c# winform 打印机控制帮助类

最新推荐文章于 2025-06-13 11:20:50 发布
最新推荐文章于 2025-06-13 11:20:50 发布
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分类专栏： C# API 文章标签： c#打印控制类 c# printerHelper
本文介绍了一个使用 C# 实现的打印机状态监测工具，包括获取打印机列表、检查打印机是否在线、获取打印机详细状态等功能。通过调用 Windows API 和 WMI 查询，该工具能够准确地反映打印机的工作状况。

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//https://www.cnblogs.com/gordensong/p/3825462.html
    public class Printer
    {
        /// <summary>
        /// 获取打印机状态，是否离线。
        /// </summary>
        /// <param name="printerName"></param>
        /// <returns></returns>
        public static bool WorkOffline(string printerName)
        {
            string query = string.Format("SELECT * from Win32_Printer ");
            var searcher = new ManagementObjectSearcher(query);
            var printerzs = searcher.Get();
            foreach (var printer in printerzs)
            {
                string printername = printer.Properties["Name"].Value.ToString();
                if (printername == printerName)
                {
                    string workOffline = printer.Properties["WorkOffline"].Value.ToString().ToLower();
                    return workOffline != "false";
                }
            }
            return false;
        }

        private Printer()
        {
        }

        internal static int GetPrinterStatusInt(string PrinterName)
        {
            int intRet = 0;
            IntPtr hPrinter;
            structPrinterDefaults defaults = new structPrinterDefaults();
            if (OpenPrinter(PrinterName, out hPrinter, ref defaults))
            {
                int cbNeeded = 0;
                bool bolRet = GetPrinter(hPrinter, 2, IntPtr.Zero, 0, out cbNeeded);
                if (cbNeeded > 0)
                {
                    IntPtr pAddr = Marshal.AllocHGlobal((int)cbNeeded);
                    bolRet = GetPrinter(hPrinter, 2, pAddr, cbNeeded, out cbNeeded);
                    if (bolRet)
                    {
                        PRINTER_INFO_2 Info2 = new PRINTER_INFO_2();
                        Info2 = (PRINTER_INFO_2)Marshal.PtrToStructure(pAddr, typeof(PRINTER_INFO_2));
                        intRet = System.Convert.ToInt32(Info2.Status);
                    }
                    Marshal.FreeHGlobal(pAddr);
                }
                ClosePrinter(hPrinter);
            }

            return intRet;
        }

        internal static PRINTER_INFO_2[] EnumPrintersByFlag(PrinterEnumFlags Flags)
        {
            uint cbNeeded = 0;
            uint cReturned = 0;
            bool ret = EnumPrinters(PrinterEnumFlags.PRINTER_ENUM_LOCAL, null, 2, IntPtr.Zero, 0, ref cbNeeded, ref cReturned);

            IntPtr pAddr = Marshal.AllocHGlobal((int)cbNeeded);
            ret = EnumPrinters(PrinterEnumFlags.PRINTER_ENUM_LOCAL, null, 2, pAddr, cbNeeded, ref cbNeeded, ref cReturned);

            if (ret)
            {
                PRINTER_INFO_2[] Info2 = new PRINTER_INFO_2[cReturned];

                int offset = pAddr.ToInt32();

                for (int i = 0; i < cReturned; i++)
                {
                    Info2[i].pServerName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pPrinterName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pShareName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pPortName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pDriverName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pComment = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pLocation = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pDevMode = Marshal.ReadIntPtr(new IntPtr(offset));
                    offset += 4;
                    Info2[i].pSepFile = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pPrintProcessor = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pDatatype = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pParameters = Marshal.PtrToStringAuto(Marshal.ReadIntPtr(new IntPtr(offset)));
                    offset += 4;
                    Info2[i].pSecurityDescriptor = Marshal.ReadIntPtr(new IntPtr(offset));
                    offset += 4;
                    Info2[i].Attributes = (uint)Marshal.ReadIntPtr(new IntPtr(offset));
                    offset += 4;
                    Info2[i].Priority = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;
                    Info2[i].DefaultPriority = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;
                    Info2[i].StartTime = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;
                    Info2[i].UntilTime = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;
                    Info2[i].Status = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;
                    Info2[i].cJobs = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;
                    Info2[i].AveragePPM = (uint)Marshal.ReadInt32(new IntPtr(offset));
                    offset += 4;

                }

                Marshal.FreeHGlobal(pAddr);

                return Info2;
            }
            else
            {
                return new PRINTER_INFO_2[0];
            }
        }

