c#自定义打印机纸张类型和尺寸

using System;using System.Collections.Generic;using System.Text;using System.Security;using System.Runtime.InteropServices;using System.Windows.Forms;using System.Drawing.Printing;namespace PrinterPageSize{    ///    /// 自定义打印纸类型和尺寸    ///    class MyPageSize    {            //调用方法            //float width = 2100;            //float height = 1600;            //PrintDocument printDocument1 = new PrintDocument();            //MyPageSize ps = new MyPageSize();            //string defaultPrinterName = printDocument1.PrinterSettings.PrinterName; //默认打印机名称            //string myPageSizeName = "MyCustomePageSize";            //ps.SetPrintForm(defaultPrinterName, myPageSizeName, width, height);            //PaperSize ps1 = ps.GetPrintForm(defaultPrinterName, myPageSizeName);            //printDocument1.DefaultPageSettings.PaperSize = ps1;        ///        /// 获取打印纸类型        ///        /// 打印机名称        /// 纸张类型名称        /// 纸张类型        public PaperSize GetPrintForm(string printerName, string paperName)        {            PaperSize paper = null;            PrinterSettings printer = new System.Drawing.Printing.PrinterSettings();            printer.PrinterName = printerName;            foreach (System.Drawing.Printing.PaperSize ps in printer.PaperSizes)            {                if (ps.PaperName.ToLower() == paperName.ToLower())                {                    paper = ps;                    break;                }            }            return paper;        }        ///        /// 设置打印纸类型的尺寸，如果没有参数提供的类型则新建一个类型，        ///        /// 打印机名称        /// 打印纸类型名称        /// 宽度，单位0.1毫米，需要在打印机允许的尺寸之内，否则按照默认打印纸类型打印        /// 高度，单位0.1毫米，需要在打印机允许的尺寸之内，否则按照默认打印纸类型打印        public void SetPrintForm(string printerName, string paperName, float width, float height)        {            if (PlatformID.Win32NT == Environment.OSVersion.Platform)            {                const int PRINTER_ACCESS_USE = 0x00000008;                const int PRINTER_ACCESS_ADMINISTER = 0x00000004;                structPrinterDefaults defaults = new structPrinterDefaults();                defaults.pDatatype = null;                defaults.pDevMode = IntPtr.Zero;                defaults.DesiredAccess = PRINTER_ACCESS_ADMINISTER | PRINTER_ACCESS_USE;                IntPtr hPrinter = IntPtr.Zero;                if (OpenPrinter(printerName, out hPrinter, ref defaults))                {                    try                    {                        structFormInfo1 formInfo = new structFormInfo1();                        formInfo.Flags = 0;                        formInfo.pName = paperName;                        formInfo.Size.width = (int)(width * 100.0);                        formInfo.Size.height = (int)(height * 100.0);                        formInfo.ImageableArea.left = 0;                        formInfo.ImageableArea.right = formInfo.Size.width;                        formInfo.ImageableArea.top = 0;                        formInfo.ImageableArea.bottom = formInfo.Size.height;                        bool rslt = false;                        if (GetPrintForm(printerName, paperName) != null)                        {                            rslt = SetForm(hPrinter, paperName, 1, ref formInfo);                        }                        else                        {                            this.AddCustomPaperSize(printerName, paperName, width, height);                            rslt = true;                        }                        if (!rslt)                        {                            StringBuilder strBuilder = new StringBuilder();                            strBuilder.AppendFormat("添加纸张{0}时发生错误!, 系统错误号: {1}", paperName, GetLastError());                            //throw new ApplicationException(strBuilder.ToString());                            MessageBox.Show(strBuilder.ToString());                        }                    }                    finally                    {                        ClosePrinter(hPrinter);                    }                }            }        }        ///        /// 增加打印纸类型        ///        /// 打印机名称        /// 打印纸类型名称        /// 宽度，单位0.1毫米，需要在打印机允许的尺寸之内，否则按照默认打印纸类型打印        /// 高度，单位0.1毫米，需要在打印机允许的尺寸之内，否则按照默认打印纸类型打印        public void AddCustomPaperSize(string printerName, string paperName, float width, float height)        {            if (PlatformID.Win32NT == Environment.OSVersion.Platform)            {                const int PRINTER_ACCESS_USE = 0x00000008;                const int PRINTER_ACCESS_ADMINISTER = 0x00000004;                structPrinterDefaults defaults = new structPrinterDefaults();                defaults.pDatatype = null;                defaults.pDevMode = IntPtr.Zero;                defaults.DesiredAccess = PRINTER_ACCESS_ADMINISTER | PRINTER_ACCESS_USE;                IntPtr hPrinter = IntPtr.Zero;                if (OpenPrinter(printerName, out hPrinter, ref defaults))                {                    try                    {                        DeleteForm(hPrinter, paperName);                        structFormInfo1 formInfo = new structFormInfo1();                        formInfo.Flags = 0;                        formInfo.pName = paperName;                        formInfo.Size.width = (int)(width * 100.0);                        formInfo.Size.height = (int)(height * 100.0);                        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("添加纸张{0}时发生错误!, 系统错误号: {1}", paperName, GetLastError());                            throw new ApplicationException(strBuilder.ToString());                        }                    }                    finally                    {                        ClosePrinter(hPrinter);                    }                }                else                {                    StringBuilder strBuilder = new StringBuilder();                    strBuilder.AppendFormat("打开打印机{0} 时出现异常!, 系统错误号: {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)(width * 2.54 * 10000.0);                    pDevMode.dmPaperLength = (short)(height * 2.54 * 10000.0);                    ResetDC(hDC, ref pDevMode);                    DeleteDC(hDC);                }            }        }        [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.Sequential, CharSet = CharSet.Auto)]        internal struct structFormInfo1        {            [MarshalAs(UnmanagedType.I4)]            public int Flags;            [MarshalAs(UnmanagedType.LPTStr)]            public String pName;            public structSize Size;            public structRect ImageableArea;        };        [StructLayout(LayoutKind.Sequential, 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;        }        [DllImport("winspool.Drv", EntryPoint = "AddForm", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]        internal static extern bool AddForm(IntPtr phPrinter, [MarshalAs(UnmanagedType.I4)] int level, ref structFormInfo1 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("winspool.Drv", EntryPoint = "SetForm", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]        internal static extern bool SetForm(IntPtr phPrinter, [MarshalAs(UnmanagedType.LPTStr)] string pName, [MarshalAs(UnmanagedType.I4)] int level, ref structFormInfo1 form);        [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);    }}