var commonFilesPath = Environment.GetFolderPath(Environment.SpecialFolder.CommonProgramFiles);//程序集目标平台为X86时，获取到的是x86的Program Files，但TabTip.exe始终在Program Files目录下if (commonFilesPath.Contains("Program Files (x86)")){commonFilesPath = commonFilesPath.Replace("Program Files (x86)", "Program Files");}

            var tabTipPath = Path.Combine(commonFilesPath, @"microsoft shared\ink\TabTip.exe");

                var processStartInfo = new ProcessStartInfo{FileName = tabTipPath,UseShellExecute = true,CreateNoWindow = true};Process.Start(processStartInfo);//第一次系统软键盘启动时候，需要缓冲一下Thread.Sleep(50);

            var minWin10Version = new Version(10, 0, 14393, 0);var isNeedCom = Environment.OSVersion.Version >= minWin10Version;

  //使用com组件的方式来打开TabTip.exevar uiHostNoLaunch = new UIHostNoLaunch();// ReSharper disable once SuspiciousTypeConversion.Globalvar tipInvocation = uiHostNoLaunch as ITipInvocation;tipInvocation?.Toggle(Win32.User32.GetDesktopWindow());Marshal.ReleaseComObject(uiHostNoLaunch);[ComImport, Guid("4ce576fa-83dc-4F88-951c-9d0782b4e376")]class UIHostNoLaunch{}[ComImport, Guid("37c994e7-432b-4834-a2f7-dce1f13b834b")][InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]interface ITipInvocation{void Toggle(IntPtr hwnd);}[DllImport("user32.dll", SetLastError = false)]static extern IntPtr GetDesktopWindow();

        private static IntPtr FindTipMainWindow(){return Win32.User32.FindWindow(KeyboardWindowClass, null);}private const string KeyboardWindowClass = "IPTip_Main_Window";private static bool GetIsOpenLegacy(){var touchHwnd = FindTipMainWindow();if (touchHwnd == IntPtr.Zero){return false;}// 这里需要 unchecked 因为返回的是 int 转换为 WindowStyles 需要忽略负号var style = (Win32.WindowStyles) Win32.User32.GetWindowLongPtr(touchHwnd,(int) Win32.GetWindowLongFields.GWL_STYLE);// 如果满足了下面的条件就可以判断显示键盘// 由于有的系统在键盘不显示时候只是多返回一个WS_DISABLED这个字段。所以加一个它的判断return style.HasFlag(Win32.WindowStyles.WS_CLIPSIBLINGS)&& style.HasFlag(Win32.WindowStyles.WS_VISIBLE)&& style.HasFlag(Win32.WindowStyles.WS_POPUP)&& !style.HasFlag(Win32.WindowStyles.WS_DISABLED);}

        private const string WindowParentClass = "ApplicationFrameWindow";private const string WindowClass = "Windows.UI.Core.CoreWindow";private const string WindowCaption = "Microsoft Text Input Application";private static bool? GetIsOpenKeyboardWindow(){// if there is a top-level window - the keyboard is closedvar wnd = Win32.User32.FindWindowEx(IntPtr.Zero, IntPtr.Zero, WindowClass, WindowCaption);if (wnd != IntPtr.Zero)return false;var parent = Win32.User32.FindWindowEx(IntPtr.Zero, IntPtr.Zero, WindowParentClass, null);if (parent == IntPtr.Zero)return null; // no more windows, keyboard state is unknown// if it's a child of a WindowParentClass1709 window - the keyboard is openwnd = Win32.User32.FindWindowEx(parent, IntPtr.Zero, WindowClass, WindowCaption);if (wnd != IntPtr.Zero)return true;return null;}// 这是 Win32.User32 的方法public const string LibraryName = "user32";[DllImport(LibraryName, CharSet = Properties.BuildCharSet)]public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass,string lpszWindow);[DllImport(LibraryName, CharSet = Properties.BuildCharSet)]public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);