关于打印信息监控的问题,请各位帮忙!!!

Question

是想控制自己的打印信息，还是要去监控打印机?
获取所有要打印的信息(包括其他用户的打印)?

Answer 1

是去监控打印机,不过是本机的打印机.也要监控通过网络在本机的打印信息.

Answer 2

using System;
using System.Data;
using System.Runtime.InteropServices;namespace EnumPrintjobstest
{
class Class1
{
[DllImport("winspool.drv",CharSet=CharSet.Auto)]
static extern bool OpenPrinter(string name,out IntPtr hPrinter, IntPtr pDefault); [DllImport("winspool.drv",CharSet=CharSet.Auto)]
static extern bool ClosePrinter(IntPtr hPrinter);// BOOL EnumJobs(
// HANDLE hPrinter,    // handle to printer object
// DWORD FirstJob,     // index of first job
// DWORD NoJobs,       // number of jobs to enumerate
// DWORD Level,        // information level
// LPBYTE pJob,        // job information buffer
// DWORD cbBuf,        // size of job information buffer
// LPDWORD pcbNeeded,  // bytes received or required
// LPDWORD pcReturned  // number of jobs received
// );
[DllImport("winspool.drv",CharSet=CharSet.Auto)]
// static extern bool EnumJobs(IntPtr hPrinter,int FirstJob,int NoJobs,int Level,out IntPtr pJob,int cbBuf,out int pcbNeeded,out int pcReturned);
static extern bool EnumJobs(IntPtr hPrinter,int FirstJob,int NoJobs,int Level,out IntPtr pJob,int cbBuf,out IntPtr pcbNeeded,out IntPtr pcReturned); [STAThread]
static void Main(string[] args)
{
string PrintName="\\"+"\\"+"FRANK"+"\\"+"Epson LQ";
EnumJobs(PrintName);
// Console.Write(PrintName.ToString());
string str=Console.ReadLine();

} private static void EnumJobs(string StrPrintName)
{
bool bRet;
int cbBuf=0;
IntPtr pPrintHand= IntPtr.Zero;
IntPtr Pdef= IntPtr.Zero;
IntPtr pJob=IntPtr.Zero;
// int dwNeeded,dwReturned;
IntPtr dwNeeded,dwReturned;

bRet = OpenPrinter(StrPrintName, out pPrintHand,  Pdef);

Console.Write("PrintName:{0}\n",StrPrintName); //ok
Console.Write("PrintHand:{0}\n",pPrintHand);    //ok if (bRet)
{
if( ! EnumJobs( pPrintHand, 0, 256,1,out pJob , 0, out dwNeeded,out dwReturned ) )
{
Console.Write("dwNeeded {0}",dwNeeded);        //ok
Console.Write("dwReturned {0}",dwReturned);    //error ?
// ......
} }
else
{
ClosePrinter(pPrintHand);
Console.Write("PrintName error");
}

ClosePrinter(pPrintHand);

}
}