WM_WTSSESSION_CHANGE Message

这个消息是通知应用程序，session 的改变。在WndProc中可以处理该消息，

// Session notification event //----------------------------------------------- case WM_WTSSESSION_CHANGE: switch (wParam) { case WTS_CONSOLE_CONNECT: OutputDebugString(L"WTS_CONSOLE_CONNECT"); break; case WTS_CONSOLE_DISCONNECT: OutputDebugString(L"WTS_CONSOLE_DISCONNECT"); break; case WTS_REMOTE_CONNECT: OutputDebugString(L"WTS_REMOTE_CONNECT"); break; case WTS_REMOTE_DISCONNECT: OutputDebugString(L"WTS_REMOTE_DISCONNECT"); break; case WTS_SESSION_LOGON: OutputDebugString(L"WTS_SESSION_LOGON"); break; case WTS_SESSION_LOGOFF: OutputDebugString(L"WTS_SESSION_LOGOFF"); break; case WTS_SESSION_LOCK: OutputDebugString(L"WTS_SESSION_LOCK"); break; case WTS_SESSION_UNLOCK: OutputDebugString(L"WTS_SESSION_UNLOCK"); break; case WTS_SESSION_REMOTE_CONTROL: OutputDebugString(L"WTS_SESSION_REMOTE_CONTROL"); break; }

他的wParam 参数包含了状态。详解见http://msdn.microsoft.com/en-us/library/aa383828(v=vs.85).aspx