• C#版OPOS打印(基于北洋OPOS SDK二次开发包,支持EPSON和北洋、佳博、商祺等支持标准ESC/POS指令的POS打印机)


    C#版OPOS打印
    • 基于北洋OPOS SDK二次开发包,支持EPSON和北洋、佳博、商祺等支持标准ESC/POS指令的POS打印机
    • 支持并口,串口,网口,USB口,驱动方式等多种端口
    • 支持开关钱箱
    • 支持条码打印
    • SDK中支持的其他设备的控制(扫描枪等)

    北洋SDK中只有VB和Delphi的例程,所以参照Delphi转成了C#的版本,并集成到软件中实际应用。希望给需要了解C#使用OPOS SDK开发的朋友提供一些帮助。

    废话少说,直接上代码。

    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Runtime.InteropServices;
    using System.IO.Ports;

    namespace RMSPOS
    {
        /// <summary>
        /// 北洋OPOS指令集二次开发包DLL调用 
        ///
        /// 备注:
        /// 因为北洋的demo包里没有C#的,所以参考delphi包的代码转成了C#的.
        /// 北洋的dll支持市面上所有的 支持ESC/ POS指令的小票打印机的打印(EPSON,佳博,中崎等)
        ///
        /// 如果有任何修改请邮件通知本人,欢迎志同道合的朋友共同交流;
        /// coder: 萧远峰  mail: 71008973@qq.com
        ///
        /// POSDLL 动态库的出口函数是用来直接控制 POS 打印机工作的,
        /// 分为四个部分:通用函数、标准模式打印函数、页模式打印函数、调试等函数。
        /// </summary>
        public class BeiYangOPOS
        {
            const string _DllVer = "1.4";
            /// <summary>
            /// 获取动态库版本号
            /// </summary>
            public string GetDllVer
            {
                get { return _DllVer;}
            }

         
            /// <summary>
            /// 设备打开后的句柄
            /// </summary>
            public IntPtr POS_IntPtr;

            /// <summary>
            /// 函数返回值
            /// </summary>
            public uint POS_SUCCESS = 1001;//  函数执行成功
            public uint POS_FAIL = 1002;   //  函数执行失败
            public uint POS_ERROR_INVALID_HANDLE = 1101; // 端口或文件的句柄无效
            public uint POS_ERROR_INVALID_PARAMETER = 1102;// 参数无效
            public uint POS_ERROR_NOT_BITMAP = 1103 ; // 不是位图格式的文件
            public uint POS_ERROR_NOT_MONO_BITMAP = 1104;// 位图不是单色的
            public uint POS_ERROR_BEYONG_AREA = 1105 ;//位图超出打印机可以处理的大小
            public uint POS_ERROR_INVALID_PATH = 1106; // 没有找到指定的文件路径或名

            /// <summary>
            /// 停止位
            /// </summary>
            public uint POS_COM_ONESTOPBIT = 0x00;//停止位为1
            public uint POS_COM_ONE5STOPBITS = 0x01;//停止位为1.5
            public uint POS_COM_TWOSTOPBITS = 0x02;//停止位为2
            /// <summary>
            /// 奇偶校验
            /// </summary>
            public uint POS_COM_NOPARITY = 0x00;//无校验
            public uint POS_COM_ODDPARITY = 0x01;//奇校验
            public uint POS_COM_EVENPARITY = 0x02;//偶校验
            public uint POS_COM_MARKPARITY = 0x03;//标记校验
            public uint POS_COM_SPACEPARITY = 0x04;//空格校验
            /// <summary>
            /// 其他COM口参数及端口类型定义
            /// </summary>
            public uint POS_COM_DTR_DSR = 0x00;// 流控制为DTR/DST 
            public uint POS_COM_RTS_CTS = 0x01;// 流控制为RTS/CTS
            public uint POS_COM_XON_XOFF = 0x02;// 流控制为XON/OFF
            public uint POS_COM_NO_HANDSHAKE = 0x03;//无握手
            public uint POS_OPEN_PARALLEL_PORT = 0x12;//打开并口通讯端口
            public uint POS_OPEN_BYUSB_PORT = 0x13;//打开USB通讯端口
            public uint POS_OPEN_PRINTNAME = 0X14;// 打开打印机驱动程序
            public uint POS_OPEN_NETPORT = 0x15;// 打开网络接口

            public uint POS_CUT_MODE_FULL = 0x00;// 全切
            public uint POS_CUT_MODE_PARTIAL = 0x01;// 半切

