打印机自助打印代码（队列监控拦截+取消+状态获取）（附C#，C++，VB实现）

Monitor jobs in a printer queue (.NET)

https://www.codeproject.com/Articles/51085/Monitor-jobs-in-a-printer-queue-NET

c# 完整代码展示了如何获取打印机任务状态

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Print Spooler API

https://docs.microsoft.com/zh-cn/windows/win32/printdocs/print-spooler-api

The Print Spooler API provides an interface to the print spooler for applications to manage printers and print jobs.

The Print Spooler API is used by an application as part of its programming and not directly by end users.

PrintQueue.GetPrintJobInfoCollection Method

Creates a collection that contains a PrintSystemJobInfo object for each job in the queue.

https://docs.microsoft.com/en-us/dotnet/api/system.printing.printqueue.getprintjobinfocollection?view=netframework-4.8

"Virtual Printer" or "Moving Printjobs" (C++)

https://cboard.cprogramming.com/windows-programming/108156-virtual-printer-moving-printjobs.html

Monitoring a Printer Queue from VB.NET

https://www.codeproject.com/Articles/3313/Monitoring-a-Printer-Queue-from-VB-NET

How to catch printer event in python

https://stackoverflow.com/questions/15748386/how-to-catch-printer-event-in-python

Printers and SafeHandles

https://www.codeproject.com/Articles/14690/Printers-and-SafeHandles

Printers and SafeHandles (Part 2)

https://www.codeproject.com/Articles/15084/Printers-and-SafeHandles-Part-2