scm);
}
}
public static bool ServiceIsInstalled(string serviceName)
{
IntPtr scm = OpenSCManager(ScmAccessRights.Connect);
try
{
IntPtr service = OpenService(scm, serviceName, ServiceAccessRights.QueryStatus);
if (service == IntPtr.Zero)
return false;
CloseServiceHandle(service);
return true;
}
finally
{
CloseServiceHandle(scm);
}
}
public static void InstallAndStart(string serviceName, string displayName, string fileName)
{
IntPtr scm = OpenSCManager(ScmAccessRights.AllAccess);
try
{
IntPtr service = OpenService(scm, serviceName, ServiceAccessRights.AllAccess);
if (service == IntPtr.Zero)
service = CreateService(scm, serviceName, displayName, ServiceAccessRights.AllAccess, SERVICE_WIN32_OWN_PROCESS, ServiceBootFlag.AutoStart, ServiceError.Normal, fileName, null, IntPtr.Zero, null, null, null);
if (service == IntPtr.Zero)
throw new ApplicationException("Failed to install service.");
try
{
StartService(service);
}
finally
{
CloseServiceHandle(service);
}
}
finally
{
CloseServiceHandle(scm);
}
}
public static void StartService(string serviceName)
{
IntPtr scm = OpenSCManager(ScmAccessRights.Connect);
try
{
IntPtr service = OpenService(scm, serviceName, ServiceAccessRights.QueryStatus | ServiceAccessRights.Start);
if (service == IntPtr.Zero)
throw new ApplicationException("Could not open service.");
try
{
StartService(service);
}
finally
{
CloseServiceHandle(service);
}
}
finally
{
CloseServiceHandle(scm);
}
}
public static void StopService(string serviceName)
{
IntPtr scm = OpenSCManager(ScmAccessRights.Connect);
try
{
IntPtr service = OpenService(scm, serviceName, ServiceAccessRights.QueryStatus | ServiceAccessRights.Stop);
if (service == IntPtr.Zero)
throw new ApplicationException("Could not open service.");
try
{
StopService(service);
}
finally
{
CloseServiceHandle(service);
}
}
finally
{
CloseServiceHandle(scm);
}
}
private static void StartService(IntPtr service)
{
SERVICE_STATUS status = new SERVICE_STATUS();
StartService(service, 0, 0);
var changedStatus = WaitForServiceStatus(service, ServiceState.StartPending, ServiceState.Running);
if (!changedStatus)
throw new ApplicationException("Unable to start service");
}
private static void StopService(IntPtr service)
{
SERVICE_STATUS status = new SERVICE_STATUS();
ControlService(service, ServiceControl.Stop, status);
var changedStatus = WaitForServiceStatus(service, ServiceState.StopPending, ServiceState.Stopped);
if (!changedStatus)
throw new ApplicationException("Unable to stop service");
}
public static ServiceState GetServiceStatus(string serviceName)
{
IntPtr scm = OpenSCManager(ScmAccessRights.Connect);
try
{
IntPtr service = OpenService(scm, serviceName, ServiceAccessRights.QueryStatus);
if (service == IntPtr.Zero)
return ServiceState.NotFound;
try
{
return GetServiceStatus(service);
}
finally
{
CloseServiceHandle(service);
}
}
finally
{
CloseServiceHandle(scm);
}
}
private static ServiceState GetServiceStatus(IntPtr service)
{
SERVICE_STATUS status = new SERVICE_STATUS();
if (QueryServiceStatus(service, status) == 0)