            /// <summary>
            /// 打开POS机的端口 开始会话
            /// </summary>
            /// <param name="lpName">
            ///指向以 null 结尾的打印机名称或端口名称。
            ///当参数nParam的值为POS_COM_DTR_DSR、POS_COM_RTS_CTS、POS_COM_XON_XOFF或POS_COM_NO_HANDSHAKE 时, “COM1”,“COM2”,“COM3”,“COM4”等表示串口;
            ///当参数nParam的值为POS_OPEN_PARALLEL_PORT时,“LPT1”,“LPT2”等表示并口;
            ///当参数nParam的值为POS_OPEN_BYUSB_PORT时,“BYUSB-0”、“BYUSB-1”、“BYUSB-2”、“BYUSB-3”等表示USB端口。
            ///当参数nParam的值为POS_OPEN_PRINTNAME时,表示打开指定的打印机。
            ///当参数nParam的值为POS_OPEN_NETPORT时,表示打开指定的网络接口,如“192.168.10.251”表示网络接口IP地址</param>
            /// <param name="nComBaudrate">串口通信需要的波特率</param>
            /// <param name="nComDataBits">串口通信需要的数据位</param>
            /// <param name="nComStopBits">串口通信需要的停止位</param>
            /// <param name="nComParity">串口通信需要的是否要奇偶校验</param>
            /// <param name="nParam">指向以 null 结尾的打印机名称或端口名称。
            /// 参数nParam的值为POS_COM_DTR_DSR、POS_COM_RTS_CTS、POS_COM_XON_XOFF或POS_COM_NO_HANDSHAKE 时,
            /// “COM1”,“COM2”,“COM3”,“COM4”等表示串口;
            /// 当参数nParam的值为POS_OPEN_PARALLEL_PORT时,“LPT1”,“LPT2”等表示并口;
            /// 当参数nParam的值为POS_OPEN_BYUSB_PORT时,“BYUSB-0”、“BYUSB-1”、“BYUSB-2”、“BYUSB-3”等表示USB端口。
            /// 当参数nParam的值为POS_OPEN_PRINTNAME时,表示打开指定的打印机。</param>
            /// <returns>如果函数调用成功,返回一个已打开的端口句柄。如果函数调用失败,返回值为 INVALID_HANDLE_VALUE (-1)。</returns>
            [DllImport("POSDLL.dll", CharSet = CharSet.Ansi)]
            public static extern IntPtr POS_Open([MarshalAs(UnmanagedType.LPStr)]string lpName,
                                                 uint nComBaudrate,
                                                 uint nComDataBits,
                                                 uint nComStopBits,
                                                 uint nComParity,
                                                 uint nParam);

            /// <summary>
            /// 关闭已经打开的并口或串口,USB端口,网络接口或打印机。
            /// </summary>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_Close();

            /// <summary>
            /// 复位打印机,把打印缓冲区中的数据清除,字符和行高的设置被清除,打印模式被恢复到上电时的缺省模式。
            /// </summary>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_Reset();

            /// <summary>
            /// 设置打印机的移动单位。
            /// </summary>
            /// <param name="nHorizontalMU">把水平方向上的移动单位设置为 25.4 / nHorizontalMU 毫米。可以为0到255。</param>
            /// <param name="nVerticalMU">把垂直方向上的移动单位设置为 25.4 / nVerticalMU 毫米。可以为0到255。</param>
            /// <returns>
            /// 如果函数成功,则返回值为 POS_SUCCESS。
            /// 如果函数失败,则返回值为以下值之一:POS_FAIL POS_ERROR_INVALID_HANDLE POS_ERROR_INVALID_PARAMETER </returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_SetMotionUnit(uint nHorizontalMU, uint nVerticalMU);
            /// <summary>
            /// 选择国际字符集和代码页
            /// </summary>
            /// <param name="nCharSet">
            /// 指定国际字符集。不同的国际字符集对0x23到0x7E的ASCII码值对应的符号定义是不同的。
            /// 可以为以下列表中所列值之一。
            /// 0x00 U.S.A  0x01 France  0x02 Germany  0x03 U.K. 0x04 Denmark I 0x05 Sweden
            /// 0x06 Italy 0x07 Spain I  0x08 Japan 0x09 Nonway 0x0A Denmark II 0x0B Spain II
            /// 0x0C Latin America 0x0D Korea </param>
            /// <param name="nCodePage">
            /// 指定字符的代码页。不同的代码页对0x80到0xFF的ASCII码值对应的符号定义是不同的。
            /// 0x00 PC437 [U.S.A. Standard Europe 0x01 Reserved 0x02 PC850 [Multilingual]
            /// 0x03 PC860 [Portuguese] 0x04 PC863 [Canadian-French] 0x05 PC865 [Nordic]
            /// 0x12 PC852 0x13 PC858
            /// </param>
            /// <returns>
            /// 如果函数成功,则返回值为 POS_SUCCESS。
            /// 如果函数失败,则返回值为以下值之一:POS_FAIL POS_ERROR_INVALID_HANDLE POS_ERROR_INVALID_PARAMETER </returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_SetCharSetAndCodePage(uint nCharSet, uint nCodePage);

