/// <summary>
/// 已解析过的打印任务列表
/// </summary>
public static List<UInt32> AnalyzedJobs = new List<uint>();//20141112
/// <summary>
/// 获取指定打印任务的信息
/// </summary>
/// <param name="jobid">打印任务的ID</param>
/// <param name="level">打印信息的等级(1 or 2)</param>
public static PRINTED_ITEM_STRU AnalyzePrintJobInfo(string printername, IntPtr hprinter, UInt32 jobid, WinSpool.JOBSTATUS jobstatus, UInt32 level)
{
if (hprinter == IntPtr.Zero)
throw new Exception("No30:打印句柄没有初始化！");
PRINTED_ITEM_STRU cstru = new PRINTED_ITEM_STRU();
if (AnalyzedJobs.Contains(jobid))//已经解析过则不再解析//20141112
{
return cstru;
}
//防止对同一个打印任务进行重复的解析
if (jobstatus != WinSpool.JOBSTATUS.JOB_STATUS_PRINTING && jobstatus != 0)
{
//数据不需要分析
return cstru;
}
try
{
//20141112
if (AnalyzedJobs.Count > 100)
AnalyzedJobs.RemoveRange(0, 10);
AnalyzedJobs.Add(jobid);
//20141112 end
UInt32 lNeeded = 0;
UInt32 lRetrieve = 0;
//获取任务信息的字节数
bool ret = WinSpool.GetJob(hprinter, jobid, level, IntPtr.Zero, 0, out lNeeded);
//初始化对应的内存空间
lRetrieve = lNeeded;
IntPtr pData = Marshal.AllocHGlobal((int)lRetrieve);
//获取任务信息
ret = WinSpool.GetJob(hprinter, jobid, level, pData, lRetrieve, out lNeeded);
if (ret == true)//如果获取成功，则进行分析
{
//根据level使用对应的结构体
int pTemp = pData.ToInt32();//start pointer
WinSpool.JOB_INFO_2 info2 = new WinSpool.JOB_INFO_2();
info2 = (WinSpool.JOB_INFO_2)Marshal.PtrToStructure
(new IntPtr(pTemp), typeof(WinSpool.JOB_INFO_2));
int intRet = System.Convert.ToInt32(info2.Status);
//Marshal.FreeHGlobal(new IntPtr(pTemp));
//WinSpool.ClosePrinter(hprinter);
switch (level)
{
case 1:
WinSpool.JOB_INFO_1 jobinfo = new WinSpool.JOB_INFO_1();
jobinfo = (WinSpool.JOB_INFO_1)Marshal.PtrToStructure(new IntPtr(pTemp), typeof(WinSpool.JOB_INFO_1));
cstru.file_name = jobinfo.pDocument;
cstru.page_num = (int)jobinfo.TotalPages;
break;
case 2:
WinSpool.JOB_INFO_2 jobinfo2 = new WinSpool.JOB_INFO_2();
jobinfo2 = (WinSpool.JOB_INFO_2)Marshal.PtrToStructure(new IntPtr(pTemp), typeof(WinSpool.JOB_INFO_2));
WinSpool.DEVMODE devm = new WinSpool.DEVMODE();
devm = (WinSpool.DEVMODE)Marshal.PtrToStructure(jobinfo2.pDevMode, typeof(WinSpool.DEVMODE));
cstru.copy_num = devm.dmCopies;
cstru.color = devm.dmColor;
cstru.duplex = devm.dmDuplex;
cstru.paper_type = devm.dmPaperSize.ToString();
cstru.file_name = jobinfo2.pDocument;
cstru.page_num = jobinfo2.TotalPages;
cstru.time = jobinfo2.StartTime.ToString();
break;
default:
WinSpool.JOB_INFO_1 jobinfod = new WinSpool.JOB_INFO_1();
jobinfod = (WinSpool.JOB_INFO_1)Marshal.PtrToStructure(new IntPtr(pTemp), typeof(WinSpool.JOB_INFO_1));
cstru.file_name = jobinfod.pDocument;
cstru.page_num = (int)jobinfod.TotalPages;
break;
}
}
cstru.printer_name = printername;
////对结构体进行赋值
//PrintDocument pdoc = new PrintDocument();
//pdoc.PrinterSettings.PrinterName = printername;
//cstru.copy_num = pdoc.PrinterSettings.Copies;
//cstru.time = string.Empty;
//cstru.color = pdoc.PrinterSettings.DefaultPageSettings.Color == false ? 0 : 1;
//cstru.duplex = pdoc.PrinterSettings.Duplex == Duplex.Simplex ? 0 : 1;
//cstru.paper_type = pdoc.PrinterSettings.DefaultPageSettings.PaperSize.PaperName;
//释放内存空间
Marshal.FreeHGlobal(pData);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
return cstru;
}
