打印自定义纸张大小

长江支流说的办法保留太多了,结果不行,很多类都是他在程序集里自定义的,源码又没公开

不过还是要感谢他的提示

今天和小陈搞了一天,他在国外的论坛上看到了一篇文章得到了启示,最后我们在凌晨3点终于把自定义纸张的代码给写出来了,看来必须用API,微软的.NET对打印的支持太菜了

现公开我们工作室实现此功能的部分代码

using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Security;
using System.ComponentModel;
using System.Drawing.Printing;

namespace MCCustomPrintForm
{
 /// <summary>
 /// 成都微创工作室（电子科技大学微创工作室）
 /// Tell 028-82853098
 /// Email zyspipi@163.com  , you680@gmail.com
 /// 打印机纸张的真正自定义部分代码
 /// 2006-1-2
 /// </summary>
 public class MCCustomPrintForm
 {
  // Make a static class
  private MCCustomPrintForm()
  {
  }
 
  [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
   internal struct structPrinterDefaults
  {
   [MarshalAs(UnmanagedType.LPTStr)] public String pDatatype;
   public IntPtr pDevMode;
   [MarshalAs(UnmanagedType.I4)] public int DesiredAccess;
  };

[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="ClosePrinter", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=false,
    CallingConvention=CallingConvention.StdCall),SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern bool ClosePrinter(IntPtr phPrinter);

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
   internal struct structSize
  {
   public Int32 width;
   public Int32 height;
  }

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
   internal struct structRect
  {
   public Int32 left;
   public Int32 top;
   public Int32 right;
   public Int32 bottom;
  }

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Unicode)]
   internal struct FormInfo1
  {
   [FieldOffset(0), MarshalAs(UnmanagedType.I4)] public uint Flags;
   [FieldOffset(4), MarshalAs(UnmanagedType.LPWStr)] public String pName;
   [FieldOffset(8)] public structSize Size;
   [FieldOffset(16)] public structRect ImageableArea;
  };

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi/* changed from CharSet=CharSet.Auto */)]
   internal struct structDevMode
  {
   [MarshalAs(UnmanagedType.ByValTStr, SizeConst=32)] public String
    dmDeviceName;
   [MarshalAs(UnmanagedType.U2)] public short dmSpecVersion;
   [MarshalAs(UnmanagedType.U2)] public short dmDriverVersion;
   [MarshalAs(UnmanagedType.U2)] public short dmSize;
   [MarshalAs(UnmanagedType.U2)] public short dmDriverExtra;
   [MarshalAs(UnmanagedType.U4)] public int dmFields;
   [MarshalAs(UnmanagedType.I2)] public short dmOrientation;
   [MarshalAs(UnmanagedType.I2)] public short dmPaperSize;
   [MarshalAs(UnmanagedType.I2)] public short dmPaperLength;
   [MarshalAs(UnmanagedType.I2)] public short dmPaperWidth;
   [MarshalAs(UnmanagedType.I2)] public short dmScale;
   [MarshalAs(UnmanagedType.I2)] public short dmCopies;
   [MarshalAs(UnmanagedType.I2)] public short dmDefaultSource;
   [MarshalAs(UnmanagedType.I2)] public short dmPrintQuality;
   [MarshalAs(UnmanagedType.I2)] public short dmColor;
   [MarshalAs(UnmanagedType.I2)] public short dmDuplex;
   [MarshalAs(UnmanagedType.I2)] public short dmYResolution;
   [MarshalAs(UnmanagedType.I2)] public short dmTTOption;
   [MarshalAs(UnmanagedType.I2)] public short dmCollate;
   [MarshalAs(UnmanagedType.ByValTStr, SizeConst=32)] public String dmFormName;
   [MarshalAs(UnmanagedType.U2)] public short dmLogPixels;
   [MarshalAs(UnmanagedType.U4)] public int dmBitsPerPel;
   [MarshalAs(UnmanagedType.U4)] public int dmPelsWidth;
   [MarshalAs(UnmanagedType.U4)] public int dmPelsHeight;
   [MarshalAs(UnmanagedType.U4)] public int dmNup;
   [MarshalAs(UnmanagedType.U4)] public int dmDisplayFrequency;
   [MarshalAs(UnmanagedType.U4)] public int dmICMMethod;
   [MarshalAs(UnmanagedType.U4)] public int dmICMIntent;
   [MarshalAs(UnmanagedType.U4)] public int dmMediaType;
   [MarshalAs(UnmanagedType.U4)] public int dmDitherType;
   [MarshalAs(UnmanagedType.U4)] public int dmReserved1;
   [MarshalAs(UnmanagedType.U4)] public int dmReserved2;
  }