            /// <summary>
            /// POS字体样式
            /// </summary>
            ///
            public uint  POS_FONT_TYPE_STANDARD  = 0x00;// 标准 ASCII
            public uint  POS_FONT_TYPE_COMPRESSED = 0x01;// 压缩 ASCII 
            public uint  POS_FONT_TYPE_UDC = 0x02;       // 用户自定义字符
            public uint  POS_FONT_TYPE_CHINESE = 0x03;   // 标准 “宋体”
            public uint  POS_FONT_STYLE_NORMAL =  0x00;   //  正常
            public uint  POS_FONT_STYLE_BOLD =  0x08;   //  加粗
            public uint  POS_FONT_STYLE_THIN_UNDERLINE =  0x80;   //  1点粗的下划线
            public uint  POS_FONT_STYLE_THICK_UNDERLINE =  0x100;   //  2点粗的下划线
            public uint  POS_FONT_STYLE_UPSIDEDOWN =  0x200;   //  倒置(只在行首有效)
            public uint  POS_FONT_STYLE_REVERSE =  0x400;   //  反显(黑底白字)
            public uint  POS_FONT_STYLE_SMOOTH =  0x800;   //  平滑处理(用于放大时)
            public uint POS_FONT_STYLE_CLOCKWISE_90 = 0x1000;   //  每个字符顺时针旋转 90 度

            /// <summary>
            /// 把将要打印的字符串数据发送到打印缓冲区中,并指定X 方向(水平)上的绝对起始点位置,
            /// 指定每个字符宽度和高度方向上的放大倍数、类型和风格。
            /// </summary>
            /// <param name="pszString">指向以 null 结尾的字符串缓冲区</param>
            /// <param name="nOrgx">指定 X 方向(水平)的起始点位置离左边界的点数。</param>
            /// <param name="nWidthTimes">指定字符的宽度方向上的放大倍数。可以为 1到 6。</param>
            /// <param name="nHeightTimes">指定字符高度方向上的放大倍数。可以为 1 到 6。</param>
            /// <param name="nFontType">指定字符的字体类型。</param>
            /// <param name="nFontStyle">指定字符的字体风格。</param>
            /// <returns></returns>
           
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_S_TextOut([MarshalAs(UnmanagedType.LPStr)]string pszString,
                                                       uint nOrgx, uint nWidthTimes, uint nHeightTimes,
                                                       uint nFontType, uint nFontStyle);

            /// <summary>
            /// 设置POS的打印模式 (只有两种 页模式和标准模式)
            /// </summary>
            /// <param name="nPrintMode">
            /// POS_PRINT_MODE_STANDARD 0x00 标准模式(行模式)
            /// POS_PRINT_MODE_PAGE 0x01 页模式
            /// POS_PRINT_MODE_BLACK_MARK_LABEL 0x02 黑标记标签模式
            /// POS_PRINT_MODE_WHITE_MARK_LABEL 0x03 白标记标签模式 </param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_SetMode(uint nPrintMode);
            /// <summary>
            /// 设置字符的行高。
            /// </summary>
            /// <param name="nDistance">指定行高点数。可以为 0 到 255。每点的距离与打印头分辨率相关。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_SetLineSpacing(uint nDistance);
            /// <summary>
            /// 设置字符的右间距(相邻两个字符的间隙距离)。
            /// </summary>
            /// <param name="nDistance">指定右间距的点数。可以为 0 到 255。每点的距离与打印头分辨率相关。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_SetRightSpacing(int nDistance);

            /// <summary>
            /// 向前走纸。
            /// 1.如果在标准打印模式(行模式)下打印文本,则打印缓冲区中的数据,且打印位置自动移动到下一行的行首。
            /// 2.如果在标准打印模式(行模式)下打印位图,则在指定的位置打印位图,且打印位置自动移动到下一行的行首。
            /// 3.如果在页模式或标签模式下,则把需要打印的数据设置在指定的位置,同时把打印位置移动到下一个行首,
            /// 但是并不立即进纸并打印,而是一直到调用 POS_PL_Print 函数时才打印。
            /// </summary>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_FeedLine();
            /// <summary>
            /// 打印头换n行
            /// </summary>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_FeedLines(uint nLines);
           