throw new ApplicationException("Failed to query service status.");
return status.dwCurrentState;
}
private static bool WaitForServiceStatus(IntPtr service, ServiceState waitStatus, ServiceState desiredStatus)
{
SERVICE_STATUS status = new SERVICE_STATUS();
QueryServiceStatus(service, status);
if (status.dwCurrentState == desiredStatus) return true;
int dwStartTickCount = Environment.TickCount;
int dwOldCheckPoint = status.dwCheckPoint;
while (status.dwCurrentState == waitStatus)
{
// Do not wait longer than the wait hint. A good interval is
// one tenth the wait hint, but no less than 1 second and no
// more than 10 seconds.
int dwWaitTime = status.dwWaitHint / 10;
if (dwWaitTime < 1000) dwWaitTime = 1000;
else if (dwWaitTime > 10000) dwWaitTime = 10000;
Thread.Sleep(dwWaitTime);
// Check the status again.
if (QueryServiceStatus(service, status) == 0) break;
if (status.dwCheckPoint > dwOldCheckPoint)
{
// The service is making progress.
dwStartTickCount = Environment.TickCount;
dwOldCheckPoint = status.dwCheckPoint;
}
else
{
if (Environment.TickCount - dwStartTickCount > status.dwWaitHint)
{
// No progress made within the wait hint
break;
}
}
}
return (status.dwCurrentState == desiredStatus);
}
private static IntPtr OpenSCManager(ScmAccessRights rights)
{
IntPtr scm = OpenSCManager(null, null, rights);
if (scm == IntPtr.Zero)
throw new ApplicationException("Could not connect to service control manager.");
return scm;
}
}
public enum ServiceState
{
Unknown = -1, // The state cannot be (has not been) retrieved.
NotFound = 0, // The service is not known on the host server.
Stopped = 1,
StartPending = 2,
StopPending = 3,
Running = 4,
ContinuePending = 5,
PausePending = 6,
Paused = 7
}
[Flags]
public enum ScmAccessRights
{
Connect = 0x0001,
CreateService = 0x0002,
EnumerateService = 0x0004,
Lock = 0x0008,
QueryLockStatus = 0x0010,
ModifyBootConfig = 0x0020,
StandardRightsRequired = 0xF0000,
AllAccess = (StandardRightsRequired | Connect | CreateService |
EnumerateService | Lock | QueryLockStatus | ModifyBootConfig)
}
[Flags]
public enum ServiceAccessRights
{
QueryConfig = 0x1,
ChangeConfig = 0x2,
QueryStatus = 0x4,
EnumerateDependants = 0x8,
Start = 0x10,
Stop = 0x20,
PauseContinue = 0x40,
Interrogate = 0x80,
UserDefinedControl = 0x100,
Delete = 0x00010000,
StandardRightsRequired = 0xF0000,
AllAccess = (StandardRightsRequired | QueryConfig | ChangeConfig |
QueryStatus | EnumerateDependants | Start | Stop | PauseContinue |
Interrogate | UserDefinedControl)
}
public enum ServiceBootFlag
{
Start = 0x00000000,
SystemStart = 0x00000001,
AutoStart = 0x00000002,
DemandStart = 0x00000003,
Disabled = 0x00000004
}
public enum ServiceControl
{
Stop = 0x00000001,
Pause = 0x00000002,
Continue = 0x00000003,
Interrogate = 0x00000004,
Shutdown = 0x00000005,
ParamChange = 0x00000006,
NetBindAdd = 0x00000007,
NetBindRemove = 0x00000008,
NetBindEnable = 0x00000009,
NetBindDisable = 0x0000000A
}
public enum ServiceError
{
Ignore = 0x00000000,
Normal = 0x00000001,
Severe = 0x00000002,
Critical = 0x00000003
}

