有一个小问题。
我们使用 Netgear 提供的互联网 VPN，让教职员工可以通过远程桌面连接从家里访问学校网络。
他们使用浏览器登录 VPN，然后点击其中一个远程服务器，就可以进入远程桌面连接。
但是人们经常遇到一个大问题，就是无法正确退出。似乎他们总是忘记如何退出。所有用户所做的就是在 RDC 客户端上点击关闭按钮，这并不会将他们注销。
我们正在构建一个程序来解决这个问题。想法是“挂钩”远程桌面 API，然后检查会话是否已断开连接，如果是，则注销用户。
该程序将作为服务或物理最小化的 EXE 在后台运行。
我们将使用 C# 进行构建。那么，有没有人知道可以使用 .NET 4 调用的 RDC 事件？这些事件将允许我们知道用户何时关闭会话。
如果您需要更多信息，请告诉我。
谢谢
SystemEvents.SessionSwitch += new SessionSwitchEventHandle SystemEvents_SessionSwitch);
那么
static void SystemEvents_SessionSwitch(object sender, SessionSwitchEventArgs e)
{
if (e.Reason == SessionSwitchReason.RemoteDisconnect || e.Reason == SessionSwitchReason.ConsoleDisconnect)
{
// Log off the user...
}
else
{
// Physical Logon
}
}
SystemParameters.IsRemoteSession和SystemParameters.IsRemoteControlled都没有提供真实值。 - Harald Coppoolse这比上面的答案更好。
public Form1()
{
InitializeComponent();
if (!WTSRegisterSessionNotification(this.Handle, NOTIFY_FOR_THIS_SESSION))
{
Marshal.ThrowExceptionForHR(Marshal.GetLastWin32Error());
}
}
[DllImport("user32.dll")]
public static extern int ExitWindowsEx(int uFlags, int dwReason);
[DllImport("WtsApi32.dll")]
private static extern bool WTSRegisterSessionNotification(IntPtr hWnd, [MarshalAs(UnmanagedType.U4)]int dwFlags);
[DllImport("WtsApi32.dll")]
private static extern bool WTSUnRegisterSessionNotification(IntPtr hWnd);
// constants that can be passed for the dwFlags parameter
const int NOTIFY_FOR_THIS_SESSION = 0;
const int NOTIFY_FOR_ALL_SESSIONS = 1;
// message id to look for when processing the message (see sample code)
const int WM_WTSSESSION_CHANGE = 0x2b1;
// WParam values that can be received:
const int WTS_CONSOLE_CONNECT = 0x1; // A session was connected to the console terminal.
const int WTS_CONSOLE_DISCONNECT = 0x2; // A session was disconnected from the console terminal.
const int WTS_REMOTE_CONNECT = 0x3; // A session was connected to the remote terminal.
const int WTS_REMOTE_DISCONNECT = 0x4; // A session was disconnected from the remote terminal.
const int WTS_SESSION_LOGON = 0x5; // A user has logged on to the session.
const int WTS_SESSION_LOGOFF = 0x6; // A user has logged off the session.
const int WTS_SESSION_LOCK = 0x7; // A session has been locked.
const int WTS_SESSION_UNLOCK = 0x8; // A session has been unlocked.
const int WTS_SESSION_REMOTE_CONTROL = 0x9; // A session has changed its remote controlled status.
protected override void OnHandleDestroyed(EventArgs e)
{
// unregister the handle before it gets destroyed
WTSUnRegisterSessionNotification(this.Handle);
base.OnHandleDestroyed(e);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_WTSSESSION_CHANGE)
{
int value = m.WParam.ToInt32();
if (value == WTS_REMOTE_DISCONNECT)
{
ExitWindowsEx(4, 0); // Logout the user on disconnect
}
else if (value == WTS_REMOTE_CONNECT)
{
MessageBox.Show("Welcome to the VPN. There is no need to Logout anymore, as when you close this session it will automatically log you out");
}
}
base.WndProc(ref m);
}
WM_WTSSESSION_CHANGE消息：http://msdn.microsoft.com/zh-cn/library/aa383828%28VS.85%29.aspx - Treb