            /// <summary>
            /// 切纸
            /// </summary>
            /// <param name="nMode">模式编号 半切或是全切</param>
            /// <param name="nDistance">走位的距离</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_CutPaper(uint nMode, uint nDistance);

            /// <summary>
            /// 设置右边距
            /// </summary>
            /// <param name="nDistance">右边距</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_SetRightSpacing(uint nDistance);
            /// <summary>
            /// 预下载一幅位图到打印机的 RAM 中,同时指定此位图的 ID 号。
            /// </summary>
            /// <param name="pszPath">指向以 null 结尾的表示位图路径及其文件名的字符串。</param>
            /// <param name="nID">指定将要下载的位图的 ID 号。可以为 0 到 7。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PreDownloadBmpToRAM([MarshalAs(UnmanagedType.LPStr)]string pszPath, uint nID);
            /// <summary>
            /// 下载并打印位图
            /// </summary>
            /// <param name="pszPath">指向以null 结尾的包含位图文件路径及其名称的字符串。</param>
            /// <param name="nOrgx">指定将要打印的位图和左边界的距离点数。可以为 0到 65535 点。</param>
            /// <param name="nMode">指定位图的打印模式。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_S_DownloadAndPrintBmp([MarshalAs(UnmanagedType.LPStr)]string pszPath, uint nOrgx, uint nMode);

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_S_PrintBmpInRAM(uint nID, uint nOrgx, uint nMode);

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_S_PrintBmpInFlash(uint nID, uint nOrgx, uint nMode);

            /// <summary>
            /// 通过串口返回当前打印机的状态。此函数是实时的。
            /// </summary>
            /// <param name="address"></param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_RTQueryStatus(byte[] address);

            /// <summary>
            /// 通过串口查询打印机当前的状态。此函数是非实时的。
            /// </summary>
            /// <param name="pszStatus">
            /// 指向返回的状态数据的缓冲区,缓冲区大小为 1 个字节。
            /// 0,1 0/1 容纸器中有纸 / 纸将用尽 2,3 0/1 打印头处有纸 / 无纸
            /// 4,5 0/1 钱箱连接器引脚 3 的电平为低 / 高(表示打开或关闭)
            /// 6,7 0 保留(固定为0)
            /// </param>
            /// <param name="nTimeouts">设置查询状态时大约的超时时间(毫秒)。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_QueryStatus(byte[] pszStatus, int nTimeouts);
            /// <summary>
            /// 通过网络接口查询返回当前打印机的状态。
            /// </summary>
            /// <param name="ipAddress">设备IP地址。如“192.168.10.251”。</param>
            /// <param name="pszStatus">
            /// 指向接收返回状态的缓冲区,缓冲区大小为 1 个字节。
            /// 0 0/1 钱箱连接器引脚 3 的电平为低/高(表示打开或关闭)
            /// 1 0/1 打印机联机/脱机
            /// 2 0/1 上盖关闭/打开
            /// 3 0/1 没有/正在由Feed键按下而进纸
            /// 4 0/1 打印机没有/有出错
            /// 5 0/1 切刀没有/有出错
            /// 6 0/1 有纸/纸将尽(纸将尽传感器探测)
            /// 7 0/1 有纸/纸用尽(纸传感器探测)
            /// </param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern int POS_NETQueryStatus([MarshalAs(UnmanagedType.LPStr)]string ipAddress, out Byte pszStatus);