        /// <summary> 
        /// 获取当前指定打印机的状态 
        /// </summary> 
        /// <param name="PrinterName">打印机名称</param> 
        /// <returns>打印机状态描述</returns> 
        public static string GetPrinterStatus(string PrinterName)
        {
            int intValue = GetPrinterStatusInt(PrinterName);
            string strRet = string.Empty;
            switch (intValue)
            {
                case 0:
                    strRet = "准备就绪（Ready）";
                    break;
                case 0x00000200:
                    strRet = "忙(Busy）";
                    break;
                case 0x00400000:
                    strRet = "门被打开（Printer Door Open）";
                    break;
                case 0x00000002:
                    strRet = "错误(Printer Error）";
                    break;
                case 0x0008000:
                    strRet = "正在初始化(Initializing）";
                    break;
                case 0x00000100:
                    strRet = "正在输入或输出（I/O Active）";
                    break;
                case 0x00000020:
                    strRet = "手工送纸（Manual Feed）";
                    break;
                case 0x00040000:
                    strRet = "无墨粉（No Toner）";
                    break;
                case 0x00001000:
                    strRet = "不可用（Not Available）";
                    break;
                case 0x00000080:
                    strRet = "脱机（Off Line）";
                    break;
                case 0x00200000:
                    strRet = "内存溢出（Out of Memory）";
                    break;
                case 0x00000800:
                    strRet = "输出口已满（Output Bin Full）";
                    break;
                case 0x00080000:
                    strRet = "当前页无法打印（Page Punt）";
                    break;
                case 0x00000008:
                    strRet = "塞纸（Paper Jam）";
                    break;
                case 0x00000010:
                    strRet = "打印纸用完（Paper Out）";
                    break;
                case 0x00000040:
                    strRet = "纸张问题（Page Problem）";
                    break;
                case 0x00000001:
                    strRet = "暂停（Paused）";
                    break;
                case 0x00000004:
                    strRet = "正在删除（Pending Deletion）";
                    break;
                case 0x00000400:
                    strRet = "正在打印（Printing）";
                    break;
                case 0x00004000:
                    strRet = "正在处理（Processing）";
                    break;
                case 0x00020000:
                    strRet = "墨粉不足（Toner Low）";
                    break;
                case 0x00100000:
                    strRet = "需要用户干预（User Intervention）";
                    break;
                case 0x20000000:
                    strRet = "等待（Waiting）";
                    break;
                case 0x00010000:
                    strRet = "正在准备（Warming Up）";
                    break;
                default:
                    strRet = "未知状态（Unknown Status）";
                    break;
            }
            return strRet;
        }

        /// <summary> 
        /// 获取本地打印机列表 
        /// 可以通过制定参数获取网络打印机 
        /// </summary> 
        /// <returns>打印机列表</returns> 
        public static List<string> GetPrinterList()
        {
            List<string> list = new List<string>();
            PRINTER_INFO_2[] Info2 = EnumPrintersByFlag(PrinterEnumFlags.PRINTER_ENUM_LOCAL);
            for (int i = 0; i < Info2.Length; i++)
            {
                list.Add(Info2[i].pPrinterName);
            }
            return list;
        }

        /// <summary>
        /// 获取安装的打印机
        /// </summary>
        /// <returns></returns>
        public static List<string> GetInstalledPrinters()
        {
            List<string> printers = new List<string>();
            foreach (object installedPrinter in PrinterSettings.InstalledPrinters)
            {
                string printer = installedPrinter.ToString();
                printers.Add(printer);
            }
            return printers;
        }

        /// <summary> 
        /// 获取本机的默认打印机名称 
        /// </summary> 
        /// <returns>默认打印机名称</returns> 
        public static string GetDeaultPrinterName()
        {
            StringBuilder dp = new StringBuilder(256);
            int size = dp.Capacity;
            if (GetDefaultPrinter(dp, ref size))
            {
                return dp.ToString();
            }
            else
            {
                int rc = GetLastError();
                return string.Empty;
            }
        }

        /// <summary> 
        /// 设置默认打印机 
        /// </summary> 
        /// <param name="PrinterName">可用的打印机名称</param> 
        public static void SetPrinterToDefault(string PrinterName)
        {
            SetDefaultPrinter(PrinterName);
        }

