关于钩子库问题

  private static int MouseHookProc(int nCode, int wParam, IntPtr lParam)
        {
            if (nCode >= 0)
            {
                MouseLLHookStruct struct2 = (MouseLLHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseLLHookStruct));
                MouseButtons none = MouseButtons.None;
                short delta = 0;
                int clicks = 0;
                bool flag = false;
                bool flag2 = false;
                switch (wParam)
                {
                    case 0x201:
                        flag = true;
                        none = MouseButtons.Left;
                        clicks = 1;
                        break;                    case 0x202:
                        flag2 = true;
                        none = MouseButtons.Left;
                        clicks = 1;
                        break;                    case 0x203:
                        none = MouseButtons.Left;
                        clicks = 2;
                        break;                    case 0x204:
                        flag = true;
                        none = MouseButtons.Right;
                        clicks = 1;
                        break;                    case 0x205:
                        flag2 = true;
                        none = MouseButtons.Right;
                        clicks = 1;
                        break;                    case 0x206:
                        none = MouseButtons.Right;
                        clicks = 2;
                        break;                    case 0x20a:
                        delta = (short)((struct2.MouseData >> 0x10) & 0xffff);
                        break;
                }
                MouseEventExtArgs e = new MouseEventExtArgs(none, clicks, struct2.Point.X, struct2.Point.Y, delta);
                if ((s_MouseUp != null) && flag2)
                {
                    s_MouseUp(null,e);  //这里一直提示委托System.Windows.Form.MouseEventHandler一些参数无效
                }
                if ((s_MouseDown != null) && flag)
                {
                    s_MouseDown(null, e); //这里一直提示委托System.Windows.Form.MouseEventHandler一些参数无效
                }
                if ((s_MouseClick != null) && (clicks > 0))
                {
                    s_MouseClick(null, e); //这里一直提示委托System.Windows.Form.MouseEventHandler一些参数无效
                }
                if ((s_MouseClickExt != null) && (clicks > 0))
                {
                    s_MouseClickExt(null, e);
                }
                if ((myMouseDoubleClick != null) && (clicks == 2))
                {
                    myMouseDoubleClick(null, e);
                }
                if ((s_MouseWheel != null) && (delta != 0))
                {
                    s_MouseWheel(null, e);
                }
                if (((s_MouseMove != null) || (s_MouseMoveExt != null)) && ((m_OldX != struct2.Point.X) || (m_OldY != struct2.Point.Y)))
                {
                    m_OldX = struct2.Point.X;
                    m_OldY = struct2.Point.Y;
                    if (s_MouseMove != null)
                    {
                        s_MouseMove(null, e);
                    }
                    if (s_MouseMoveExt != null)
                    {
                        s_MouseMoveExt(null, e);
                    }
                }
                if (e.Handled)
                {
                    return -1;
                }
            }
            return CallNextHookEx(s_MouseHookHandle, nCode, wParam, lParam);
        }        private static void OnMouseUp(object sender, MouseEventArgs e)//这里一直MouseEventArgs文件冲突
        {
            if (e.Clicks >= 1)
            {
                if (e.Button.Equals(s_PrevClickedButton))
                {
                    if (myMouseDoubleClick != null)
                    {
                        myMouseDoubleClick(null, e); //这里一直提示委托System.Windows.Form.MouseEventHandler一些参数无效
                    }
                    s_DoubleClickTimer.Enabled = false;
                    s_PrevClickedButton = MouseButtons.None;
                }
                else
                {
                    s_DoubleClickTimer.Enabled = true;
                    s_PrevClickedButton = e.Button;
                }
            }
        }
请问大神该怎么修改？？万分感谢