/// <summary>
/// Method Name : GetPrinterDuplex
/// Programmatically get the Duplex flag for the specified printer
/// driver's default properties.
/// </summary>
/// <param name="sPrinterName"> The name of the printer to be used. </param>
/// <param name="errorMessage"> this will contain error messsage if any. </param>
/// <returns>
/// nDuplexSetting - One of the following standard settings:
/// 0 = Error
/// 1 = None (Simplex)
/// 2 = Duplex on long edge (book)
/// 3 = Duplex on short edge (legal)
/// </returns>
/// <remarks>
/// </remarks>
public short GetPrinterDuplex(string sPrinterName, out string errorMessage)
{
errorMessage = string.Empty;
short functionReturnValue = 0;
IntPtr hPrinter = default(IntPtr);
PRINTER_DEFAULTS pd = default(PRINTER_DEFAULTS);
DEVMODE dm = new DEVMODE();
int nRet = 0;
pd.DesiredAccess = PRINTER_ACCESS_USE;
nRet = OpenPrinter(sPrinterName, out hPrinter, ref pd);
if ((nRet == 0) | (hPrinter.ToInt32() == 0))
{
if (GetLastError() == 5)
{
errorMessage = "Access denied -- See the article for more info.";
}
else
{
errorMessage = "Cannot open the printer specified " + "(make sure the printer name is correct).";
}
return(functionReturnValue);
}
nRet = DocumentProperties(IntPtr.Zero, hPrinter, sPrinterName, IntPtr.Zero, IntPtr.Zero, 0);
if ((nRet < 0))
{
errorMessage = "Cannot get the size of the DEVMODE structure.";
goto cleanup;
}
IntPtr iparg = Marshal.AllocCoTaskMem(nRet + 100);
nRet = DocumentProperties(IntPtr.Zero, hPrinter, sPrinterName, iparg, IntPtr.Zero, DM_OUT_BUFFER);
if ((nRet < 0))
{
errorMessage = "Cannot get the DEVMODE structure.";
goto cleanup;
}
dm = (DEVMODE)Marshal.PtrToStructure(iparg, dm.GetType());
if (!Convert.ToBoolean(dm.dmFields & DM_DUPLEX))
{
errorMessage = "You cannot modify the duplex flag for this printer " + "because it does not support duplex or the driver " + "does not support setting it from the Windows API.";
goto cleanup;
}
functionReturnValue = dm.dmDuplex;
cleanup:
if ((hPrinter.ToInt32() != 0))
{
ClosePrinter(hPrinter);
}
return(functionReturnValue);
}
/// <summary>
/// Method Name : SetPrinterDuplex
/// Programmatically set the Duplex flag for the specified printer driver's default properties.
/// </summary>
/// <param name="sPrinterName"> sPrinterName - The name of the printer to be used. </param>
/// <param name="nDuplexSetting">
/// nDuplexSetting - One of the following standard settings:
/// 1 = None
/// 2 = Duplex on long edge (book)
/// 3 = Duplex on short edge (legal)
/// </param>
/// <param name="errorMessage"> this will contain error messsage if any. </param>
/// <returns>
/// Returns: True on success, False on error.