           
            /// <summary>
            /// 设置并打印条码。
            /// </summary>
            /// <param name="pszInfo">指向以 null 结尾的字符串。每个字符允许的范围和格式与具体条码类型有关。</param>
            /// <param name="nOrgx">指定将要打印的条码的水平起始点与左边界的距离点数。可以为 0 到65535。</param>
            /// <param name="nType">
            /// 指定条码的类型。可以为以下列表中所列值之一。
            /// POS_BARCODE_TYPE_UPC_A 0x41 UPC-A POS_BARCODE_TYPE_UPC_E 0x42 UPC-C
            /// POS_BARCODE_TYPE_JAN13 0x43 JAN13(EAN13) POS_BARCODE_TYPE_JAN8 0x44 JAN8(EAN8)
            /// POS_BARCODE_TYPE_CODE39 0x45 CODE39 POS_BARCODE_TYPE_ITF 0x46 INTERLEAVED 2 OF 5
            /// POS_BARCODE_TYPE_CODEBAR 0x47 CODEBAR POS_BARCODE_TYPE_CODE93 0x48 25
            /// POS_BARCODE_TYPE_CODE128 0x49 CODE 128 </param>
            /// <param name="nWidthX">
            /// 指定条码的基本元素宽度。
            /// 2 0.25mm 0.25mm 0.625mm 3 0.375mm 0.375mm 1.0mm 4 0.5mm 0.5mm 1.25mm
            /// 5 0.625mm 0.625mm 1.625mm 6 0.75mm 0.75mm 1.875mm
            /// </param>
            /// <param name="nheight">指定条码的高度点数。可以为 1 到 255 。默认值为162 点。</param>
            /// <param name="nHriFontType">
            /// 指定 HRI(Human Readable Interpretation)字符的字体类型。可以为以下列表中所列值之一。
            /// POS_FONT_TYPE_STANDARD 0x00 标准ASCII POS_FONT_TYPE_COMPRESSED 0x01 压缩ASCII
            /// </param>
            /// <param name="nHriFontPosition">
            /// 指定HRI(Human Readable Interpretation)字符的位置。
            /// POS_HRI_POSITION_NONE  0x00 不打印 POS_HRI_POSITION_ABOVE 0x01 只在条码上方打印
            /// POS_HRI_POSITION_BELOW 0x02 只在条码下方打印 POS_HRI_POSITION_BOTH  0x03 条码上、下方都打印
            /// </param>
            /// <param name="nBytesOfInfo">指定由参数 pszInfoBuffer指向的字符串个数,即将要发送给打印机的字符总数。具体值与条码类型有关。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_S_SetBarcode([MarshalAs(UnmanagedType.LPStr)]string pszInfo,
                                                          uint nOrgx,uint nType,uint nWidthX,uint nheight,
                                                          uint nHriFontType,uint nHriFontPosition,uint nBytesOfInfo);


            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_SetArea(uint nOrgx , uint nOrgY , uint nWidth , uint nheight , uint nDirection );

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_TextOut([MarshalAs(UnmanagedType.LPStr)]string pszString,uint nOrgx,uint nOrgY,
                                                       uint nWidthTimes, uint nHeightTimes, uint nFontType, uint nFontStyle);

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_PrintBmpInRAM(uint nID , uint nOrgx , uint nOrgY , uint nMode );

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_PrintBmpInFlash(uint nID, uint nOrgx, uint nOrgY, uint nMode);

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_SetBarcode([MarshalAs(UnmanagedType.LPStr)]string pszInfo,
                                                           uint nOrgx , uint nOrgY , uint nType , uint nWidthX,uint nheight,
                                                           uint nHriFontType,uint nHriFontPosition,uint nBytesOfInfo);

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_Clear();

            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_PL_Print();
            /// <summary>
            /// 往钱箱引脚发送脉冲以打开钱箱。
            /// </summary>
            /// <param name="nID">指定钱箱的引脚。0x00 钱箱连接器引脚2 0x01 钱箱连接器引脚5 </param>
            /// <param name="nOnTimes">指定往钱箱发送的高电平脉冲保持时间,即 nOnTimes × 2 毫秒。可以为1 到 255。</param>
            /// <param name="nOffTimes">指定往钱箱发送的低电平脉冲保持时间,即 nOffTimes × 2 毫秒。可以为1 到 255。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_KickOutDrawer(uint nID, uint nOnTimes, uint nOffTimes);
            /// <summary>
            /// 新建一个打印作业。
            /// </summary>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern bool POS_StartDoc();
            /// <summary>
            /// 结束一个打印作业。
            /// </summary>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern bool POS_EndDoc();
            /// <summary>
            /// 发送数据到端口或文件。通用端口打印可以使用此函数 一般不能设置字体大小样式等
            /// </summary>
            /// <param name="hPort">端口或文件句柄。可以通过POS_Open来获取</param>
            /// <param name="pszData">指向将要发送的数据缓冲区。</param>
            /// <param name="nBytesToWrite">指定将要发送的数据的字节数。</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_WriteFile(IntPtr hPort, byte[] pszData, uint nBytesToWrite);
            /// <summary>
            /// 从串口,或USB端口或文件读数据到指定的缓冲区。
            /// </summary>
            /// <param name="hPort">端口或文件句柄。可以通过POS_Open来获取</param>
            /// <param name="pszData">指向将要读取的数据缓冲区。</param>
            /// <param name="nBytesToRead">数据的字节数</param>
            /// <param name="nTimeouts">可能是读取数据的间隔时间</param>
            /// <returns></returns>
            [DllImport("POSDLL.dll", SetLastError = true)]
            public static extern IntPtr POS_ReadFile(IntPtr hPort, byte[] pszData, uint nBytesToRead, uint nTimeouts);