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)] 
         internal struct PRINTER_INFO_9 
      {
         public IntPtr pDevMode;
      }

[DllImport("winspool.Drv", EntryPoint="AddFormW", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=true,
    CallingConvention=CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern bool AddForm(
         IntPtr phPrinter,
   [MarshalAs(UnmanagedType.I4)] int level, 
         ref FormInfo1 form);

/*    This method is not used
  [DllImport("winspool.Drv", EntryPoint="SetForm", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=false,
    CallingConvention=CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern bool SetForm(IntPtr phPrinter, string paperName,
   [MarshalAs(UnmanagedType.I4)] int level, ref FormInfo1 form);
*/
  [DllImport("winspool.Drv", EntryPoint="DeleteForm", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=false,CallingConvention=CallingConvention.StdCall),
  SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern bool DeleteForm(
         IntPtr phPrinter,
   [MarshalAs(UnmanagedType.LPTStr)] string pName);

[DllImport("kernel32.dll", EntryPoint="GetLastError", SetLastError=false,
    ExactSpelling=true, CallingConvention=CallingConvention.StdCall),
  SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern Int32 GetLastError();

[DllImport("GDI32.dll", EntryPoint="CreateDC", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=false,
    CallingConvention=CallingConvention.StdCall),
  SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern IntPtr CreateDC([MarshalAs(UnmanagedType.LPTStr)]
   string pDrive,
   [MarshalAs(UnmanagedType.LPTStr)] string pName,
   [MarshalAs(UnmanagedType.LPTStr)] string pOutput,
   ref structDevMode pDevMode);

[DllImport("GDI32.dll", EntryPoint="ResetDC", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=false,
    CallingConvention=CallingConvention.StdCall),
  SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern IntPtr ResetDC(
         IntPtr hDC, 
         ref structDevMode
   pDevMode);

[DllImport("GDI32.dll", EntryPoint="DeleteDC", SetLastError=true,
    CharSet=CharSet.Unicode, ExactSpelling=false,
    CallingConvention=CallingConvention.StdCall),
  SuppressUnmanagedCodeSecurityAttribute()]
  internal static extern bool DeleteDC(IntPtr hDC);

[DllImport("winspool.Drv", EntryPoint="SetPrinterA", SetLastError=true,
          CharSet=CharSet.Auto, ExactSpelling=true,
          CallingConvention=CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]
      internal static extern bool SetPrinter(
         IntPtr hPrinter,
         [MarshalAs(UnmanagedType.I4)] int level, 
         IntPtr pPrinter, 
         [MarshalAs(UnmanagedType.I4)] int command);

/*
       LONG DocumentProperties(
         HWND hWnd,               // handle to parent window 
         HANDLE hPrinter,         // handle to printer object
         LPTSTR pDeviceName,      // device name
         PDEVMODE pDevModeOutput, // modified device mode
         PDEVMODE pDevModeInput,  // original device mode
         DWORD fMode              // mode options
         );
       */
      [DllImport("winspool.Drv", EntryPoint="DocumentPropertiesA", SetLastError=true, 
      ExactSpelling=true, CallingConvention=CallingConvention.StdCall)] 
      public static extern int DocumentProperties(
         IntPtr hwnd, 
         IntPtr hPrinter,
         [MarshalAs(UnmanagedType.LPStr)] string pDeviceName /* changed from String to string */,
         IntPtr pDevModeOutput, 
         IntPtr pDevModeInput, 
         int fMode
         );

[DllImport("winspool.Drv", EntryPoint="GetPrinterA", SetLastError=true, 
      ExactSpelling=true, CallingConvention=CallingConvention.StdCall)] 
      public static extern bool GetPrinter(
         IntPtr hPrinter, 
         int dwLevel /* changed type from Int32 */,
         IntPtr pPrinter,
         int dwBuf /* chagned from Int32*/, 
         out int dwNeeded /* changed from Int32*/
         );

// SendMessageTimeout tools
      [Flags] public enum SendMessageTimeoutFlags : uint
      {
         SMTO_NORMAL         = 0x0000,
         SMTO_BLOCK          = 0x0001,
         SMTO_ABORTIFHUNG    = 0x0002,
         SMTO_NOTIMEOUTIFNOTHUNG = 0x0008
      }
      const int WM_SETTINGCHANGE = 0x001A;
      const int HWND_BROADCAST = 0xffff;

