c#調用C介面時指標參數的接入

指標的接入有兩種方式，

1.C#中的參考型別

2.C#中的指標實現

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Runtime.InteropServices;/// <summary>    /// 離線UK操作類    /// </summary>    public unsafe class UK    {        //參考型別變數實現        [DllImport("UK")]        extern static int UniKey_Find(ref uint handle, ref uint s1, ref uint s2);        [DllImport("UK")]        extern static int UniKey_Logoff(ref uint handle);                //[DllImport("UK")]        //extern static int UniKey_Log_On_Secu(ref uint handle, ref char[] password);        [DllImport("UK")]        extern static int UniKey_Log_On_Secu(ref uint handle, char[] password);        [DllImport("UK")]        extern static int UniKey_Log_Out_Secu(ref uint handle);        [DllImport("UK")]        extern static int UniKey_Get_Com_PanFu(ref uint handdle, ref char pDriveName);        //指標地址實現（不過要設定程式屬性允許不安全的程式碼）        [DllImport("UK")]        extern static int UniKey_Find(uint* handle, uint* s1, uint* s2);        [DllImport("UK")]        extern static int UniKey_Logoff(uint* handle);        [DllImport("UK")]        extern static int UniKey_Log_On_Secu(uint* handle, uint* password);        [DllImport("UK")]        extern static int UniKey_Log_Out_Secu(uint* handle);        [DllImport("UK")]        extern static int UniKey_Get_Com_PanFu(uint* handdle, char* pDriveName);        /// <summary>        /// 尋找UKey        /// </summary>        /// <returns></returns>        protected static int UKeyFind()        {            uint handle = 0;            uint s1 = 0;            uint s2 = 0;            int result = UniKey_Find(ref handle, ref s1, ref s2);            return result;        }        /// <summary>        /// 退出Ukey        /// </summary>        /// <param name="handle"></param>        /// <returns></returns>        protected static int UKeyLogoff()        {            uint handle = 0;            return UniKey_Logoff(ref handle);        }        /// <summary>        /// 登陸Ukey        /// </summary>        /// <returns></returns>        protected static int UKeyLogOnSecu()        {            uint handle = 0;            char[] password = new char[6] { '1', '2', '3', '4', '5', '6' };            int result = UniKey_Log_On_Secu(ref handle, password);            return result;        }        /// <summary>        /// 退出UKey        /// </summary>        /// <returns></returns>        protected static int UKeyLogOutSecu()        {            uint handle = 0;            return UniKey_Log_Out_Secu(ref handle);        }}