        ///// <summary> 
        ///// 判断打印机是否在系统可用的打印机列表中 
        ///// </summary> 
        ///// <param name="PrinterName">打印机名称</param> 
        ///// <returns>是：在；否：不在</returns> 
        public static bool PrinterInList(string PrinterName)
        {
            List<string> alPrinters = GetPrinterList();
            bool bolRet = alPrinters.Cast<object>().Any(t => PrinterName == t.ToString());
            alPrinters.Clear();
            return bolRet;
        }



        #region API声明

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        internal struct structPrinterDefaults
        {
            [MarshalAs(UnmanagedType.LPTStr)]
            public String pDatatype;
            public IntPtr pDevMode;
            [MarshalAs(UnmanagedType.I4)]
            public int DesiredAccess;
        };

        [DllImport("winspool.Drv", EntryPoint = "OpenPrinter", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPTStr)]string printerName, out IntPtr phPrinter, ref structPrinterDefaults pd);

        [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern bool ClosePrinter(IntPtr phPrinter);

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        internal struct structSize
        {
            public Int32 width;
            public Int32 height;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        internal struct structRect
        {
            public Int32 left;
            public Int32 top;
            public Int32 right;
            public Int32 bottom;
        }

        [StructLayout(LayoutKind.Explicit, CharSet = CharSet.Unicode)]
        internal struct FormInfo1
        {
            [FieldOffset(0), MarshalAs(UnmanagedType.I4)]
            public uint Flags;
            [FieldOffset(4), MarshalAs(UnmanagedType.LPWStr)]
            public String pName;
            [FieldOffset(8)]
            public structSize Size;
            [FieldOffset(16)]
            public structRect ImageableArea;
        };

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        internal struct structDevMode
        {
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
            public string dmDeviceName;
            [MarshalAs(UnmanagedType.U2)]
            public short dmSpecVersion;
            [MarshalAs(UnmanagedType.U2)]
            public short dmDriverVersion;
            [MarshalAs(UnmanagedType.U2)]
            public short dmSize;
            [MarshalAs(UnmanagedType.U2)]
            public short dmDriverExtra;
            [MarshalAs(UnmanagedType.U4)]
            public int dmFields;
            [MarshalAs(UnmanagedType.I2)]
            public short dmOrientation;
            [MarshalAs(UnmanagedType.I2)]
            public short dmPaperSize;
            [MarshalAs(UnmanagedType.I2)]
            public short dmPaperLength;
            [MarshalAs(UnmanagedType.I2)]
            public short dmPaperWidth;
            [MarshalAs(UnmanagedType.I2)]
            public short dmScale;
            [MarshalAs(UnmanagedType.I2)]
            public short dmCopies;
            [MarshalAs(UnmanagedType.I2)]
            public short dmDefaultSource;
            [MarshalAs(UnmanagedType.I2)]
            public short dmPrintQuality;
            [MarshalAs(UnmanagedType.I2)]
            public short dmColor;
            [MarshalAs(UnmanagedType.I2)]
            public short dmDuplex;
            [MarshalAs(UnmanagedType.I2)]
            public short dmYResolution;
            [MarshalAs(UnmanagedType.I2)]
            public short dmTTOption;
            [MarshalAs(UnmanagedType.I2)]
            public short dmCollate;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
            public String dmFormName;
            [MarshalAs(UnmanagedType.U2)]
            public short dmLogPixels;
            [MarshalAs(UnmanagedType.U4)]
            public int dmBitsPerPel;
            [MarshalAs(UnmanagedType.U4)]
            public int dmPelsWidth;
            [MarshalAs(UnmanagedType.U4)]
            public int dmPelsHeight;
            [MarshalAs(UnmanagedType.U4)]
            public int dmNup;
            [MarshalAs(UnmanagedType.U4)]
            public int dmDisplayFrequency;
            [MarshalAs(UnmanagedType.U4)]
            public int dmICMMethod;
            [MarshalAs(UnmanagedType.U4)]
            public int dmICMIntent;
            [MarshalAs(UnmanagedType.U4)]
            public int dmMediaType;
            [MarshalAs(UnmanagedType.U4)]
            public int dmDitherType;
            [MarshalAs(UnmanagedType.U4)]
            public int dmReserved1;
            [MarshalAs(UnmanagedType.U4)]
            public int dmReserved2;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        internal struct PRINTER_INFO_9
        {
            public IntPtr pDevMode;
        }

        [DllImport("winspool.Drv", EntryPoint = "AddFormW", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern bool AddForm(IntPtr phPrinter, [MarshalAs(UnmanagedType.I4)] int level, ref FormInfo1 form);

