C#自定义纸张问题

C#自定义纸张问 经常在软件中需要打印各种各样尺寸的报，在W2K系统中只能使用API来实现。 1、需要创建一种纸张 2、选定创建的纸张后设置纸张的尺寸 实现代码如下: using System; using System.Text; using System.Runtime; using System.Security; using System.Runtime.InteropServices; using System.Windows.Forms; namespace DBSoft.Report.ReportService { public class DBPaperSize { [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.Unic ode, ExactSpelling=false,CallingConvention=CallingConvention.StdCall),SuppressUnmanagedCodeSe curityAttribute()] 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.Unic ode, ExactSpelling=false,CallingConvention=CallingConvention.StdCall),SuppressUnmanagedCodeSe curityAttribute()] 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.Unicod e, ExactSpelling=false,CallingConvention=CallingConvention.StdCall),SuppressUnmanagedCodeSecur ityAttribute()] 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); public System.Drawing.Printing.PaperSize GetPrintForm(string printerName,string paperName) { System.Drawing.Printing.PaperSize paper=null; System.Drawing.Printing.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; } 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, GetLastE rror()); //throw new ApplicationException(strBuilder.ToString()); MessageBox.Show(strBuilder.ToString()); } } finally { ClosePrinter(hPrinter); } } } } public void AddCustomPaperSize(string printerName, string paperName, float width, float he ight) { 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, GetLastE rror()); 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, GetLa stError()); 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); } } } } }