How deleted, replaced file at share folder

Hello I have a problem with deleting and replacing files at share folder
I have full access.
"access to the path was denied"
The copy function works well in both directions.
(but I have to delete files manually).
SERVER - >>> PC
SERVER <<< - PC
The program connects to the file server under another user and manipulate with files (copy files worked fine, delete files doesn't work replace doesn't work).
private void replaceFile(string source, string sourceName ,string destination)
{
try
{
using (new Impersonator(username(), domain(), password()))
{
//File.delete(destination);
//File.Copy(source, destination, true);
File.Replace(source, destination, null);
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
private void copyFile(string source, string destination)
{
try
{
using (new Impersonator(username(), domain(), password()))
{
File.Copy(source, destination, true);
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Windows.Forms;
namespace IFS_FileManager
{
public enum LogonType
{
LOGON32_LOGON_INTERACTIVE = 2,
LOGON32_LOGON_NETWORK = 3,
LOGON32_LOGON_BATCH = 4,
LOGON32_LOGON_SERVICE = 5,
LOGON32_LOGON_UNLOCK = 7,
LOGON32_LOGON_NETWORK_CLEARTEXT = 8, // Win2K or higher
LOGON32_LOGON_NEW_CREDENTIALS = 9 // Win2K or higher
};
public enum LogonProvider
{
LOGON32_PROVIDER_DEFAULT = 0,
LOGON32_PROVIDER_WINNT35 = 1,
LOGON32_PROVIDER_WINNT40 = 2,
LOGON32_PROVIDER_WINNT50 = 3
};
public enum ImpersonationLevel
{
SecurityAnonymous = 0,
SecurityIdentification = 1,
SecurityImpersonation = 2,
SecurityDelegation = 3
}
class Win32NativeMethods
{
[DllImport("advapi32.dll", SetLastError = true)]
public static extern int LogonUser(string lpszUserName,
string lpszDomain,
string lpszPassword,
int dwLogonType,
int dwLogonProvider,
ref IntPtr phToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int DuplicateToken(IntPtr hToken,
int impersonationLevel,
ref IntPtr hNewToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool RevertToSelf();
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern bool CloseHandle(IntPtr handle);
}
public class Impersonator : IDisposable
{
private WindowsImpersonationContext _wic;
public Impersonator(string userName, string domainName, string password, LogonType logonType, LogonProvider logonProvider)
{
Impersonate(userName, domainName, password, logonType, logonProvider);
}
public Impersonator(string userName, string domainName, string password)
{
Impersonate(userName, domainName, password, LogonType.LOGON32_LOGON_INTERACTIVE, LogonProvider.LOGON32_PROVIDER_DEFAULT);
}
public Impersonator() { }
public void Dispose()
{
UndoImpersonation();
}
public void Impersonate(string userName, string domainName, string password)
{
Impersonate(userName, domainName, password, LogonType.LOGON32_LOGON_INTERACTIVE, LogonProvider.LOGON32_PROVIDER_DEFAULT);
}
public void Impersonate(string userName, string domainName, string password, LogonType logonType, LogonProvider logonProvider)
{
UndoImpersonation();
IntPtr logonToken = IntPtr.Zero;
IntPtr logonTokenDuplicate = IntPtr.Zero;
try
{
// revert to the application pool identity, saving the identity of the current requestor
_wic = WindowsIdentity.Impersonate(IntPtr.Zero);
// do logon & impersonate
if (Win32NativeMethods.LogonUser(userName,domainName,password,(int)logonType,(int)logonProvider,ref logonToken) != 0)
{
if (Win32NativeMethods.DuplicateToken(logonToken, (int)ImpersonationLevel.SecurityImpersonation, ref logonTokenDuplicate) != 0)
{
var wi = new WindowsIdentity(logonTokenDuplicate);
wi.Impersonate();
// discard the returned identity context (which is the context of the application pool)
}
else
MessageBox.Show("\n " + Marshal.GetLastWin32Error(), "Error Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
MessageBox.Show("\n " + Marshal.GetLastWin32Error(), "Error Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
if (logonToken != IntPtr.Zero)
Win32NativeMethods.CloseHandle(logonToken);
if (logonTokenDuplicate != IntPtr.Zero)
Win32NativeMethods.CloseHandle(logonTokenDuplicate);
}
}
/// <summary>
/// Stops impersonation.
/// </summary>
private void UndoImpersonation()
{
// restore saved requestor identity
if (_wic != null)
_wic.Undo();
_wic = null;
}
}
}

passing code to a function as parameter within "using statement"

