c#获取打印机状态_网站开发杂文

c#获取打印机状态

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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;
}

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;
};

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