Используйте функцию PrintSpoolerAPI SetForm() в C#
Я работаю над приложением Windows Forms, в котором я хочу распечатать пользовательский документ. Этот пользовательский документ имеет нестандартный размер, и я должен установить размер страницы печати по умолчанию, используя код C#.
Я сделал поиск в Google и наткнулся PrintSpoolerAPI, Код, который я нашел, добавит пользовательскую форму / страницу, используя AddForm() метод списка доступных страниц для печати. Я также хочу установить эту вновь добавленную страницу как страницу печати по умолчанию.
Я пытался написать эту строку в коде
bool x = SetForm(hPrinter, paperName, 1, ref formInfo);
Возвращает true значение, но не настройка печати по умолчанию.
Есть ли dmPaperSize играет какую-то роль в этом?
Вот полный код:
using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Security;
using System.ComponentModel;
using System.Drawing.Printing;
namespace WindowsFormsApplication1
{
public class CustomPrintForm
{
[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);
[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());
}
else
{
bool x = SetForm(hPrinter, paperName, 1, ref formInfo);
}
// 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, CustomPrintForm.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);
}
}
}
}
}
Нужна помощь в решении этого вопроса.
4 ответа
Решение
Ваш код почти безупречен (нуждается в работе в 64-битном режиме) и делает то, что намеревается сделать:
Однако на этом хорошие новости заканчиваются. Используемый API-интерфейс напрямую связывается с драйвером принтера, и он отвечает за то, чтобы ваши изменения DEVMODE вступили в силу. Это прекрасно работает для драйвера принтера XPS, но не подходит для многих других драйверов. Как и драйвер Hewlett Packard, который я тоже пробовал.
Все, что вы делаете, имеет сразу видимый побочный эффект в реестре. Вы можете увидеть это с Regedit.exe. Что является хорошим способом перепроверить ваш код. И чтобы увидеть это, нужно прекратить попытки, потому что драйвер принтера не будет взаимодействовать. Ключи, на которые вы хотите посмотреть:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Print \ Forms. Этот ключ перечисляет форму, которую вы добавляете. У вас не должно быть проблем с этим.
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Print \ Forms \ MJM 80 мм * Длина квитанции, значение "FormKeyword". Запишите это, это "ключевое слово", по которому принтер выбирает вашу форму.
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Print \ Printers \ printername, значение "DevMode по умолчанию". Это написано, когда вы вызываете SetPrinter(). Вы можете посмотреть на шестнадцатеричный дамп значения. FormKeyword, который вы записали на предыдущем шаге, виден со смещением 0x348
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Print \ Printers \ printername \ DsDriver, printMediaSupported value. Не совсем уверен в этом, но должен показать список размеров бумаги, и там должна быть видна ваша пользовательская форма.
Извините за плохие новости, принтеры отстой.
Для использования x64
[StructLayout(LayoutKind.Explicit, CharSet = CharSet.Unicode)]
internal struct FormInfo1
{
[FieldOffset(0), MarshalAs(UnmanagedType.I4)]
public uint Flags;
[FieldOffset(8), MarshalAs(UnmanagedType.LPWStr)]
public String pName;
[FieldOffset(16)]
public structSize Size;
[FieldOffset(24)]
public structRect ImageableArea;
};
Я просто использовал подобный код, чтобы добавить специальный размер бумаги в НАШ пользовательский драйвер принтера для Windows. Кажется, что иногда это не работает, но причина в файле драйвера принтера. Если в этом файле нет специального раздела CUSTOMIZE, принтер никогда не примет любой размер бумаги. Вы можете легко проверить, используя стандартную процедуру Windows, чтобы добавить пользовательскую бумагу на любой принтер.
*Option: CUSTOMSIZE
{
*rcNameID: =USER_DEFINED_SIZE_DISPLAY
*MinSize: PAIR(100, 100)
*MaxSize: PAIR(4026, 11340)
*TopMargin: 0
*BottomMargin: 0
*MaxPrintableWidth: 4026
*MinLeftMargin: 0
*CenterPrintable?: FALSE
*Command: CmdSelect
{
*Order: DOC_SETUP.10
*Cmd: ""
}
}
Благодаря коду Nilesh и информации о регистре Ханса мое требование - установить размер страницы по умолчанию для конкретного принтера с помощью программы C#, а затем открыть веб-браузер для печати определенной веб-страницы.