            /// <summary>
            /// 打开打印设备的串口
            /// </summary>
            /// <param name="PrintSerialPort">串口对象(需要先初始化并测试参数都有效的情况下,传进来)</param>
            /// <returns>是否打开成功</returns>
            public bool OpenComPort(ref SerialPort PrintSerialPort)
            {
                uint i_stopbits=0;
                if (PrintSerialPort.StopBits== StopBits.One)
                    i_stopbits=POS_COM_ONESTOPBIT;
                if (PrintSerialPort.StopBits== StopBits.OnePointFive)
                    i_stopbits=POS_COM_ONE5STOPBITS;
                if (PrintSerialPort.StopBits== StopBits.Two)
                    i_stopbits=POS_COM_TWOSTOPBITS;

                uint i_nComParity=0;
                if (PrintSerialPort.Parity== Parity.None)
                    i_nComParity=POS_COM_NOPARITY;
                if (PrintSerialPort.Parity== Parity.Even)
                    i_nComParity=POS_COM_EVENPARITY;
                if (PrintSerialPort.Parity== Parity.Odd)
                    i_nComParity=POS_COM_ODDPARITY;
                if (PrintSerialPort.Parity== Parity.Space)
                    i_nComParity=POS_COM_SPACEPARITY;
                if (PrintSerialPort.Parity== Parity.Mark)
                    i_nComParity=POS_COM_MARKPARITY;

                uint i_para=0;
                if (PrintSerialPort.Handshake== Handshake.None)
                    i_para=POS_COM_NO_HANDSHAKE;
                if (PrintSerialPort.Handshake== Handshake.RequestToSend)
                    i_para=POS_COM_DTR_DSR;
                if (PrintSerialPort.Handshake== Handshake.RequestToSendXOnXOff)
                    i_para=POS_COM_RTS_CTS;
                if (PrintSerialPort.Handshake== Handshake.XOnXOff)
                    i_para=POS_COM_XON_XOFF;

                POS_IntPtr = POS_Open(PrintSerialPort.PortName,
                                     (uint)PrintSerialPort.BaudRate,
                                     (uint)PrintSerialPort.DataBits,
                                     i_stopbits, i_nComParity, i_para);

                if ((int)POS_IntPtr != -1)
                    return true;
                else
                    return false;
            }
            /// <summary>
            /// 打开打印设备并口
            /// </summary>
            /// <param name="LPTPortName">并口名称</param>
            /// <returns>是否打开成功</returns>
            public bool OpenLPTPort(string LPTPortName)
            {
                POS_IntPtr = POS_Open(LPTPortName, 0, 0, 0, 0, POS_OPEN_PARALLEL_PORT);
                if ((int)POS_IntPtr != -1)
                    return true;
                else
                    return false;
            }
            /// <summary>
            /// 打开打印设备的网口
            /// </summary>
            /// <param name="IPAddress">设备的IP地址</param>
            /// <returns>是否打开成功</returns>
            public bool OpenNetPort(string IPAddress)
            {
                POS_IntPtr = POS_Open(IPAddress, 0, 0, 0, 0, POS_OPEN_NETPORT);
                if ((int)POS_IntPtr != -1)
                    return true;
                else
                    return false;
            }
            /// <summary>
            /// 打开打印设备的USB端口
            /// </summary>
            /// <param name="USBPortName">“BYUSB-0”、“BYUSB-1”、“BYUSB-2”、“BYUSB-3”</param>
            /// <returns>是否打开成功</returns>
            public bool OpenUSBPort(string USBPortName)
            {
                POS_IntPtr = POS_Open(USBPortName, 0, 0, 0, 0, POS_OPEN_BYUSB_PORT);
                if ((int)POS_IntPtr != -1)
                    return true;
                else
                    return false;
            }
            /// <summary>
            /// 使用windows打印驱动程序来驱动OPOS设备
            /// </summary>
            /// <param name="PrintName">打印驱动程序对应的打印机名称</param>
            /// <returns>是否打开成功</returns>
            public bool OpenPrinter(string PrintName)
            {
                POS_IntPtr = POS_Open(PrintName, 0, 0, 0, 0, POS_OPEN_PRINTNAME);
                if ((int)POS_IntPtr != -1)
                    return true;
                else
                    return false;
            }
            /// <summary>
            /// 关闭设备端口
            /// </summary>
            /// <returns>是否关闭成功</returns>
            public bool ClosePrinterPort()
            {
                IntPtr tmpIntPtr = POS_Close();
                return ((uint)tmpIntPtr == POS_SUCCESS);
            }
        }
    }

