After killing the process for TabletKeyboard(TabTip.exe) application doesn't bring back to its original size in wpf

Question

I have a wpf application which runs on the windows 8 tablet . And in order to bring the keyboard for typing when the focus is on any TextBox.

I am invok

Answer 1

Abin - you asked about closing the keyboard window rather than killing the process. That's what I'm doing in a WPF app and by closing the window, my main application's window will resize as expected. A quick console app to demonstrate hiding the keyboard is here (note that this assumes you're using the keyboard in docked mode rather than the floating minimal mode):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace TabTipTest
{
    class Program
    {
        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(String sClassName, String sAppName);

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

        /// 

        /// The command for a user choosing a command from the Window menu (see http://msdn.microsoft.com/en-gb/library/windows/desktop/ms646360(v=vs.85).aspx).
        /// 
        public const int WM_SYSCOMMAND = 0x0112;

        /// 

        /// Closes the window.
        /// 
        public const int SC_CLOSE = 0xF060;

        static void Main(string[] args)
        {
            HideKeyboard();
        }

        /// 

        /// Gets the window handler for the virtual keyboard.
        /// 
        /// The handle.
        public static IntPtr GetKeyboardWindowHandle()
        {
            return FindWindow("IPTip_Main_Window", null);
        }

        /// 

        /// Hides the keyboard by sending the window the close command.
        /// 
        public static void HideKeyboard()
        {
            IntPtr keyboardHandle = GetKeyboardWindowHandle();

            if (keyboardHandle != IntPtr.Zero)
            {
                SendMessage(keyboardHandle, WM_SYSCOMMAND, SC_CLOSE, 0);
            }
        }
    }
}