К настоящему времени я попытался добавить свою пользовательскую форму страницы и установить dmFormName с ней по умолчанию. Затем я снова получаю структуру devmode, dmFormName - это то, на что я изменился, но когда я открываю блокнот или другое приложение и пытаюсь что-то напечатать, я вижу, что размер страницы по умолчанию - это не то, что я установил.
Также я попытался удалить все неиспользуемые размеры страниц, чтобы по умолчанию был только один, но можно было удалить только тот, который был добавлен мной.
PS: я делаю рефакторинг кода следующим образом:
internal class PrinterPagaSize
{
public void DeleteAllPrintForm(string printerName)
{
structPrinterDefaults defaults = InitPrinterDefaults();
IntPtr hPrinter = IntPtr.Zero;
if (OpenPrinter(printerName, out hPrinter, ref defaults))
{
try
{
var printerSettings = PrinterSelector.DefaultPrinterSettings;
foreach (PaperSize ps in printerSettings.PaperSizes)
{
bool ret = DeleteForm(hPrinter, ps.PaperName);
Debug.WriteLine("delete ret:" + ret.ToString());
}
}
finally
{
ClosePrinter(hPrinter);
}
}
}
public PaperSize GetPrintForm(string printerName, string paperName)
{
PaperSize paper = null;
//var printer = new System.Drawing.Printing.PrinterSettings {PrinterName = printerName};
var printer = PrinterSelector.DefaultPrinterSettings;
foreach (PaperSize ps in printer.PaperSizes)
{
if (ps.PaperName.ToLower() == paperName.ToLower())
{
paper = ps;
break;
}
}
return paper;
}
/// <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 void AddCustomPaperSize(string printerName, string paperName, float
width, float height)
{
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
structPrinterDefaults defaults = InitPrinterDefaults();
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)(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(
"Failed to add the custom paper size {0} to the printer {1}, System error number: {2}",
paperName, printerName, GetLastError());
throw new ApplicationException(strBuilder.ToString());
}
else
{
SetForm(hPrinter, paperName, 1, ref formInfo);
}
SetPrinterDevMode(hPrinter, printerName, paperName);
}
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)(width * 1000.0);
pDevMode.dmPaperLength = (short)(height * 1000.0);
ResetDC(hDC, ref pDevMode);
DeleteDC(hDC);
}
}
}
const int DM_OUT_BUFFER = 2;
const int DM_IN_BUFFER = 8;
private void SetPrinterDevMode(IntPtr hPrinter, string printerName, string paperName)
{
// INIT
structDevMode devMode = new structDevMode();
PRINTER_INFO_9 printerInfo = new PRINTER_INFO_9();
printerInfo.pDevMode = IntPtr.Zero;
IntPtr hDevMode = GetDevMode(hPrinter, printerName, ref devMode);
// 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;
ChangeDevMode(hPrinter, printerName, paperName, devMode, hDevMode, ref printerInfo);
IntPtr hPrinterInfo = GetPrinterInfo(hPrinter);
// 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
bool bSuccess = SetPrinter(hPrinter, 9, hPrinterInfo, 0);
if (!bSuccess)
throw new Exception("Set printer failed!");
}
private static IntPtr GetPrinterInfo(IntPtr hPrinter)
{
IntPtr hPrinterInfo;
bool bSuccess = false;
int iPrinterInfoSize, iDummyInt;
// 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
bSuccess = GetPrinter(hPrinter, 9, hPrinterInfo, iPrinterInfoSize, out iDummyInt);
if (!bSuccess)
throw new ApplicationException(
"GetPrinter failed. Couldn't get the shared PRINTER_INFO_9 structure");
return hPrinterInfo;
}
private static void ChangeDevMode(IntPtr hPrinter, string printerName, string paperName, structDevMode devMode, IntPtr hDevMode, ref PRINTER_INFO_9 printerInfo)
{
// PUT THE DEV_MODE STRUCTURE BACK INTO THE POINTER
Marshal.StructureToPtr(devMode, hDevMode, true);
// MERGE THE NEW CHAGES WITH THE OLD
int 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.");
}
private static IntPtr GetDevMode(IntPtr hPrinter, string printerName, ref structDevMode devMode)
{
// 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());
return hDevMode;
}
private static structPrinterDefaults InitPrinterDefaults()
{
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;
return defaults;
}
#region Win API
[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 FormInfo1
{
[MarshalAs(UnmanagedType.I4)]
public int Flags;
[MarshalAs(UnmanagedType.LPTStr)]
public String pName;
public structSize Size;
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);
[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
}
private const int WM_SETTINGCHANGE = 0x001A;
private 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
);
#endregion
}