How to open the tablet-mode on-screen-keyboard in C#?

Question

I want to start the new On-Screen-Keyboard (OSK) using code. You can find this one in the taskbar:

(if not there you find it by right clicking the taskbar).

I have already tried the regular:

System.Diagnostics.Process.Start("osk.exe");

But I want to start the other one (not in window mode). Here you see which OSK I want and which one not:

How can I start that version? And how can I start it in a certain setting (if possible)?

Answer 1

通过在命令行中启动进程

我相信您想在 Windows 10 中启动以下过程，如下所示：

"C:\Program Files\Common Files\microsoft shared\ink\tabtip.exe"

正如@bernard-vander-beken所建议的，最好使用

Environment.GetFolderPath(Environment.SpecialFolder.CommonProgramFiles)

生成"C:\Program Files\Common Files\"适合不同安装位置的路径部分。

通过 API

前面的命令行似乎以不一致的方式工作，特别是如果进程tabtip.exe已经在运行，它就不会工作两次。

我在这个线程上找到了 @torvin 的这个片段，在开始使用命令行解决方案后，您可以使用它以编程方式显示屏幕键盘，否则它会失败并出现异常。tabtip.exeCOM

class Program
{
    static void Main(string[] args)
    {
        var uiHostNoLaunch = new UIHostNoLaunch();
        var tipInvocation = (ITipInvocation)uiHostNoLaunch;
        tipInvocation.Toggle(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();
}