.NET Drawing.Printing中自定义PaperSize的问题

本文主要是介绍.NET Drawing.Printing中自定义PaperSize的问题，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

以前在做一个项目，需要很多报表，而且报表的格式各不相同，重点是这些格式都是需要自定义的。但是这就碰到一个比较棘手的问题了，用过.net的朋友应该知道，PaperSize的自定义用起来有点问题，反正设置来设置去都实现不了，后来没办法客户催的紧，而且公司也要赶进度，因为客户只需要在两台机子上安装这个报表系统，所以用了一个最笨的方法，在两台机子上先设好需要的报表格式，这样系统才可以顺利使用。其实我分析以后知道如果利用WINDOWS的API在系统中进行设定，应该可以解决这个问题，不过后来转去做其他项目就没时间再考虑如何实现的问题。后来一次在网上看到和我思路一样的一种解决方法，当时就保存下来了。具体的代码如下：
using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Security;
using System.ComponentModel;
using System.Drawing.Printing;

namespace MJMCustomPrintForm
{
    /// <summary>
    /// Summary description for MJMCustomPrintForm.
    /// </summary>
    public class MJMCustomPrintForm
    {
        // Make a static class
        private MJMCustomPrintForm()
        {
        }

        [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
         );

      public static void AddMjm80MmPaperSizeToDefaultPrinter()
      {
         AddCustomPaperSizeToDefaultPrinter("MJM 80mm * Receipt Length", 80.1f, 4003.9f);
      }

      public static void AddMjm104MmPaperSizeToDefaultPrinter()
      {
         AddCustomPaperSizeToDefaultPrinter("MJM 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,
                     MJMCustomPrintForm.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);
                }
            }
        }
    }
}