[DllImport("user32.dll", SetLastError=true, CharSet=CharSet.Auto)]
      public static extern IntPtr SendMessageTimeout(
         IntPtr windowHandle, 
         uint Msg, 
         IntPtr wParam, 
         IntPtr lParam, 
         SendMessageTimeoutFlags flags, 
         uint timeout, 
         out IntPtr result
         );
      //打印纸张长宽设置
      public static void AddMC80MmPaperSizeToDefaultPrinter()
      {
         AddCustomPaperSizeToDefaultPrinter("MC 80mm * Receipt Length", 80.1f, 4003.9f);
      }

public static void AddMC104MmPaperSizeToDefaultPrinter()
      {
         AddCustomPaperSizeToDefaultPrinter("MC 104mm * Receipt Length", 104.1f, 4003.9f);
      }

/// <summary>
      /// Adds the printer form to the default printer
      /// </summary>
      /// <param name="paperName">Name of the printer form</param>
      /// <param name="widthMm">Width given in millimeters</param>
      /// <param name="heightMm">Height given in millimeters</param>
      public static void AddCustomPaperSizeToDefaultPrinter(string paperName, float widthMm, float heightMm)
      {
         PrintDocument pd = new PrintDocument();
         string sPrinterName = pd.PrinterSettings.PrinterName;
         AddCustomPaperSize(sPrinterName, paperName, widthMm, heightMm);
      }

/// <summary>
      /// Add the printer form to a printer 
      /// </summary>
      /// <param name="printerName">The printer name</param>
      /// <param name="paperName">Name of the printer form</param>
      /// <param name="widthMm">Width given in millimeters</param>
      /// <param name="heightMm">Height given in millimeters</param>
  public static void AddCustomPaperSize(string printerName, string paperName, float
   widthMm, float heightMm)
  {
   if (PlatformID.Win32NT == Environment.OSVersion.Platform)
   {
    // The code to add a custom paper size is different for Windows NT then it is
    // for previous versions of windows

const int PRINTER_ACCESS_USE = 0x00000008;
    const int PRINTER_ACCESS_ADMINISTER = 0x00000004;
    const int FORM_PRINTER =   0x00000002;
   
    structPrinterDefaults defaults = new structPrinterDefaults();
    defaults.pDatatype = null;
    defaults.pDevMode = IntPtr.Zero;
    defaults.DesiredAccess = PRINTER_ACCESS_ADMINISTER | PRINTER_ACCESS_USE;

IntPtr hPrinter = IntPtr.Zero;

// Open the printer.
    if (OpenPrinter(printerName, out hPrinter, ref defaults))
    {
     try
     {
                  // delete the form incase it already exists
      DeleteForm(hPrinter, paperName);
                  // create and initialize the FORM_INFO_1 structure
      FormInfo1 formInfo = new FormInfo1();
      formInfo.Flags = 0;
      formInfo.pName = paperName;
                  // all sizes in 1000ths of millimeters
      formInfo.Size.width = (int)(widthMm * 1000.0); 
      formInfo.Size.height = (int)(heightMm * 1000.0);
      formInfo.ImageableArea.left = 0;
      formInfo.ImageableArea.right = formInfo.Size.width;
      formInfo.ImageableArea.top = 0;
      formInfo.ImageableArea.bottom = formInfo.Size.height;
      if (!AddForm(hPrinter, 1, ref formInfo))
      {
       StringBuilder strBuilder = new StringBuilder();
       strBuilder.AppendFormat("Failed to add the custom paper size {0} to the printer {1}, System error number: {2}",
        paperName, printerName, GetLastError());
       throw new ApplicationException(strBuilder.ToString());
      }

// INIT
                  const int DM_OUT_BUFFER = 2;
                  const int DM_IN_BUFFER = 8;
                  structDevMode devMode = new structDevMode();
                  IntPtr hPrinterInfo, hDummy;
                  PRINTER_INFO_9 printerInfo;
                  printerInfo.pDevMode = IntPtr.Zero;
                  int iPrinterInfoSize, iDummyInt;

                  // GET THE SIZE OF THE DEV_MODE BUFFER
                  int iDevModeSize = DocumentProperties(IntPtr.Zero, hPrinter, printerName, IntPtr.Zero, IntPtr.Zero, 0);

if(iDevModeSize < 0)
                     throw new ApplicationException("Cannot get the size of the DEVMODE structure.");

