C# 如何用C打印PCL文件？

我有一个PCL文件，我使用“打印到文件”生成

用C语言编程打印此文件的最佳方式是什么

当然，我正在打印的打印机支持PCL

我知道我可以通过从提示符调用来打印：

copy filename.pcl //location/printername

所以我可以想象，我也可以使用copy以编程方式做同样的事情。。。我想知道是否有一种更干净的方法可以做到这一点，比如说使用PrintDocument

请注意，当我使用PrintDocument时：

var pd = new PrintDocument
         {
             DocumentName = @"filename.pcl";
             PrinterSettings = {PrinterName = @"\\location\printername"}
         };

pd.Print();

我总是会打印一个空白页。

，但我认为这很容易理解，可以将其应用到C语言中。否则，我很乐意帮助您解决任何有问题的部分

---

如果打印机在网络上。但是，如果您只是将PCL的字节发送到打印机，则不确定它是否也有效。

对于每个DLL导入，我们使用以下方法：

    [DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);

    [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool ClosePrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool StartDocPrinter(IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] RawPrinter di);

    [DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool EndDocPrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool StartPagePrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool EndPagePrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    public static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten);

---

我很抱歉这么晚才回答这个问题，但我有一些代码可以完成这项工作。原来不是我写的。我从另一个程序员的帮助站点收到了代码，但我不记得是哪一个。它工作得很好。下面是创建dll的项目。要自己完成，请选择“项目类型”下的“创建：/Project/Class Library选择Visual C”

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;

namespace PrintRaw
{
   public class RawFilePrint
   {
      // Structure and API declarions:
      [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
      public class DOCINFOA
      {
         [MarshalAs(UnmanagedType.LPStr)]
         public string pDocName;
         [MarshalAs(UnmanagedType.LPStr)]
         public string pOutputFile;
         [MarshalAs(UnmanagedType.LPStr)]
         public string pDataType;
      }
      [DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);

      [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool ClosePrinter(IntPtr hPrinter);

      [DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool StartDocPrinter(IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DOCINFOA di);

      [DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool EndDocPrinter(IntPtr hPrinter);

      [DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool StartPagePrinter(IntPtr hPrinter);

      [DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool EndPagePrinter(IntPtr hPrinter);

      [DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
      public static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten);

      // SendBytesToPrinter()
      // When the function is given a printer name and an unmanaged array
      // of bytes, the function sends those bytes to the print queue.
      // Returns true on success, false on failure.
      public static bool SendBytesToPrinter(string szPrinterName, IntPtr pBytes, Int32 dwCount)
      {
         Int32 dwError = 0, dwWritten = 0;
         IntPtr hPrinter = new IntPtr(0);
         DOCINFOA di = new DOCINFOA();
         bool bSuccess = false; // Assume failure unless you specifically succeed.

         di.pDocName = "RAW Document";
         di.pDataType = "RAW";

         if (OpenPrinter(szPrinterName.Normalize(), out hPrinter, IntPtr.Zero))
         {
            if (StartDocPrinter(hPrinter, 1, di))
            {
               if (StartPagePrinter(hPrinter))
               {
                  bSuccess = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);
                  EndPagePrinter(hPrinter);
               }
               EndDocPrinter(hPrinter);
            }
            ClosePrinter(hPrinter);
         }
         if (!bSuccess)
         {
            dwError = Marshal.GetLastWin32Error();
         }
         return bSuccess;
      }

      public static bool SendFileToPrinter(string szPrinterName, string szFileName)
      {
         FileStream fs = new FileStream(szFileName, FileMode.Open);
         BinaryReader br = new BinaryReader(fs);
         Byte[] bytes = new Byte[fs.Length];
         bool bSuccess = false;
         IntPtr pUnmanagedBytes = new IntPtr(0);
         int nLength;

         nLength = Convert.ToInt32(fs.Length);
         bytes = br.ReadBytes(nLength);
         pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
         Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
         bSuccess = SendBytesToPrinter(szPrinterName, pUnmanagedBytes, nLength);
         Marshal.FreeCoTaskMem(pUnmanagedBytes);
         return bSuccess;
      }

      public static bool SendStringToPrinter(string szPrinterName, string szString)
      {
         IntPtr pBytes;
         Int32 dwCount;
         dwCount = szString.Length;
         // Assume that the printer is expecting ANSI text, and then convert
         // the string to ANSI text.
         pBytes = Marshal.StringToCoTaskMemAnsi(szString);
         SendBytesToPrinter(szPrinterName, pBytes, dwCount);
         Marshal.FreeCoTaskMem(pBytes);
         return true;
      }
   }
}

现在，要使用此代码，请将生成的dll添加为对项目的引用，然后根据需要调用函数。以下是我今天使用的一些代码：

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace PclFontTest
{
    class Program
    {
        static void Main(string[] args)
        {

            string szPrinterName = @"\\printserver\LaserJet 2420";

            StreamReader sr = new StreamReader(@"C:\Fonts\US20HP.FNT");
            string line = (char)27 + "*c32545D";
            line += sr.ReadToEnd();
            line += (char)27 + "*c5F";

            PrintRaw.RawFilePrint.SendStringToPrinter(szPrinterName, line);


        }
    }
}

---

此程序从文件中读取PCL字体。它用代码包装字体，为其分配32545的字体id，然后调用dll函数SendStringToPrinter。

DocumentName是打印作业的显示名称。与磁盘上的文件名没有关系。哈哈，+1对于有趣的例子，我必须在工作中试用。我试图将完整的pcl文档发送到设置为打印到文件的laserjet 4驱动程序，文件上的状态只是显示错误-打印我相信问题在于您正在尝试打印到文件。上面的代码需要一个仅包含PCL代码的文件，并且您希望在不受windows干扰的情况下将其直接发送到打印机。换句话说，您似乎试图打印到一个已经打印到文件中的文件。很棒的代码@James Carr。我想问你一个问题。发送文件时，是否仍要格式化？e、 行距、页边距、分页符等