This code works fine with me:
[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
[DllImport("kernel32.dll")]
public static extern bool CloseHandle(IntPtr token);
enum LogonType
{
Interactive = 2,
Network = 3,
Batch = 4,
Service = 5,
Unlock = 7,
NetworkClearText = 8,
NewCredentials = 9
}
enum LogonProvider
{
Default = 0,
WinNT35 = 1,
WinNT40 = 2,
WinNT50 = 3
}
private void Button1_Click()
{
IntPtr token = IntPtr.Zero;
LogonUser("Administrator",
"192.168.1.244",
"PassWord",
(int)LogonType.NewCredentials,
(int)LogonProvider.WinNT50,
ref token);
using (WindowsImpersonationContext context = WindowsIdentity.Impersonate(token))
{
CloseHandle(token);
/*
Code_of_Do_Something
*/
}
}
BUT...This means I have to repeat the last code which inside "Button1_Click()" each time I need to do impersonation ( Doing something on the remote machine = server).
So my question: Is it possible to do something like this illustration?:

You can use delegates for this purpose. The easiest way is to use Action or Func. If you don't need a return value, use an Action:
private void RunImpersonated(Action act)
{
IntPtr token = IntPtr.Zero;
LogonUser("Administrator",
"192.168.1.244",
"PassWord",
(int)LogonType.NewCredentials,
(int)LogonProvider.WinNT50,
ref token);
try
{
using (WindowsImpersonationContext context = WindowsIdentity.Impersonate(token))
{
// Call action
act();
}
}
finally
{
CloseHandle(token);
}
}
Note that there are lots of variations with generic type parameters that allow you to also provide parameters to Action or Func delegates in a strongly typed way. If you need an into parameter for instance, use Action<int> instead of just Action.
Also note that I created a finally block that closes the handle whether an exception occurs or not.
In order to call the function, you can use a lambda expression:
private void button1_Click(object sender, EventArgs e)
{
RunImpersonated(() => {
DirectoryInfo dir = new DirectoryInfo( #"\\192.168.1.244\repository");
foreach (DirectoryInfo di in dir.GetDirectories())
{
lable_folders_count.Text = Convert.ToString(dir.GetFileSystemInfos().Length);
}
});
}

Yes, it is possible to pass code as a parameter. But let's solve your problem without using lambdas:
private void Button1_Click()
{
using(GetImpersonationContext())
{
/* code here */
}
}
private WindowsImpersonationContext GetImpersonationContext()
{
IntPtr token = IntPtr.Zero;
LogonUser("Administrator",
"192.168.1.244",
"PassWord",
(int)LogonType.NewCredentials,
(int)LogonProvider.WinNT50,
ref token);
WindowsImpersonationContext context = WindowsIdentity.Impersonate(token);
CloseHandle(token);
return context;
}

C# File system on remote server in ActiveDirectory and Impersonation

This theme are not new. But I need help of some professional.
I am making a windows form application which will run on local system(not domain's computer). The application would creating folder and some files on Active Directory domain's shared folder.
I have read about Impersonation and have tried to make some thing like this: Impersonation by using LogonUser
Then I wrote the next code:
using System.Security.Principal;
using System.Runtime.InteropServices;
public partial class Form1 : Form
{
private enum LogonSessionType : uint
{
Interactive = 2,
Network,
Batch,
Service,
NetworkCleartext = 8,
NewCredentials
}
private enum LogonProvider : uint
{
Default = 0,
WinNT35,
WinNT40,
WinNT50
}
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool CloseHandle(IntPtr handle);
[DllImport("advapi32.dll", SetLastError = true)]
static extern bool LogonUser(
string principal,
string authority,
string password,
LogonSessionType logonType,
LogonProvider logonProvider,
out IntPtr token);
public Form1()
{
InitializeComponent();
}
protected void btnConnect_Click(object sender, EventArgs e)
{
IntPtr token = IntPtr.Zero;
WindowsImpersonationContext impersonateUser = null;
try
{
bool result = LogonUser("Administrator#mydomain.ru", "192.168.1.1", "SomeP#ssWorD",
LogonSessionType.Network, LogonProvider.Default, out token);
if(result)
{
WindowsIdentity id = new WindowsIdentity(token);
impersonateUser = id.Impersonate();
string showtext = string.Format("Identity: {0}", WindowsIdentity.GetCurrent().Name);
MessageBox.Show(showtext);
}
else
{
string showtext = string.Format("Identity: {0}", "Fail");
MessageBox.Show(showtext);
}
}
catch
{
}
finally
{
if(impersonateUser!=null)
impersonateUser.Undo();
if (token != IntPtr.Zero)
CloseHandle(token);
}
}
}
But bool result is always = false. What am I doing wrong?

