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 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."); } }
/// <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); }