问在打开数字板视图的情况下启动TabTip

EN

    [DllImport("user32.dll")]
    public static extern IntPtr FindWindow(string sClassName, string sAppName);

    [DllImport("user32.dll")]
    public static extern IntPtr PostMessage(int hWnd, uint msg, int wParam, int lParam);

    private static void KillTabTip()
    {
        // Kill the previous process so the registry change will take effect.
        var processlist = Process.GetProcesses();

        foreach (var process in processlist.Where(process => process.ProcessName == "TabTip"))
        {
            process.Kill();
            break;
        }
    }

    public void ShowTouchKeyboard(bool isVisible, bool numericKeyboard)
    {
        if (isVisible)
        {
            const string keyName = "HKEY_CURRENT_USER\\Software\\Microsoft\\TabletTip\\1.7";

            var regValue = (int) Registry.GetValue(keyName, "KeyboardLayoutPreference", 0);
            var regShowNumericKeyboard = regValue == 1;

            // Note: Remove this if do not want to control docked state.
            var dockedRegValue = (int) Registry.GetValue(keyName, "EdgeTargetDockedState", 1);
            var restoreDockedState = dockedRegValue == 0;

            if (numericKeyboard && regShowNumericKeyboard == false)
            {
                // Set the registry so it will show the number pad via the thumb keyboard.
                Registry.SetValue(keyName, "KeyboardLayoutPreference", 1, RegistryValueKind.DWord);

                // Kill the previous process so the registry change will take effect.
                KillTabTip();
            }
            else if (numericKeyboard == false && regShowNumericKeyboard)
            {
                // Set the registry so it will NOT show the number pad via the thumb keyboard.
                Registry.SetValue(keyName, "KeyboardLayoutPreference", 0, RegistryValueKind.DWord);

                // Kill the previous process so the registry change will take effect.
                KillTabTip();
            }

            // Note: Remove this if do not want to control docked state.
            if (restoreDockedState)
            {
                // Set the registry so it will show as docked at the bottom rather than floating.
                Registry.SetValue(keyName, "EdgeTargetDockedState", 1, RegistryValueKind.DWord);

                // Kill the previous process so the registry change will take effect.
                KillTabTip();
            }

            Process.Start("c:\\Program Files\\Common Files\\Microsoft Shared\\ink\\TabTip.exe");
        }
        else
        {
            var win8Version = new Version(6, 2, 9200, 0);

            if (Environment.OSVersion.Version >= win8Version)
            {
                const uint wmSyscommand = 274;
                const uint scClose = 61536;
                var keyboardWnd = FindWindow("IPTip_Main_Window", null);
                PostMessage(keyboardWnd.ToInt32(), wmSyscommand, (int)scClose, 0);
            }
        }
    }

    #region NumericKeyboard
    public static readonly DependencyProperty NumericKeyboardProperty = DependencyProperty.Register("NumericKeyboard", typeof(bool), typeof(CustomTextBox), new FrameworkPropertyMetadata(false));

    /// <summary> Returns/set the "NumericKeyboard" state of the CustomTextBox. </summary>
    public bool NumericKeyboard
    {
        get { return (bool)GetValue(NumericKeyboardProperty); }
        set { SetValue(NumericKeyboardProperty, value); }
    }
    #endregion


    protected override void OnTouchDown(TouchEventArgs e)
    {
        base.OnTouchDown(e);
        Focus();

        if (IsReadOnly == false)
            ShowTouchKeyboard(true, NumericKeyboard);
    }