// ALLOCATE THE BUFFER
                  IntPtr hDevMode = Marshal.AllocCoTaskMem(iDevModeSize + 100);

// GET A POINTER TO THE DEV_MODE BUFFER 
                  int iRet = DocumentProperties(IntPtr.Zero, hPrinter, printerName, hDevMode, IntPtr.Zero, DM_OUT_BUFFER);

if(iRet < 0)
                     throw new ApplicationException("Cannot get the DEVMODE structure.");

// FILL THE DEV_MODE STRUCTURE
                  devMode = (structDevMode)Marshal.PtrToStructure(hDevMode, devMode.GetType());

// SET THE FORM NAME FIELDS TO INDICATE THAT THIS FIELD WILL BE MODIFIED
                  devMode.dmFields = 0x10000; // DM_FORMNAME 
                  // SET THE FORM NAME
                  devMode.dmFormName = paperName;

// PUT THE DEV_MODE STRUCTURE BACK INTO THE POINTER
                  Marshal.StructureToPtr(devMode, hDevMode, true);

// MERGE THE NEW CHAGES WITH THE OLD
                  iRet = DocumentProperties(IntPtr.Zero, hPrinter, printerName, 
                           printerInfo.pDevMode, printerInfo.pDevMode, DM_IN_BUFFER | DM_OUT_BUFFER);

if(iRet < 0)
                     throw new ApplicationException("Unable to set the orientation setting for this printer.");

// GET THE PRINTER INFO SIZE
                  GetPrinter(hPrinter, 9, IntPtr.Zero, 0, out iPrinterInfoSize);
                  if(iPrinterInfoSize == 0)
                     throw new ApplicationException("GetPrinter failed. Couldn't get the # bytes needed for shared PRINTER_INFO_9 structure");

// ALLOCATE THE BUFFER
                  hPrinterInfo = Marshal.AllocCoTaskMem(iPrinterInfoSize + 100);

// GET A POINTER TO THE PRINTER INFO BUFFER
                  bool bSuccess = GetPrinter(hPrinter, 9, hPrinterInfo, iPrinterInfoSize, out iDummyInt);

if(!bSuccess)
                     throw new ApplicationException("GetPrinter failed. Couldn't get the shared PRINTER_INFO_9 structure");

// FILL THE PRINTER INFO STRUCTURE
                  printerInfo = (PRINTER_INFO_9)Marshal.PtrToStructure(hPrinterInfo, printerInfo.GetType());
                  printerInfo.pDevMode = hDevMode;

// GET A POINTER TO THE PRINTER INFO STRUCTURE
                  Marshal.StructureToPtr(printerInfo, hPrinterInfo, true);

// SET THE PRINTER SETTINGS
                  bSuccess = SetPrinter(hPrinter, 9, hPrinterInfo, 0);

if(!bSuccess)
                     throw new Win32Exception(Marshal.GetLastWin32Error(), "SetPrinter() failed.  Couldn't set the printer settings");

// Tell all open programs that this change occurred.
                  SendMessageTimeout(
                     new IntPtr(HWND_BROADCAST), 
                     WM_SETTINGCHANGE, 
                     IntPtr.Zero, 
                     IntPtr.Zero, 
                     MCCustomPrintForm.SendMessageTimeoutFlags.SMTO_NORMAL, 
                     1000, 
                     out hDummy);
     }
     finally
     {
      ClosePrinter(hPrinter);
     }
    }
    else
    {
     StringBuilder strBuilder = new StringBuilder();
     strBuilder.AppendFormat("Failed to open the {0} printer, System error number: {1}",
      printerName, GetLastError());
     throw new ApplicationException(strBuilder.ToString());
    }
   }
   else
   {
    structDevMode pDevMode = new structDevMode();
    IntPtr hDC = CreateDC(null, printerName, null, ref pDevMode);
    if (hDC != IntPtr.Zero)
    {
     const long DM_PAPERSIZE = 0x00000002L;
     const long DM_PAPERLENGTH = 0x00000004L;
     const long DM_PAPERWIDTH = 0x00000008L;
     pDevMode.dmFields = (int)(DM_PAPERSIZE | DM_PAPERWIDTH | DM_PAPERLENGTH);
     pDevMode.dmPaperSize = 256;
     pDevMode.dmPaperWidth = (short)(widthMm * 1000.0);
     pDevMode.dmPaperLength = (short)(heightMm * 1000.0);
     ResetDC(hDC, ref pDevMode);
     DeleteDC(hDC);
    }
   }
  }
 }
}