/// <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 bool ModifyPrintInfo3(string PrinterName, ref PrinterData PS)
{
pd.pDatatype = 0;
pd.pDevMode = 0;
pd.DesiredAccess = PRINTER_ALL_ACCESS;
if (PrinterName == string.Empty || PrinterName == null)
{
PrinterName = GetDeaultPrinterName();
}
nRet = Convert.ToInt32(OpenPrinter(PrinterName, out hPrinter, ref pd));
if (nRet == 0)
{
lastError = Marshal.GetLastWin32Error();
throw new Win32Exception(Marshal.GetLastWin32Error());
}
//调用GetPrinter获取PRINTER_INFO_2在内存的字节数
GetPrinter(hPrinter, 2, IntPtr.Zero, 0, out nBytesNeeded);
if (nBytesNeeded <= 0)
{
ClosePrinter(hPrinter);
return(false);
}
//为PRINTER_INFO_2分配足够的内存
ptrPrinterInfo = Marshal.AllocHGlobal(nBytesNeeded);
if (ptrPrinterInfo == IntPtr.Zero)
{
ClosePrinter(hPrinter);
return(false);
}
//调用GetPrinter填充当前设定，所要改变的信息（ptrPrinterInfo中）
if (!GetPrinter(hPrinter, 2, ptrPrinterInfo, nBytesNeeded, out nBytesNeeded))
{
Marshal.FreeHGlobal(ptrPrinterInfo);
ClosePrinter(hPrinter);
return(false);
}
//把内存中指向PRINTER_INFO_2的指针转化为PRINTER_INFO_2结构
//如果GetPrinter没有得到DEVMODE结构，尝试调用DocumentProperties得到DEVMODE结构
pinfo = (PRINTER_INFO_2)Marshal.PtrToStructure(ptrPrinterInfo, typeof(PRINTER_INFO_2));
IntPtr Temp = new IntPtr();
if (pinfo.pDevMode == IntPtr.Zero)
{
// If GetPrinter didn't fill in the DEVMODE, try to get it by calling
// DocumentProperties...
IntPtr ptrZero = IntPtr.Zero;
//get the size of the devmode structure
nBytesNeeded = DocumentProperties(IntPtr.Zero, hPrinter, PrinterName, IntPtr.Zero, IntPtr.Zero, 0);
if (nBytesNeeded <= 0)
{
Marshal.FreeHGlobal(ptrPrinterInfo);
ClosePrinter(hPrinter);
return(false);
}
ptrDM = Marshal.AllocCoTaskMem(nBytesNeeded);
int i;
i = DocumentProperties(IntPtr.Zero, hPrinter, PrinterName, ptrDM, ptrZero, DM_OUT_BUFFER);
if ((i < 0) || (ptrDM == IntPtr.Zero))
{
//Cannot get the DEVMODE structure.
Marshal.FreeHGlobal(ptrDM);
ClosePrinter(ptrPrinterInfo);
return(false);
}
pinfo.pDevMode = ptrDM;
}
dm = (DEVMODE)Marshal.PtrToStructure(pinfo.pDevMode, typeof(DEVMODE));
//修改打印机的设定信息
if ((((int)PS.Duplex < 0) || ((int)PS.Duplex > 3)))
{
throw new ArgumentOutOfRangeException("nDuplexSetting", "nDuplexSetting is incorrect.");
}
else
{
if (PrinterName == string.Empty || PrinterName == null)
{
PrinterName = GetDeaultPrinterName();
}
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, pinfo.pDevMode, true);
Marshal.StructureToPtr(pinfo, ptrPrinterInfo, true);
pinfo.pSecurityDescriptor = IntPtr.Zero;
//Make sure the driver_Dependent part of devmode is updated...
nRet = DocumentProperties(IntPtr.Zero, hPrinter, PrinterName, pinfo.pDevMode, pinfo.pDevMode, DM_IN_BUFFER | DM_OUT_BUFFER);
if (nRet <= 0)
{
Marshal.FreeHGlobal(ptrPrinterInfo);
ClosePrinter(hPrinter);
return(false);
}
//SetPrinter 更新打印机信息
if (!SetPrinter(hPrinter, 2, ptrPrinterInfo, 0))
{
Marshal.FreeHGlobal(ptrPrinterInfo);
ClosePrinter(hPrinter);
return(false);
}
//通知其他应用程序，打印机信息已经更改
PrinterSetting.SendMessageTimeout(new IntPtr(HWND_BROADCAST), WM_SETTINGCHANGE, IntPtr.Zero, IntPtr.Zero, PrinterSetting.SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out hDummy);
//释放
if (ptrPrinterInfo == IntPtr.Zero)
{
Marshal.FreeHGlobal(ptrPrinterInfo);
}
if (hPrinter == IntPtr.Zero)
{
Marshal.FreeHGlobal(hPrinter);
}
return(true);
}
}
/// <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);
}
}
}