    使用时的例子:

    /// <summary>
            /// 执行OPOS方式的打印作业
            /// </summary>
            public void PrintBillWithOPOSMode()
            {
                DataRow dr = GetPortParaData(PrintPortType);
                bool IsOpen = false;
                #region 打开端口
                switch (PrintPortType)
                {
                    case "并口":
                        IsOpen = opos.OpenLPTPort(dr[1].ToString());
                        break;
                    case "串口":
                        System.IO.Ports.SerialPort sPort = new System.IO.Ports.SerialPort();
                        sPort.PortName = dr[1].ToString();
                        sPort.BaudRate = int.Parse(dr[2].ToString());
                        sPort.DataBits = int.Parse(dr[3].ToString());
                        sPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), dr[4].ToString());
                        sPort.Parity = (Parity)Enum.Parse(typeof(Parity), dr[5].ToString());
                        sPort.Handshake = (Handshake)Enum.Parse(typeof(Handshake), dr[6].ToString());
                        IsOpen = opos.OpenComPort(ref sPort);
                        sPort.Dispose();
                        break;
                    case "USB":
                        IsOpen = opos.OpenUSBPort(dr[1].ToString());
                        break;
                    case "驱动程序":
                        IsOpen = opos.OpenPrinter(dr[1].ToString());
                        break;
                    case "网口":
                        IsOpen = opos.OpenNetPort(dr[1].ToString());
                        break;
                }
                #endregion
                #region 执行打印
                for (int i = 0; i < PrintNum; i++)
                {
                    switch (PaperSize)
                    {
                        case 80:
                            OPOSPrintPageHome80mmTitle();
                            OPOSPrintPage80mmRedetail();
                            OPOSPrintPage80mmFoot();
                            break;
                        case 76:
                            OPOSPrintPageHome76mmTitle();
                            OPOSPrintPage76mmRedetail();
                            OPOSPrintPage76mmFoot();
                            break;
                        case 58:
                            OPOSPrintPageHome58mmTitle();
                            OPOSPrintPage58mmRedetail();
                            OPOSPrintPage58mmFoot();
                            break;
                    }
                }
                #endregion
                //关闭端口
                opos.ClosePrinterPort();
            }

    private void OPOSPrintPageHome80mmTitle()
            {
                BeiYangOPOS.POS_SetRightSpacing(0);
                BeiYangOPOS.POS_SetLineSpacing(80);
                BeiYangOPOS.POS_S_TextOut(_CompInfo_Dr["HotelChName"].ToString(), 140, 1, 2, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_BOLD);
                BeiYangOPOS.POS_FeedLine();
                if (_CompInfo_Dr["HotelEnName"].ToString().Trim().Length > 0)
                {
                    BeiYangOPOS.POS_S_TextOut(_CompInfo_Dr["HotelEnName"].ToString(), 140, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                    BeiYangOPOS.POS_FeedLine();
                }
                BeiYangOPOS.POS_SetLineSpacing(30);
                BeiYangOPOS.POS_S_TextOut(ReportAttTitleName + ReportTitleName, 120, 2, 2, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_BOLD);
                BeiYangOPOS.POS_FeedLine();
                BeiYangOPOS.POS_S_TextOut("-----------------------------------------", 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                BeiYangOPOS.POS_S_TextOut("帐单号:" + FolioNo + @"#" + "         " + "流水号:" + IdentNo,
                                          0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                BeiYangOPOS.POS_S_TextOut("-----------------------------------------", 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                BeiYangOPOS.POS_S_TextOut("开台:" + OpenTableTime, 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                object obj_CurrentDateTime = GlobalData.m_globaldate.Sql.ExecuteScalar("SELECT GETDATE()");
                if ((obj_CurrentDateTime != null) && (obj_CurrentDateTime != DBNull.Value))
                {
                    BeiYangOPOS.POS_S_TextOut("结账:" + obj_CurrentDateTime.ToString(), 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                    BeiYangOPOS.POS_FeedLine();
                }
                BeiYangOPOS.POS_S_TextOut("收银:" + GlobalData.m_globaldate.loginInfo.CurUserID + "     " + "班别:" + GlobalData.m_globaldate.loginInfo.CurMktTitle,
                                          0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                string[] tmpAcc = CashGuestAccountNo.Split(",".ToCharArray());
                BeiYangOPOS.POS_S_TextOut("结账桌数:" + tmpAcc.Length.ToString() + "     " + "消费人数:" + ConsumtPersons,
                                          0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                BeiYangOPOS.POS_S_TextOut("-----------------------------------------", 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
                if (tmpAcc.Length == 1)
                    BeiYangOPOS.POS_S_TextOut("消费项目名称  单价*数量    记账金额", 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_BOLD);
                else BeiYangOPOS.POS_S_TextOut("台号 消费项目名称  单价*数量    记账金额", 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_BOLD);                
                BeiYangOPOS.POS_FeedLine();
                BeiYangOPOS.POS_S_TextOut("-----------------------------------------", 0, 1, 1, opos.POS_FONT_TYPE_STANDARD, opos.POS_FONT_STYLE_NORMAL);
                BeiYangOPOS.POS_FeedLine();
            }

