打印系统开发(39)——检查打印机状态

public class Printer
{/// <summary> /// 构造函数 /// </summary> /// <param name="name">打印机名称</param> public Printer(string name){this.printer_name = name;}// 设备名：EPSON R330 Series private string _printer_name;/// <summary> /// 打印机名称 /// </summary> public string printer_name{get{return _printer_name;}set{_printer_name = value;}}/// <summary> /// 获取打印机状态 /// </summary> /// <returns></returns> public int getStatus(){string path = @"win32_printer.DeviceId='" + this.printer_name + "'";ManagementObject printer = new ManagementObject(path);printer.Get();return Convert.ToInt32(printer.Properties["PrinterStatus"].Value);}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 = "被打开（Printer Door Open）";break;case 0x00000002:strRet = "错误(Printer Error）";break;case 0x0008000:strRet = "初始化(Initializing）";break;case 0x00000100:strRet = "正在输入,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 = "热机中（Warming Up）";break;default:strRet = "未知状态（Unknown Status）";break;}return strRet;}[DllImport("winspool.Drv", EntryPoint = "OpenPrinter", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall),SuppressUnmanagedCodeSecurityAttribute()]internal static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPTStr)] string printerName, out IntPtr phPrinter, ref structPrinterDefaults pd);[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);[DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]internal static extern bool ClosePrinter(IntPtr phPrinter);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;}[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]internal struct structPrinterDefaults{[MarshalAs(UnmanagedType.LPTStr)]public String pDatatype;public IntPtr pDevMode;[MarshalAs(UnmanagedType.I4)]public int DesiredAccess;};[FlagsAttribute]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}[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;}}

string statu=   Printer.GetPrinterStatus("打印机名称");

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打印系统开发(39)——检查打印机状态

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