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);
}
}
}
}
}
不过具体在哪里找到的就不记得了。我自己其实还没试过。先记下来以后再用。
192
扫一扫
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
