在IDCard.dll中无法找到SDT_OpenPort

发表于 2022-1-29 11:15

函数名没问题，可以编译，在进入运行后，使用该功能会中断运行，说在IDCard.dll中无法找到SDT_OpenPort的入口点？
[DllImport("IDCard.dll", EntryPoint = "SDT_GetCOMBaud", CharSet = CharSet.Ansi)]

复制

<div><div>    public static extern int SDT_GetCOMBaud(int iPort, ref uint puiBaudRate);</div><div>    [DllImport("IDCard.dll", EntryPoint = "SDT_OpenPort", CharSet = CharSet.Ansi)]</div><div>    public static extern int SDT_OpenPort(int iPort);</div><div> </div><div>            [DllImport("IDCard.dll", EntryPoint = "SDT_SetCOMBaud (int iPort, uint uiCurrBaud, uint uiSetBaud)SDT_OpenPort", CharSet = CharSet.Ansi)]</div><div>    public static extern int SDT_SetCOMBaud(int iPort);</div><div>    [DllImport("IDCard.dll", EntryPoint = "SDT_ClosePort", CharSet = CharSet.Ansi)]</div><div>    public static extern int SDT_ClosePort(int iPort);</div></div><div></div>

发表于 2022-1-29 11:16

复制

 

 private void button4_Click(object sender, EventArgs e)

        {

            IDCardData CardMsg = new IDCardData();

            int nRet, nPort;

            string stmp;

            byte[] cPath = new byte[255];

            byte[] pucIIN = new byte[4];

            byte[] pucSN = new byte[8];

            nPort = m_iPort;

 

                    if (SDT_OpenPort(nPort) == 0)

 

         }

发表于 2022-1-29 11:17

究竟是哪里出了问题

发表于 2022-2-22 11:14

不懂

[技术问答] 在IDCard.dll中无法找到SDT_OpenPort

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