Help with converted code. Hook compilation problem.

Erreur   1  error C3352: 'int IHMV2::FrmPrincipal::captureKey(int,System::IntPtr,System::IntPtr)' : la fonction spécifiée est incompatible avec le type délégué 'int (int,System::IntPtr,System::IntPtr)' 

//System level functions to be used for hook and unhook keyboard input  

    delegate int LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

      LowLevelKeyboardProc^ objKeyboardProcess;


    [DllImport("user32.dll", CharSet = CharSet::Auto, SetLastError = true)]

    static int SetWindowsHookEx(int id, LowLevelKeyboardProc^ callback, IntPtr hMod, int dwThreadId);

    [DllImport("user32.dll", CharSet = CharSet::Auto, SetLastError = true)]

    static bool UnhookWindowsHookEx(IntPtr hook);

    [DllImport("user32.dll", CharSet = CharSet::Auto, SetLastError = true)]

    static int CallNextHookEx(int hook, int nCode, IntPtr wp, IntPtr lp);

    [DllImport("kernel32.dll", CharSet = CharSet::Auto, SetLastError = true)]

    static IntPtr GetModuleHandle(String^ name);

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

    static short GetAsyncKeyState(Keys key);

    //Declaring Global objects     

      private: int ptrHook;

    


      public: int captureKey(int nCode, IntPtr wParam, IntPtr lParam)

      {

        if (nCode >= 0)

        {

            KBDLLHOOKSTRUCT^ objKeyInfo = (KBDLLHOOKSTRUCT)Marshal::PtrToStructure(lParam, KBDLLHOOKSTRUCT::typeid);

               

            // Disabling Windows keys 


            if (objKeyInfo->key == Keys::RWin || objKeyInfo->key == Keys::LWin || objKeyInfo->key == Keys::Tab && HasAltModifier(objKeyInfo->flags) || objKeyInfo->key == Keys::Escape && (ModifierKeys & Keys::Control) == Keys::Control)     

            {

                return 1; // if 0 is returned then All the above keys will be enabled

            }

        }

        return CallNextHookEx(ptrHook, nCode, wParam, lParam);

      }


    bool HasAltModifier(int flags)

    {

        return (flags & 0x20) == 0x20;

    }


      public:

      [StructLayout(LayoutKind::Sequential)]

      value struct KBDLLHOOKSTRUCT

    {

            public: Keys key;

            public: int scanCode;

            public: int flags;

            public: int time;

            public: IntPtr extra;

    };




private: System::Void FrmPrincipal_Load(System::Object^  sender, System::EventArgs^  e) {


                  ProcessModule^ objCurrentModule = Process::GetCurrentProcess()->MainModule;

                  objKeyboardProcess = gcnew LowLevelKeyboardProc(&FrmPrincipal::captureKey); // Error is here

                  ptrHook = SetWindowsHookEx(13, objKeyboardProcess, GetModuleHandle(objCurrentModule->ModuleName), 0);

                     }