/// </returns>
/// <remarks>
///
/// </remarks>
public bool SetPrinterDuplex(string sPrinterName, int nDuplexSetting, out string errorMessage)
{
errorMessage = string.Empty;
bool functionReturnValue = false;
IntPtr hPrinter = default(IntPtr);
PRINTER_DEFAULTS pd = default(PRINTER_DEFAULTS);
PRINTER_INFO_9 pinfo = new PRINTER_INFO_9();
DEVMODE dm = new DEVMODE();
IntPtr ptrPrinterInfo = default(IntPtr);
int nBytesNeeded = 0;
int nRet = 0;
Int32 nJunk = default(Int32);
if ((nDuplexSetting < 1) | (nDuplexSetting > 3))
{
errorMessage = "Error: dwDuplexSetting is incorrect.";
return(functionReturnValue);
}
pd.DesiredAccess = PRINTER_ACCESS_USE;
nRet = OpenPrinter(sPrinterName, out hPrinter, ref pd);
if ((nRet == 0) | (hPrinter.ToInt32() == 0))
{
if (GetLastError() == 5)
{
errorMessage = "Access denied -- See the article for more info.";
}
else
{
errorMessage = "Cannot open the printer specified " + "(make sure the printer name is correct).";
}
return(functionReturnValue);
}
nRet = DocumentProperties(IntPtr.Zero, hPrinter, sPrinterName, IntPtr.Zero, IntPtr.Zero, 0);
if ((nRet < 0))
{
errorMessage = "Cannot get the size of the DEVMODE structure.";
goto cleanup;
}
IntPtr iparg = Marshal.AllocCoTaskMem(nRet + 100);
nRet = DocumentProperties(IntPtr.Zero, hPrinter, sPrinterName, iparg, IntPtr.Zero, DM_OUT_BUFFER);
if ((nRet < 0))
{
errorMessage = "Cannot get the DEVMODE structure.";
goto cleanup;
}
dm = (DEVMODE)Marshal.PtrToStructure(iparg, dm.GetType());
if (!Convert.ToBoolean(dm.dmFields & DM_DUPLEX))
{
errorMessage = "You cannot modify the duplex flag for this printer " + "because it does not support duplex or the driver " + "does not support setting it from the Windows API.";
goto cleanup;
}
dm.dmDuplex = (short)nDuplexSetting;
Marshal.StructureToPtr(dm, iparg, true);
nRet = DocumentProperties(IntPtr.Zero, hPrinter, sPrinterName, pinfo.pDevMode, pinfo.pDevMode, DM_IN_BUFFER | DM_OUT_BUFFER);
if ((nRet < 0))
{
errorMessage = "Unable to set duplex setting to this printer.";
goto cleanup;
}
GetPrinter(hPrinter, 9, IntPtr.Zero, 0, ref nBytesNeeded);
if ((nBytesNeeded == 0))
{
errorMessage = "GetPrinter failed.";
goto cleanup;
}
ptrPrinterInfo = Marshal.AllocCoTaskMem(nBytesNeeded + 100);
nRet = GetPrinter(hPrinter, 9, ptrPrinterInfo, nBytesNeeded, ref nJunk) ? 1 : 0;
if ((nRet == 0))
{
errorMessage = "Unable to get shared printer settings.";
goto cleanup;
}
pinfo = (PRINTER_INFO_9)Marshal.PtrToStructure(ptrPrinterInfo, pinfo.GetType());
pinfo.pDevMode = iparg;
pinfo.pSecurityDescriptor = 0;
Marshal.StructureToPtr(pinfo, ptrPrinterInfo, true);
nRet = SetPrinter(hPrinter, 9, ptrPrinterInfo, 0) ? 1 : 0;
if ((nRet == 0))
{
errorMessage = "Unable to set shared printer settings.";
}
functionReturnValue = Convert.ToBoolean(nRet);
cleanup:
if ((hPrinter.ToInt32() != 0))
{
ClosePrinter(hPrinter);
}
return(functionReturnValue);
}
/// <summary>
/// 改变打印机的设置
/// 张刊
/// 2016年8月18日
/// [email protected]
/// </summary>
/// <param name="PrinterName">打印机名称，如果为空则使用默认打印机</param>
/// <param name="PS">需要改变的信息</param>
/// <returns>是否改变成功</returns>
public static void ModifyPrintInfo2(string PrinterName, ref PrinterData PS)
{
