WPF는 키보드 갈고리를 이용해 키보드를 포획하고 알려지지 않은 일을 하는데...전체 인스턴스

//        
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);


        //        

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        public static extern bool UnhookWindowsHookEx(int idHook);


        //         
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);

public class Win32Api
{
public const int WM_KEYDOWN = 0x100;

        public const int WM_KEYUP = 0x101;

        public const int WM_SYSKEYDOWN = 0x104;

        public const int WM_SYSKEYUP = 0x105;

        public const int WH_KEYBOARD_LL = 13;



        [StructLayout(LayoutKind.Sequential)] //             
        public class KeyboardHookStruct
        {

            public int vkCode; //     1 254        

            public int scanCode; //        

            public int flags;

            public int time;

            public int dwExtraInfo;

        }

public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);

        //        
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);


        //        

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern bool UnhookWindowsHookEx(int idHook);


        //         
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);

[DllImport("kernel32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern IntPtr GetModuleHandle(string lpModuleName);
}

public class KeyboardHook
    {
        int hHook;

        Win32Api.HookProc KeyboardHookDelegate;


/// <summary>
        ///       
        /// </summary>
        public void SetHook()
        {

            KeyboardHookDelegate = new Win32Api.HookProc(KeyboardHookProc);

            ProcessModule cModule = Process.GetCurrentProcess().MainModule;

            var mh = Win32Api.GetModuleHandle(cModule.ModuleName);

            hHook = Win32Api.SetWindowsHookEx(Win32Api.WH_KEYBOARD_LL, KeyboardHookDelegate, mh, 0);

        }

        /// <summary>
        ///       
        /// </summary>
        public void UnHook()
        {

            Win32Api.UnhookWindowsHookEx(hHook);

        }
        
        /// <summary>
        ///       
        /// </summary>
        /// <param name="nCode"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <returns></returns>
        private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
        {
            //         （nCode<0
            if (nCode >= 0)
            {

                Win32Api.KeyboardHookStruct KeyDataFromHook = (Win32Api.KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(Win32Api.KeyboardHookStruct));

                int keyData = KeyDataFromHook.vkCode;

                //WM_KEYDOWN WM_SYSKEYDOWN  ，    OnKeyDownEvent  
                if (OnKeyDownEvent != null && (wParam == Win32Api.WM_KEYDOWN || wParam == Win32Api.WM_SYSKEYDOWN))
                {
                        //           
                        // keyData       ,      

                }

                //WM_KEYUP WM_SYSKEYUP  ，   OnKeyUpEvent   

                if (OnKeyUpEvent != null && (wParam == Win32Api.WM_KEYUP || wParam == Win32Api.WM_SYSKEYUP))
                {
                          //           
                }

            }

            return Win32Api.CallNextHookEx(hHook, nCode, wParam, lParam);

        }
}

namespace System.Windows.Input
{
    //   : 
    //         Win32      WPFSystem.Windows.Input.Key              。
    public static class KeyInterop
    {
        //   : 
        //       Win32        WPFSystem.Windows.Input.Key。
        //
        //   : 
        //   virtualKey:
        //            。
        //
        //     : 
        //     WPF  。
        public static Key KeyFromVirtualKey(int virtualKey);
        //
        //   : 
        //       WPFSystem.Windows.Input.Key     Win32    。
        //
        //   : 
        //   key:
        //          WPF。
        //
        //     : 
        //     Win32    。
        public static int VirtualKeyFromKey(Key key);
    }
}

KeyInterop.KeyFromVirtualKey(KeyData)