创建打印机端口 [英] Create printer port
问题描述
嗨.我需要有关在C#中以编程方式创建打印机端口的帮助.
这就是我拥有的
ManagementClass portClass = new ManagementClass("Win32_TCPIPPrinterPort");
ManagementObject portObject = portClass. CreateInstance();
portObject [名称"] = portName; PortNumber] = portNumber;
portObject [" Protocol] = 1; ;
portObject ["SNMPDevIndex"] = 1;
PutOptions options = new PutOptions();
options.Type = PutType.UpdateOrCreate;
这可以正常工作，但是会创建一个TCP/IP打印机端口.我需要创建一个重定向的打印机端口，该端口类型是RedMon创建的.
如何创建任何指定类型的端口?是否可以编写以下形式的方法:
void CreatePort(string portName，string portType)
创建一个名为portName并键入portType的端口，假设
Hi. I need help with creating a printer port programmatically in C#.
This is what I have
ManagementClass portClass = new ManagementClass("Win32_TCPIPPrinterPort");
ManagementObject portObject = portClass.CreateInstance();
portObject["Name"] = portName;
portObject["HostAddress"] = "174.30.164.15";
portObject["PortNumber"] = portNumber;
portObject["Protocol"] = 1;
portObject["SNMPCommunity"] = "public";
portObject["SNMPEnabled"] = true;
portObject["SNMPDevIndex"] = 1;
PutOptions options = new PutOptions();
options.Type = PutType.UpdateOrCreate;
portObject.Put(options);
This works fine, but it creates a TCP/IP printer port. I need to create a redirected printer port, a port type which is created by RedMon.
How do I create a port of any specified type? Is it possible to write a method of the form
void CreatePort(string portName,string portType)
which creates a port with the name portName and type portType, assuming that a port type with the name portType exists?
推荐答案
记录如下:
首先，我们在来自winspool.drv的必要功能.这是我们需要的结构:
For the record, here it is:
First we marshal in the necessary functions from winspool.drv. Here are the structures that we need:
private const int MAX_PORTNAME_LEN = 64;
private const int MAX_NETWORKNAME_LEN = 49;
private const int MAX_SNMP_COMMUNITY_STR_LEN = 33;
private const int MAX_QUEUENAME_LEN = 33;
private const int MAX_IPADDR_STR_LEN = 16;
private const int RESERVED_BYTE_ARRAY_SIZE = 540;
private enum PrinterAccess
{
ServerAdmin=0x01,
ServerEnum=0x02,
PrinterAdmin=0x04,
PrinterUse=0x08,
JobAdmin=0x10,
JobRead=0x20,
StandardRightsRequired=0x000f0000,
PrinterAllAccess=(StandardRightsRequired | PrinterAdmin | PrinterUse)
}
[StructLayout(LayoutKind.Sequential)]
private struct PrinterDefaults
{
public IntPtr pDataType;
public IntPtr pDevMode;
public PrinterAccess DesiredAccess;
}
[StructLayout(LayoutKind.Sequential,CharSet=CharSet.Unicode)]
private struct PortData
{
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=MAX_PORTNAME_LEN)]
public string sztPortName;
public UInt32 dwVersion;
public UInt32 dwProtocol;
public UInt32 cbSize;
public UInt32 dwReserved;
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=MAX_NETWORKNAME_LEN)]
public string sztHostAddress;
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=MAX_SNMP_COMMUNITY_STR_LEN)]
public string sztSNMPCommunity;
public UInt32 dwDoubleSpool;
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=MAX_QUEUENAME_LEN)]
public string sztQueue;
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=MAX_IPADDR_STR_LEN)]
public string sztIPAddress;
[MarshalAs(UnmanagedType.ByValArray,SizeConst=RESERVED_BYTE_ARRAY_SIZE)]
public byte[] Reserved;
public UInt32 dwPortNumber;
public UInt32 dwSNMPEnabled;
public UInt32 dwSNMPDevIndex;
}
这是我们需要的Windows API函数的声明:
And here are the declarations of the Windows API functions that we'll need:
[DllImport("winspool.drv")]
private static extern bool OpenPrinter(string printerName,out IntPtr phPrinter,ref PrinterDefaults printerDefaults);
[DllImport("winspool.drv")]
private static extern bool ClosePrinter(IntPtr phPrinter);
[DllImport("winspool.drv",CharSet=CharSet.Unicode)]
private static extern bool XcvDataW(IntPtr hXcv,string pszDataName,IntPtr pInputData,UInt32 cbInputData,out IntPtr pOutputData,UInt32 cbOutputData,out UInt32 pcbOutputNeeded,out UInt32 pdwStatus);
这是添加监视器端口的功能:
And here is the function which adds the monitor port:
/**
* <summary>Adds a monitor printer port with the given name and type.</summary>
* <param name="portName">The name of the new port (must end with ':').</param>
* <param name="portType">The type of the new port (ex. "Redirected Port").</param>
*/
public static void AddMonitorPrinterPort(string portName,string portType)
{
IntPtr printerHandle;
PrinterDefaults defaults = new PrinterDefaults { DesiredAccess = PrinterAccess.ServerAdmin };
if (! OpenPrinter(",XcvMonitor "+portType,out printerHandle,ref defaults))
throw new Exception("Could not open printer for the monitor port "+portType+"!");
try
{
PortData portData = new PortData
{
dwVersion = 1,
dwProtocol = 1, // 1 = RAW, 2 = LPR
dwPortNumber = 9100, // 9100 = default port for RAW, 515 for LPR
dwReserved = 0,
sztPortName = portName,
sztIPAddress = "172.30.164.15",
sztSNMPCommunity = "public",
dwSNMPEnabled = 1,
dwSNMPDevIndex = 1
};
uint size = (uint) Marshal.SizeOf(portData);
portData.cbSize = size;
IntPtr pointer = Marshal.AllocHGlobal((int) size);
Marshal.StructureToPtr(portData,pointer,true);
IntPtr outputData;
UInt32 outputNeeded,status;
try
{
if (! XcvDataW(printerHandle,"AddPort",pointer,size,out outputData,0,out outputNeeded,out status))
throw new PrinterPortException("Could not add port (error code "+status+")!");
}
finally
{
Marshal.FreeHGlobal(pointer);
}
}
finally
{
ClosePrinter(printerHandle);
}
}
这篇关于创建打印机端口的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
