class CSCPrintClass
{
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", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool OpenPrinter(string printer, out IntPtr handle, ref structPrinterDefaults pDefault);
[DllImport("winspool.drv")]
public static extern bool ClosePrinter(IntPtr handle);
[DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool GetPrinter(IntPtr handle, Int32 level, IntPtr buffer, Int32 size, out Int32 sizeNeeded);
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;
};
//状态枚举
[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
}
public 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 UInt32 Attributes;
public UInt32 Priority;
public UInt32 DefaultPriority;
public UInt32 StartTime;
public UInt32 UntilTime;
public UInt32 Status;
public UInt32 cJobs;
public UInt32 AveragePPM;
}
public static void Main()
{
Console.WriteLine(CSCPrintClass.GetPrinterStatus("EPSON LQ-680K II ESC/P2").ToString());
Console.ReadLine();
}
}
我现在遇到的问题是：
1，我打印机没有连接，调用OpenPrinter函数返回的也是true；
2，GetPrinter函数返回的一直是0（准备就绪（Ready））；
请各位能帮我解决，谢谢！！！
