假设在Windows上有多个用户login。 说， user1login，然后switch user和switch userlogin，（不使user1注销）。 假设有一个应用程序在用户login时运行。 有两个用户user1和user2login， user2作为活动用户，并且有两个应用程序。
我的问题是：该应用程序如何知道其相应的用户是否活跃？ 也就是说， user2域中的应用程序确定其用户处于活动状态，而user1域中的应用程序确定其用户当前处于非活动状态。 谢谢！
您可以调用WTSGetActiveConsoleSessionId以获取物理控制台上当前处于活动状态的终端服务（又名“快速用户切换”（即“远程桌面”）会话标识。
您可以使用WTS_CURRENT_SESSION为会话标识调用WTSQuerySessionInformation ，为WTSSessionId使用WTSInfoClass来获取当前进程的终端服务会话标识。
如果活动会话标识和当前进程会话标识相同，则当前进程对应的用户在物理控制台上具有活动会话。
如果您想知道当前进程正在运行的会话是否处于活动状态（但不一定在物理控制台上），则可以使用WTSConnectState选项来WTSQuerySessionInformation 。
从Windows服务运行时，WTSGetActiveConsoleSessionId（）实际上可能会返回会话0。 如果您需要从Windows服务中执行此操作，则需要枚举所有会话并查找连接的会话，然后从中获取用户。
下面的代码做的比这更多，包括模拟这个用户，并以windows用户的身份运行一个进程，但是如果你只是对用户名感兴趣，请查找第二个调用WTSQuerySessionInformation（）函数的实例。
//Function to run a process as active user from windows service void ImpersonateActiveUserAndRun(WCHAR* path, WCHAR* args) { DWORD session_id = -1; DWORD session_count = 0; WTS_SESSION_INFOA *pSession = NULL; if (WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &pSession, &session_count)) { //log success } else { //log error return; } for (int i = 0; i < session_count; i++) { session_id = pSession[i].SessionId; WTS_CONNECTSTATE_CLASS wts_connect_state = WTSDisconnected; WTS_CONNECTSTATE_CLASS* ptr_wts_connect_state = NULL; DWORD bytes_returned = 0; if (::WTSQuerySessionInformation( WTS_CURRENT_SERVER_HANDLE, session_id, WTSConnectState, reinterpret_cast<LPTSTR*>(&ptr_wts_connect_state), &bytes_returned)) { wts_connect_state = *ptr_wts_connect_state; ::WTSFreeMemory(ptr_wts_connect_state); if (wts_connect_state != WTSActive) continue; } else { //log error continue; } HANDLE hImpersonationToken; if (!WTSQueryUserToken(session_id, &hImpersonationToken)) { //log error continue; } //Get real token from impersonation token DWORD neededSize1 = 0; HANDLE *realToken = new HANDLE; if (GetTokenInformation(hImpersonationToken, (::TOKEN_INFORMATION_CLASS) TokenLinkedToken, realToken, sizeof(HANDLE), &neededSize1)) { CloseHandle(hImpersonationToken); hImpersonationToken = *realToken; } else { //log error continue; } HANDLE hUserToken; if (!DuplicateTokenEx(hImpersonationToken, //0, //MAXIMUM_ALLOWED, TOKEN_ASSIGN_PRIMARY | TOKEN_ALL_ACCESS | MAXIMUM_ALLOWED, NULL, SecurityImpersonation, TokenPrimary, &hUserToken)) { //log error continue; } // Get user name of this process //LPTSTR pUserName = NULL; WCHAR* pUserName; DWORD user_name_len = 0; if (WTSQuerySessionInformationW(WTS_CURRENT_SERVER_HANDLE, session_id, WTSUserName, &pUserName, &user_name_len)) { //log username contained in pUserName WCHAR string } //Free memory if (pUserName) WTSFreeMemory(pUserName); ImpersonateLoggedOnUser(hUserToken); STARTUPINFOW StartupInfo; GetStartupInfoW(&StartupInfo); StartupInfo.cb = sizeof(STARTUPINFOW); //StartupInfo.lpDesktop = "winsta0\\default"; PROCESS_INFORMATION processInfo; SECURITY_ATTRIBUTES Security1; Security1.nLength = sizeof SECURITY_ATTRIBUTES; SECURITY_ATTRIBUTES Security2; Security2.nLength = sizeof SECURITY_ATTRIBUTES; void* lpEnvironment = NULL; // Get all necessary environment variables of logged in user // to pass them to the new process BOOL resultEnv = CreateEnvironmentBlock(&lpEnvironment, hUserToken, FALSE); if (!resultEnv) { //log error continue; } WCHAR PP[1024]; //path and parameters ZeroMemory(PP, 1024 * sizeof WCHAR); wcscpy(PP, path); wcscat(PP, L" "); wcscat(PP, args); // Start the process on behalf of the current user BOOL result = CreateProcessAsUserW(hUserToken, NULL, PP, //&Security1, //&Security2, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS | CREATE_NEW_CONSOLE, //lpEnvironment, NULL, //"C:\\ProgramData\\some_dir", NULL, &StartupInfo, &processInfo); if (!result) { //log error } else { //log success } DestroyEnvironmentBlock(lpEnvironment); CloseHandle(hImpersonationToken); CloseHandle(hUserToken); CloseHandle(realToken); RevertToSelf(); } WTSFreeMemory(pSession); }