i was wrong about understanding of LogonUser function. I was thinking that this function get remote token, but it generate.
Here is the right using:
bool result = LogonUser("Administrator", "mydomain.ru", "SomePa$$worD", LogonSessionType.NewCredentials, LogonProvider.Default, out safeTokenHandle);

Unable to find an entry point named 'LogonUser' in DLL 'advapi32.dll' Impersonation exception

I'm getting the following exception when going through some legacy impersonation logic:
Unable to find an entry point named 'LogonUser' in DLL 'advapi32.dll'
I understand that the error means that my app can't find the LogonUser method in the advapi32.dll.
The code looks something like this:
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true)]
private static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
if(LogonUser(_username, _domainname, _password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref _tokenHandle))
{
//do stuff...
}
Has anyone had a similar error - any suggestions on how to fix it or why it is happening? Is there a better way to do this besides using the advapi32.dll (its a .net 3.5 solution but there are lots of legacy classes)?

Maybe it has something to do with the "ExactSpelling = true"
This seems to work:
public enum LogonType : int
{
Interactive = 2,
Network = 3,
Batch = 4,
Service = 5,
Unlock = 7,
NetworkCleartText = 8,
NewCredentials = 9,
}
public enum LogonProvider : int
{
Default = 0,
}
public class Impersonation : IDisposable
{
#region Dll Imports
[DllImport("kernel32.dll")]
private static extern Boolean CloseHandle(IntPtr hObject);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool LogonUser(string username, string domain,
string password, LogonType logonType,
LogonProvider logonProvider,
out IntPtr userToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool DuplicateToken(IntPtr token, int impersonationLevel,
ref IntPtr duplication);
[DllImport("advapi32.dll", SetLastError = true)]
static extern bool ImpersonateLoggedOnUser(IntPtr userToken);
#endregion
#region Private members
private bool _disposed;
private WindowsImpersonationContext _impersonationContext;
#endregion
#region Constructors
public Impersonation(String username, String domain, String password)
{
IntPtr userToken = IntPtr.Zero;
IntPtr userTokenDuplication = IntPtr.Zero;
// Logon with user and get token.
bool loggedOn = LogonUser(username, domain, password,
LogonType.Interactive, LogonProvider.Default,
out userToken);
if (loggedOn)
{
try
{
// Create a duplication of the usertoken, this is a solution
// for the known bug that is published under KB article Q319615.
if (DuplicateToken(userToken, 2, ref userTokenDuplication))
{
// Create windows identity from the token and impersonate the user.
WindowsIdentity identity = new WindowsIdentity(userTokenDuplication);
_impersonationContext = identity.Impersonate();
}
else
{
// Token duplication failed!
// Use the default ctor overload
// that will use Mashal.GetLastWin32Error();
// to create the exceptions details.
throw new Exception("Could not copy token");
}
}
finally
{
// Close usertoken handle duplication when created.
if (!userTokenDuplication.Equals(IntPtr.Zero))
{
// Closes the handle of the user.
CloseHandle(userTokenDuplication);
userTokenDuplication = IntPtr.Zero;
}
// Close usertoken handle when created.
if (!userToken.Equals(IntPtr.Zero))
{
// Closes the handle of the user.
CloseHandle(userToken);
userToken = IntPtr.Zero;
}
}
}
else
{
throw new Exception("Login failed");
}
}
~Impersonation()
{
Dispose(false);
}
#endregion
#region Public methods
public void Revert()
{
if (_impersonationContext != null)
{
// Revert to previous user.
_impersonationContext.Undo();
_impersonationContext = null;
}
}
#endregion
#region IDisposable implementation.
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (!_disposed)
{
Revert();
_disposed = true;
}
}
#endregion
}

Have you tried using the version of LogonUser's signature provided on pinvoke.net?