PRINTER_INFO_9 printerInfo;
printerInfo.pDevMode = IntPtr.Zero;
if (PrinterName == string.Empty || PrinterName == null)
{
PrinterName = GetDeaultPrinterName();
}
pd.pDatatype = 0;
pd.pDevMode = 0;
pd.DesiredAccess = PRINTER_ALL_ACCESS;
if (OpenPrinter(PrinterName, out hPrinter, ref pd))
{
try
{
//得到结构体DEVMODE的大小
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.");
}
//分配指向结构体DEVMODE的内存缓冲区
IntPtr hDevMode = Marshal.AllocCoTaskMem(iDevModeSize + 100);
//得到一个指向DEVMODE内存缓存的指针
nRet = DocumentProperties(IntPtr.Zero, hPrinter, PrinterName, hDevMode, IntPtr.Zero, DM_OUT_BUFFER);
if (nRet < 0)
{
throw new ApplicationException("Cannot get the size of the DEVMODE structure.");
}
//給dm賦值
dm = (DEVMODE)Marshal.PtrToStructure(hDevMode, dm.GetType());
if ((((int)PS.Duplex < 0) || ((int)PS.Duplex > 3)))
{
throw new ArgumentOutOfRangeException("nDuplexSetting", "nDuplexSetting is incorrect.");
}
else
{
//更改printersetting
if ((int)PS.Size != 0)
{
dm.dmPaperSize = (short)PS.Size;
dm.dmFields |= DM_PAPERSIZE;
}
if (PS.pWidth != 0)
{
dm.dmPaperWidth = (short)PS.pWidth;
dm.dmFields |= DM_PAPERWIDTH;
}
if (PS.pLength != 0)
{
dm.dmPaperLength = (short)PS.pLength;
dm.dmFields |= DM_PAPERLENGTH;
}
if (PS.pFormName != null && PS.pFormName != string.Empty)
{
dm.dmFormName = PS.pFormName;
dm.dmFields |= DM_FORMNAME;
}
if ((int)PS.Orientation != 0)
{
dm.dmOrientation = (short)PS.Orientation;
dm.dmFields |= DM_ORIENTATION;
}
Marshal.StructureToPtr(dm, hDevMode, true);
// pinfo.pDevMode = hDevMode;
// pinfo.pSecurityDescriptor = IntPtr.Zero;
// /*update driver dependent part of the DEVMODE
// 1 = DocumentProperties(IntPtr.Zero, hPrinter, sPrinterName, yDevModeData, ref pinfo.pDevMode, (DM_IN_BUFFER | DM_OUT_BUFFER));*/
// Marshal.StructureToPtr(pinfo,ptrPrinterInfo,true);
//得到printer info的大小
nRet = DocumentProperties(IntPtr.Zero, hPrinter, PrinterName, printerInfo.pDevMode, printerInfo.pDevMode, DM_IN_BUFFER | DM_OUT_BUFFER);
if (nRet < 0)
{
throw new ApplicationException("Unable to set the PrintSetting for this printer");
}
GetPrinter(hPrinter, 9, IntPtr.Zero, 0, out nBytesNeeded);
if (nBytesNeeded == 0)
{
throw new ApplicationException("GetPrinter failed.Couldn't get the nBytesNeeded for shared PRINTER_INFO_9 structure");
}
//分配内存缓冲区大小
ptrPrinterInfo = Marshal.AllocCoTaskMem(nBytesNeeded);
bool bSuccess = GetPrinter(hPrinter, 9, ptrPrinterInfo, nBytesNeeded, out nJunk);
if (!bSuccess)
{
throw new ApplicationException("GetPrinter failed.Couldn't get the nBytesNeeded for shared PRINTER_INFO_9 structure");
}
//赋值printerInfo
printerInfo = (PRINTER_INFO_9)Marshal.PtrToStructure(ptrPrinterInfo, printerInfo.GetType());
printerInfo.pDevMode = hDevMode;
//获取一个指向 PRINTER_INFO_9结构的指针
Marshal.StructureToPtr(printerInfo, ptrPrinterInfo, true);
//设置打印机
bSuccess = SetPrinter(hPrinter, 9, ptrPrinterInfo, 0);
if (!bSuccess)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "SetPrinter() failed.Couldn't set the printer settings");
}
PrinterSetting.SendMessageTimeout(new IntPtr(HWND_BROADCAST), WM_SETTINGCHANGE, IntPtr.Zero, IntPtr.Zero, PrinterSetting.SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out hDummy);
}
}
finally
{
ClosePrinter(hPrinter);
}
}
}