        [DllImport("winspool.Drv", EntryPoint = "DeleteForm", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern bool DeleteForm(IntPtr phPrinter, [MarshalAs(UnmanagedType.LPTStr)] string pName);

        [DllImport("kernel32.dll", EntryPoint = "GetLastError", SetLastError = false, ExactSpelling = true, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern Int32 GetLastError();

        [DllImport("GDI32.dll", EntryPoint = "CreateDC", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern IntPtr CreateDC([MarshalAs(UnmanagedType.LPTStr)]string pDrive, [MarshalAs(UnmanagedType.LPTStr)] string pName, [MarshalAs(UnmanagedType.LPTStr)] string pOutput, ref structDevMode pDevMode);

        [DllImport("GDI32.dll", EntryPoint = "ResetDC", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern IntPtr ResetDC(IntPtr hDC, ref structDevMode pDevMode);

        [DllImport("GDI32.dll", EntryPoint = "DeleteDC", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern bool DeleteDC(IntPtr hDC);

        [DllImport("winspool.Drv", EntryPoint = "SetPrinterA", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurity()]
        internal static extern bool SetPrinter(IntPtr hPrinter, [MarshalAs(UnmanagedType.I4)] int level, IntPtr pPrinter, [MarshalAs(UnmanagedType.I4)] int command);

        /* 
         LONG DocumentProperties( 
           HWND hWnd,               // handle to parent window  
           HANDLE hPrinter,         // handle to printer object 
           LPTSTR pDeviceName,      // device name 
           PDEVMODE pDevModeOutput, // modified device mode 
           PDEVMODE pDevModeInput,  // original device mode 
           DWORD fMode              // mode options 
           ); 
         */
        [DllImport("winspool.Drv", EntryPoint = "DocumentPropertiesA", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        internal static extern int DocumentProperties(IntPtr hwnd, IntPtr hPrinter, [MarshalAs(UnmanagedType.LPStr)] string pDeviceName, IntPtr pDevModeOutput, IntPtr pDevModeInput, int fMode);

        [DllImport("winspool.Drv", EntryPoint = "GetPrinterA", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        internal static extern bool GetPrinter(IntPtr hPrinter, int dwLevel, IntPtr pPrinter, int dwBuf, out int dwNeeded);

        [Flags]
        internal enum SendMessageTimeoutFlags : uint
        {
            SMTO_NORMAL = 0x0000,
            SMTO_BLOCK = 0x0001,
            SMTO_ABORTIFHUNG = 0x0002,
            SMTO_NOTIMEOUTIFNOTHUNG = 0x0008
        }
        const int WM_SETTINGCHANGE = 0x001A;
        const int HWND_BROADCAST = 0xffff;

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        internal static extern IntPtr SendMessageTimeout(IntPtr windowHandle, uint Msg, IntPtr wParam, IntPtr lParam, SendMessageTimeoutFlags flags, uint timeout, out IntPtr result);

        //EnumPrinters用到的函数和机构体 
        [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern bool EnumPrinters(PrinterEnumFlags Flags, string Name, uint Level, IntPtr pPrinterEnum, uint cbBuf, ref uint pcbNeeded, ref uint pcReturned);

        [StructLayout(LayoutKind.Sequential)]
        internal struct PRINTER_INFO_2
        {
            public string pServerName;
            public string pPrinterName;
            public string pShareName;
            public string pPortName;
            public string pDriverName;
            public string pComment;
            public string pLocation;
            public IntPtr pDevMode;
            public string pSepFile;
            public string pPrintProcessor;
            public string pDatatype;
            public string pParameters;
            public IntPtr pSecurityDescriptor;
            public uint Attributes;
            public uint Priority;
            public uint DefaultPriority;
            public uint StartTime;
            public uint UntilTime;
            public uint Status;
            public uint cJobs;
            public uint AveragePPM;
        }

