C # obtain the printer status

Public static string GetPrinterStatus (string PrinterName) {int intValue = GetPrinterStatusInt (PrinterName); string strRet = string. empty; switch (intValue) {case 0: strRet = "Ready (Ready)"; break; case 0x00000200: strRet = "Busy (Busy)"; break; case 0x00400000: strRet = "Printer Door Open"; break; case 0x00000002: strRet = "Printer Error"; break; case 0x0008000: strRet = "initialization (Initializing)"; break; case 0x00000100: strRet = "input, output (I/O Active)"; break; case 0x00000020: strRet = "Manual Feed"; break; case 0x00040000: strRet = "No Toner (No Toner)"; break; case 0x00001000: strRet = "Not Available"; break; case 0x00000080: strRet = "offline (Off Line)"; break; case 0x00200000: strRet = "Out of Memory"; break; case 0x00000800: strRet = "Output port Full"; break; case 0x00080000: strRet = "Current Page cannot be printed (Page Punt)"; break; case 0x00000008: strRet = "Paper Jam"; break; case 0x00000010: strRet = "Paper Out"; break; case 0x00000040: strRet = "Page Problem"; break; case 0x00000001: strRet = "Paused"; break; case 0x00000004: strRet = "Pending Deletion"; break; case 0x00000400: strRet = "Printing"; break; case 0x00004000: strRet = "Processing"; break; case 0x00020000: strRet = "Toner Low"; break; case 0x00100000: strRet = "User Intervention required"; break; case 0x20000000: strRet = "Waiting"; break; case 0x00010000: strRet = "warm Up"; break; default: strRet = "Unknown Status (Unknown Status) "; break;} return strRet;} 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 {[financialas (UnmanagedType. LPTStr)] public String pDatatype; public IntPtr pDevMode; [financialas (UnmanagedType. i4)] public int DesiredAccess;}; Status enumeration [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, latency = 0x00040000, latency = 0x00001000, PRINTER_STATUS_OFFLINE = 0x00000080, latency = 0x00200000, latency = 0x00000800, PRINTER_STATUS_PAGE_PUNT = 0x00080000, PRINTER_STATUS_PAPER_JAM = 0x00000008, PRINTER_STATUS_PAPER_OUT = 0x00000010, latency = 0x00000040, PRINTER_STATUS_PAUSED = 0x00000001, latency = 0x00000004, PRINTER_STATUS_PRINTING = 0x00000400, PRINTER_STATUS_PROCESSING = 0x00004000, PRINTER_STATUS_TONER_LOW = 0x00020000, latency = 0x00100000, PRINTER_STATUS_WAITING = 0x20000000, PRINTER_STATUS_WARMING_UP = 0x00010000}