c# 调用 vc dll 函数方法
需要写刷卡器系统， 调用vc dll，有部分我调用成功了，如下：
icdev = IC.rf_init_com(3,9600);
//对设备进行初始化
public unsafe class IC
{
[DllImport("MasterRD.dll", EntryPoint = "rf_init_com", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern int rf_init_com(int port, Int64 baud);
}
现在就差验证密匙的调用不成功，
下面是vc dll 函数说明
Mifareone 授权2
/*********************************************************
功能：用当前指定的密钥对卡片授权认证
参数： icdev： 通讯设备标识符
mode： 密码验证模式
block：要验证密码的绝对块号
key: 下载的密钥(6Byte),（我加的，key 验证密匙，6字节）
返回：成功则返回0
说明：model=0x60:验证A密钥
model=0x61:验证B密钥
*********************************************************/
int (WINAPI *rf_M1_authentication2)(unsigned short icdev,unsigned char mode,unsigned char block,unsigned char *key);
我写了2种方法：如下，但是都是返回值错误，本该返回0，2中方法都是返回1， 求助：：写代码最好，主要感觉问题出在最后一个参数，也就是密匙key。
调用：
////方法1
//byte[] key = new byte[6] { 255, 255, 255, 255, 255, 255 };
//Int16 checkIC_pwd = (short)IC.rf_M1_authentication2(icdev1,mode,block, ref key[0]);
//方法2
byte[] dd = new byte[6];
dd[0] = (byte)0xFF;
dd[1] = (byte)0xFF;
dd[2] = (byte)0xFF;
dd[3] = (byte)0xFF;
dd[4] = (byte)0xFF;
dd[5] = (byte)0xFF;
int xx = IC.rf_get_device_number(ref dve);
int checkIC_pwd = IC.rf_M1_authentication2(dve, 0x60, block,ref dd[0]);
下面是定义：
//方法1
//[DllImport("MasterRD.dll", EntryPoint = "rf_M1_authentication2", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
//public static extern int rf_M1_authentication2(ushort icdev, byte mode, byte block, ref byte key);
//方法2
[DllImport("MasterRD.dll", EntryPoint = "rf_M1_authentication2", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern int rf_M1_authentication2(IntPtr dve, byte model, byte block,ref byte pKey);
[解决办法]
byte 本色就是指针 不需要ref 你去掉ref试试
[解决办法]
试试这样
[DllImport("MasterRD.dll", EntryPoint = "rf_M1_authentication2", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern int rf_M1_authentication2(ushort dve, byte model, byte block, byte[] pKey);
byte[] key = new byte[6] { 255, 255, 255, 255, 255, 255 };
int checkIC_pwd = IC.rf_M1_authentication2(icdev1, mode, block, key);
[解决办法]
看你是静态编译还是动态编译的dll 最好是静态编译的
下面给你贴几个我通过的c#代码 c#调用vc dll
[DllImport("Kernel32")]
public static extern int GetProcAddress(int handle, string funcname);
[DllImport("Kernel32")]
public static extern int LoadLibrary(string funcname);
[DllImport("Kernel32")]
public static extern int FreeLibrary(int handle);
/// <summary>
/// 委托
/// </summary>
/// <param name="dllModule"></param>
/// <param name="functionname"></param>
/// <param name="t"></param>
/// <returns></returns>
public static Delegate qqGetAddress(int dllModule, string functionname, Type t)
{
int addr = MyLoadLibrary.GetProcAddress(dllModule, functionname);
if (addr == 0)
return null;
else
return Marshal.GetDelegateForFunctionPointer(new IntPtr(addr), t);
}
//声明
/// <summary>
/// QQ/TM聊天记录获取
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct SendQQMsgInfo
{
/// <summary>
/// 聊天类型：0=单人聊天，1=群聊天，2=讨论组聊天
/// </summary>
public uint QQMsgType;
/// <summary>
/// 本机QQ号码
/// </summary>
public uint SourceQQNum;
/// <summary>
/// 对方QQ号码
/// </summary>
public uint DestinationQQNum;
/// <summary>
/// 群号码或聊天组号码
/// </summary>
public uint GroupNum;
/// <summary>
/// 消息类型：true=发送，false=接收
/// </summary>
public bool bSend;
/// <summary>
/// 本机QQ昵称
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 30)]
public string SourceString;
/// <summary>
/// 对方QQ昵称或群聊天中消息发送人的昵称
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 40)]
public string DestinationString;
/// <summary>
/// 群名或聊天组名
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 30)]
public string GroupNameString;
/// <summary>
/// 消息内容
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 7000)]
public string TextString;
}
/// <summary>
/// 获取QQ/TM聊天记录
/// </summary>
/// <param name="sendmess"></param>
/// <returns></returns>
public delegate bool GetQQMsg(ref SendQQMsgInfo sendmess);
/// <summary>
/// 获取QQ聊天记录接口
/// </summary>
static DCNetClient.BLL.NetWordInit.GetQQMsg myQQmsg;
//使用
int huser32 = MyLoadLibrary.LoadLibrary("GetIM32Msg.dll");
myQQmsg = (DCNetClient.BLL.NetWordInit.GetQQMsg)MyLoadLibrary.qqGetAddress(huser32, "SendMsgInfo", typeof(DCNetClient.BLL.NetWordInit.GetQQMsg));
SendQQMsgInfo MyQQMsg = new SendQQMsgInfo();
myQQmsg(ref MyQQMsg);
这是静态调用
动态调用==给你
[解决办法]
/// <summary>
/// 获取网页浏览记录
/// </summary>
/// <returns></returns>
[DllImport("DcNetFilterDll.dll")]
public static extern bool GetNetLink(int hander, int hProcessEvent, byte[] pNetLinkBuf, int iNetLinkBufSize, ref int iGetLen);
pNetLinkBuf 是char* 指针
这里c#不需要用ref 本生byte就是指针
[解决办法]
[DllImport("MasterRD.dll", EntryPoint = "rf_M1_authentication2", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static unsafe extern int rf_M1_authentication2(IntPtr dve, byte model, byte block,byte* pKey);
byte[] key = new byte[6] { 255, 255, 255, 255, 255, 255 };
unsafe
{
fixed (byte* pkey = key)
{
IC.rf_M1_authentication2(dve, 0x60, block, pkey);
}
}