        [Flags]
        internal enum PrinterEnumFlags
        {
            PRINTER_ENUM_DEFAULT = 0x00000001,
            PRINTER_ENUM_LOCAL = 0x00000002,
            PRINTER_ENUM_CONNECTIONS = 0x00000004,
            PRINTER_ENUM_FAVORITE = 0x00000004,
            PRINTER_ENUM_NAME = 0x00000008,
            PRINTER_ENUM_REMOTE = 0x00000010,
            PRINTER_ENUM_SHARED = 0x00000020,
            PRINTER_ENUM_NETWORK = 0x00000040,
            PRINTER_ENUM_EXPAND = 0x00004000,
            PRINTER_ENUM_CONTAINER = 0x00008000,
            PRINTER_ENUM_ICONMASK = 0x00ff0000,
            PRINTER_ENUM_ICON1 = 0x00010000,
            PRINTER_ENUM_ICON2 = 0x00020000,
            PRINTER_ENUM_ICON3 = 0x00040000,
            PRINTER_ENUM_ICON4 = 0x00080000,
            PRINTER_ENUM_ICON5 = 0x00100000,
            PRINTER_ENUM_ICON6 = 0x00200000,
            PRINTER_ENUM_ICON7 = 0x00400000,
            PRINTER_ENUM_ICON8 = 0x00800000,
            PRINTER_ENUM_HIDE = 0x01000000
        }

        //打印机状态 
        [Flags]
        internal enum PrinterStatus
        {
            PRINTER_STATUS_BUSY = 0x00000200,
            PRINTER_STATUS_DOOR_OPEN = 0x00400000,
            PRINTER_STATUS_ERROR = 0x00000002,
            PRINTER_STATUS_INITIALIZING = 0x00008000,
            PRINTER_STATUS_IO_ACTIVE = 0x00000100,
            PRINTER_STATUS_MANUAL_FEED = 0x00000020,
            PRINTER_STATUS_NO_TONER = 0x00040000,
            PRINTER_STATUS_NOT_AVAILABLE = 0x00001000,
            PRINTER_STATUS_OFFLINE = 0x00000080,
            PRINTER_STATUS_OUT_OF_MEMORY = 0x00200000,
            PRINTER_STATUS_OUTPUT_BIN_FULL = 0x00000800,
            PRINTER_STATUS_PAGE_PUNT = 0x00080000,
            PRINTER_STATUS_PAPER_JAM = 0x00000008,
            PRINTER_STATUS_PAPER_OUT = 0x00000010,
            PRINTER_STATUS_PAPER_PROBLEM = 0x00000040,
            PRINTER_STATUS_PAUSED = 0x00000001,
            PRINTER_STATUS_PENDING_DELETION = 0x00000004,
            PRINTER_STATUS_PRINTING = 0x00000400,
            PRINTER_STATUS_PROCESSING = 0x00004000,
            PRINTER_STATUS_TONER_LOW = 0x00020000,
            PRINTER_STATUS_USER_INTERVENTION = 0x00100000,
            PRINTER_STATUS_WAITING = 0x20000000,
            PRINTER_STATUS_WARMING_UP = 0x00010000
        }

        //GetDefaultPrinter用到的API函数说明 
        [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
        internal static extern bool GetDefaultPrinter(StringBuilder pszBuffer, ref int size);

        //SetDefaultPrinter用到的API函数声明 
        [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
        internal static extern bool SetDefaultPrinter(string Name);

        //EnumFormsA用到的函数声明，应该和EnumPrinters类似 
        [DllImport("winspool.drv", EntryPoint = "EnumForms")]
        internal static extern int EnumFormsA(IntPtr hPrinter, int Level, ref byte pForm, int cbBuf, ref int pcbNeeded, ref int pcReturned);

        #endregion

    }

 