           开钱箱:

            /// <summary>
            /// 执行开钱箱操作
            /// </summary>
            private void ExecuteOpenCashBoxOperate()
            {
               
                string PortType = POSSetting.OPOS_CFG_DS.OtherCFGSetDT.Rows[1][2].ToString();
                DataRow dr = GetPortParaData(PortType);
                if (dr != null)
                {
                    bool IsOpen = false;
                    BeiYangOPOS BYOPOS = new BeiYangOPOS();
                    try
                    {                   
                        switch (PortType.Trim())
                        {
                            case "并口":
                                IsOpen = BYOPOS.OpenLPTPort(dr[1].ToString());
                                break;
                            case "串口":
                                SerialPort sPort = new SerialPort();
                                sPort.PortName = dr[1].ToString();
                                sPort.BaudRate = int.Parse(dr[2].ToString());
                                sPort.DataBits = int.Parse(dr[3].ToString());
                                sPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), dr[4].ToString());
                                sPort.Parity = (Parity)Enum.Parse(typeof(Parity), dr[5].ToString());
                                sPort.Handshake = (Handshake)Enum.Parse(typeof(Handshake), dr[6].ToString());
                                IsOpen = BYOPOS.OpenComPort(ref sPort);
                                sPort.Dispose();
                                break;
                            case "USB":
                                IsOpen = BYOPOS.OpenUSBPort(dr[1].ToString());
                                break;
                            case "驱动程序":
                                IsOpen = BYOPOS.OpenPrinter(dr[1].ToString());
                                break;
                            case "网口":
                                IsOpen = BYOPOS.OpenNetPort(dr[1].ToString());
                                break;
                        }
                        if (IsOpen)
                        {
                            IntPtr res = BeiYangOPOS.POS_KickOutDrawer(0x00, 100, 80);
                            if ((uint)res != BYOPOS.POS_SUCCESS)
                                LogManager.WriteLog("POSErr", "开钱箱失败!指令调用返回值:" + res.ToString());
                            BYOPOS.ClosePrinterPort();
                        }                   
                    }
                    catch (Exception ex)
                    {
                        LogManager.WriteLog("POSErr", ex.Message + Environment.NewLine + ex.StackTrace);
                    }
                    finally
                    {
                        BYOPOS.ClosePrinterPort();
                    }
                }
                else
                {
                    MessageBox.Show("读取打印机端口和开钱箱指令对应的参数出错!请在前台参数中设置。");
                    return;
                }
            }

                   实时查询打印机状态,比如纸将尽,前盖已打开等。
                    Byte res = new Byte();
                    int ret = BeiYangOPOS.POS_NETQueryStatus(maskedTextBox1.Text.Trim(), out res);
                    StringBuilder sb = new StringBuilder();
                    if ((res & 0x10) == 0x10)
                        sb.AppendLine("打印机出错!");
                    if ((res & 0x02) == 0x02)
                        sb.AppendLine("打印机脱机!");
                    if ((res & 0x04) == 0x04)
                        sb.AppendLine("上盖打开!");
                    if ((res & 0x20) == 0x20)
                        sb.AppendLine("切刀出错!");
                    if ((res & 0x40) == 0x40)
                        sb.AppendLine("纸将尽!");
                    if ((res & 0x80) == 0x80)
                        sb.AppendLine("缺纸!");
                    if (sb.Length > 0)
                        MessageBox.Show(sb.ToString());

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  • 原文地址:https://www.cnblogs.com/robinli/p/2381806.html
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