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命名空间主要包括以下几个核心类：：这是打印任务的核心类，用于定义打印内容和处理打印事件。：在打印过程中，该类封装了有关打印页的信息，包括用于绘制定印页的图形对象。：提供标准的打印对话框，让用户选择打印机和打印选项。：用于设置页面的边距、纸张大小等属性。：包含与打印机设置相关的属性和方法，如打印机名称、打印分辨率等。Margins类代表了打印内容的边界，它可以设置打印内容与页面边缘之间的距离。合理配置边距可以避免打印内容被裁切或者与边缘靠得太近导致阅读困难。
C#打印文本日志帮助类LogHelper
奋斗的小杨i的博客
07-15 374
public static class LogHelper { public static void WriteLog(string msg) { string filePath = AppDomain.CurrentDomain.BaseDirectory + "log"; if (!Directory.Exists(filePath)) { Direct...
【拿来就能用】C#指定打印机打印的类
Hello, 80586!
07-18 3111
之前写过一个“C#WinForm程序中选择打印机打印”的文章，但在使用过程中，尤其是生成Word文档时，会感觉系统响应较慢。如果不需要留存打印文档的电子版，可以使用下面的类直接打印。相比之前的方法，这种方法更简单，可以绘制文字、线段、图片。 打印响应速度很快，比之前的方法更好用。
完整打印机信息操作类（C#）
08-08
C#操作打印机信息最详尽的类,包括获取默认打印机、打印机列表（托管）；设置默认打印机、自定义打印机详细结构体（非托管）；所有打印机相关信息详尽注释。尤其适合初识打印机信息者学习使用。
C#winform调用打印机.zip
08-17
本项目“C#winform调用打印机.zip”提供了一个解决方案，允许开发者轻松地与本地打印机进行交互，并且包含了获取打印机列表、打印Word文档以及在无打印机的情况下将文档转换为XPS文件的功能。 首先，我们来详细了解...
C#控制打印机直接打印，设置默认打印机
04-09
在C#编程环境中，控制打印机直接打印以及设置默认打印机是一项常见的任务，特别是在开发桌面应用程序时。C#提供了丰富的API和类库，使得开发者能够轻松地与操作系统交互，完成这些功能。下面将详细介绍如何使用C#来...
winform打印机控制程序记录
NJJML的博客
07-12 1012
准备一个 panel ，在里面放入 label ，将 label 的宽度设置为 1 或者 2 ，背景色改为黑色，就能得到一根直线，再放入几个 label 作为文本容器。将 printPreviewDialog 的 Document 属性设置为 刚刚添加的 printDocument。获得触摸屏发送到 MQTT 服务器的讯息，解析讯息为 JSON 格式。为 true 则将数据填充到表格，切换默认打印机，开始打印。有些回调函数不能直接访问控件的属性，这时就需要用到这个。如下图，以主题来区分机台。
c# winform客户端 模板打印实现方式1
08-27
在C# WinForm客户端开发中，模板打印是一种常见的需求，尤其在报表生成、发票打印等场景下。本文将深入探讨如何实现模板打印，并提供一种基于源码参考的实现模式。 首先，我们需要理解模板打印的基本概念。模板打印...
C# 打印日志工具类
12-05
C# 打印日志工具类 可自定义格式 路径 ，内容
C#实现打印机功能实例
01-28
实现C#打印机预览、设置、打印等功能！
c#获取打印机当前打印状态完整源码
05-08
公司业务需要，编写的可以获取当前打印机状态程序，例如缺纸，缺墨，暂停等，vs2103开发，首先获取本机所有打印机，然后指定特定打印机获取状态。
C#获取打印机状态
11-09
C# 获取打印机状态 有实例，可运行。（NET3.5） Snagit 11 状态：准备就绪（Ready） Send To OneNote 2013 状态：准备就绪（Ready） pdfFactory Pro @ SHGLF138.aspac.local 状态：准备就绪（Ready） pdfFactory Pro 状态：准备就绪（Ready） KONICA MINOLTA C554SeriesPCL 状态：脱机（Off Line） Fax 状态：准备就绪（Ready）
C# 获取打印机当前状态的方法
01-01
要获得打印机的状态,应该定义一个联合. 代码如下:enum PrinterStatus { 其他状态= 1, 未知, 空闲, 正在打印, 预热, 停止打印, 打印中, 离线}其中的”正在打印”和”打印中”是同一个意思,至于为什么会是这样,目前还不知道. 在程序中添加System.Management的引用:using System.Management; 然后编写获取打印机状态的函数如下: 代码如下:///   /// 获取打印机的当前状态  ///   /// 打印机设备名称  //
C#Winform 图标 ico png
01-15
在C# WinForm应用程序开发中，图标（Icon）是一个至关重要的元素，它不仅提升了软件的视觉效果，还帮助用户快速识别程序。本资源提供了一系列的图标素材，包括ico和png格式，适用于各种尺寸，如16*16、32*32等，满足...
C#的Windows打印控件（PageSetupDialog、PrintDialog、PrintDocument、PrintPreviewControl和PrintPreviewDialog）
wenchm的博客
12-02 5895
应用程序中提供了一组打印控件，包括和控件，开发程序时，开发人员可以直接使用这些控件控制打印的文本和数据格式。一、
C实现获取打印机状态：智能监控打印机状态的解决方案
gitblog_06731的博客
05-24 842
C#实现获取打印机状态：智能监控打印机状态的解决方案 去发现同类优质开源项目:https://gitcode.com/ 在现代办公场景中，打印机的状态监控变得尤为重要。本文将为您详细介绍一个开源项目——C#实现获取打印机状态，帮助您轻松掌握打印机的实时工作状态。 项目介绍 C#实现获取打印机状态是一个开源项目，旨在帮助开发者在C#环境下调用API，获取默认打印机的当前状态。通过这个项目，您可以实时...
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