从零开始写 win32 打印机任务管理的 node 模块（1）为什么要重复造轮子？_afeiqiang的博客

1 @thiagoelg/node-printer

Source https://github.com/thiagoelg/node-printer

Features:

no dependecies;
native method wrappers from Windows and POSIX (which uses CUPS 1.4/MAC OS X 10.6 ) APIs;
compatible with node v0.8.x, 0.9.x and v0.11.x (with 0.11.9 and 0.11.13);
compatible with node-webkit v0.8.x and 0.9.2;
getPrinters() to enumerate all installed printers with current jobs and statuses;
getPrinter(printerName) to get a specific/default printer info with current jobs and statuses;
getPrinterDriverOptions(printerName) ( POSIX only) to get a specific/default printer driver options such as supported paper size and other info
getSelectedPaperSize(printerName) ( POSIX only) to get a specific/default printer default paper size from its driver options
getDefaultPrinterName() return the default printer name;
printDirect(options) to send a job to a specific/default printer, now supports CUPS options passed in the form of a JS object (see cancelJob.js example). To print a PDF from windows it is possible by using node-pdfium module to convert a PDF format into EMF and after to send to printer as EMF;
printFile(options) ( POSIX only) to print a file;
getSupportedPrintFormats() to get all possible print formats for printDirect method which depends on OS. RAW and TEXT are supported from all OS-es;
getJob(printerName, jobId) to get a specific job info including job status;
setJob(printerName, jobId, command) to send a command to a job (e.g. 'CANCEL' to cancel the job);
getSupportedJobCommands() to get supported job commands for setJob() depends on OS. 'CANCEL' command is supported from all OS-es.

2 node-native-printer

source https://github.com/MatteoMeil/node-native-printer

listPrinters()

return an array with all installed printers

defaultPrinterName()

return the default printer name

setPrinter(printer)

set the printer to work on

getCurrentPrinter()

get current printer you are working on

printerInfo(printer)

return general info about current working printer such jobs and options:

printer: printer of which get informations
returning value:
- Windows: return only jobs in printer queue
- Unix: return jobs in printer queue and CUPS options. Theese last depends on printer

printerOptions(printer)

return printer-specific options:

printer: name of the printer to print on. If not specified it will print on previously setted printer. If printer is not set it will print on default printer.
Returning value:
- Windows: return an object containing main options for printer:
{

"Collate": "array containing collation options",

"Duplexing": "array containing collation options",

"MaxCopy": "max number of copies you can send to printer",

"SupportsColor": "boolean indicating whether a print can print with colors",

"PaperSheets": "available paper formats supported from printer. If custom is present it can be submitted custom width and height",

"Resolutions": "printer resolutions (i.e.: High, Medium)"

}
- Unix: return an object containing printer-specific options and from PPD file.

print(filename[, options, printer])

filename: file to print
options: a JSON object containing options for printer:
- Windows: default options:
  
  {
  
  "collate": true,
  
  "color": true,
  
  "copies": 1,
  
  "duplex": "Default",
  
  "landscape": false,
  
  "paperSize": "",
  
  "fromPage": 0,
  
  "toPage": 0
  
  }
  
  List of supported extensions can be found here
  
  Notes: duplex is case sensitive, so be careful to write correctly. "paperSize" refers to size of sheet to print on; if you want to print on a paper with custom dimensions, pass "Custom.WidthxHeight" where Width and Height are integer dimensions in hundredths of inch. "fromPage": 0 means document will be printed from first page; "toPage": 0 means document will be printed from "fromPage" to last page.
- Unix: you can use command-line options in JSON-style and/or printer-specific options retrieved from printerOptions(); i.e.:
  
  {
  
  "landscape": true,
  
  "n": 2,
  
  "sides": "two-sided-long-edge"
  
  }
  
  For options that doesn't have a value (like landscape or fit-to-page) you can assign a boolean (see above)
  
  It will be generated and executed a command like lp -d printerName /path/to/filename -o landscape -n 2 -o sides=two-sided-long-edge
Returning value (only for Unix): job id of work sent to printer

printText(text[, options, printer])

Same as print() but you can pass directly a string of text on the first parameter.

3 Electron webContents.print

contents.getPrinters()

获取系统打印机列表

返回 PrinterInfo[]

contents.print([options], [callback])

options Object (可选)
- silent Boolean (optional) - Don't ask user for print settings. 默认值为 false.
- printBackground Boolean (optional) - Prints the background color and image of the web page. 默认值为 false.
- deviceName String (optional) - Set the printer device name to use. Must be the system-defined name and not the 'friendly' name, e.g 'Brother_QL_820NWB' and not 'Brother QL-820NWB'.
- color Boolean (optional) - Set whether the printed web page will be in color or grayscale. 默认值为 true。
- margins Object (optional)
- - marginType String (optional) - Can be default, none, printableArea, or custom. If custom is chosen, you will also need to specify top, bottom, left, and right.
  - top Number (optional) - The top margin of the printed web page, in pixels.
  - bottom Number (optional) - The bottom margin of the printed web page, in pixels.
  - left Number (optional) - The left margin of the printed web page, in pixels.
  - right Number (optional) - The right margin of the printed web page, in pixels.
- landscape Boolean (optional) - Whether the web page should be printed in landscape mode. 默认值为 false.
- scaleFactor Number (optional) - The scale factor of the web page.
- pagesPerSheet Number (optional) - The number of pages to print per page sheet.
- collate Boolean (optional) - Whether the web page should be collated.
- copies Number (optional) - The number of copies of the web page to print.
- pageRanges Object[] (optional) - The page range to print. On macOS, only one range is honored.
- - from Number - Index of the first page to print (0-based).
  - to Number - Index of the last page to print (inclusive) (0-based).
- duplexMode String (optional) - Set the duplex mode of the printed web page. Can be simplex, shortEdge, or longEdge.
- dpi Record<string, number> (optional)
- - horizontal Number (optional) - The horizontal dpi.
  - vertical Number (optional) - The vertical dpi.
- header String (optional) - String to be printed as page header.
- footer String (optional) - String to be printed as page footer.
- pageSize String | Size (optional) - Specify page size of the printed document. Can be A3, A4, A5, Legal, Letter, Tabloid or an Object containing height.
callback Function (可选)
- success Boolean - Indicates success of the print call.
- failureReason String - Error description called back if the print fails.

When a custom pageSize is passed, Chromium attempts to validate platform specific minimum values for width_microns and height_microns. Width and height must both be minimum 353 microns but may be higher on some operating systems.

Prints window's web page. When silent is set to true, Electron will pick the system's default printer if deviceName is empty and the default settings for printing.

Use page-break-before: always; CSS style to force to print to a new page.

Example usage:

const options = {

silent: true,

deviceName: 'My-Printer’,

pageRanges: [

from: 0, to: 1

win.webContents.print(options, (success, errorType) => {

if (!success) console.log(errorType)

最后一个不是 node，因为是 electron 的原始 API，正好项目用了 electron 所以列了进来

为了连接工作马，它使用COM端口或USB Type A（USB使用虚拟COM端口驱动程序与 打印机 进行通信） $ npm i node -pirit-printer --save var connect = require(' node -pririt-printer').connect; connect(function(err, pirit) { if (err) return console.error(err); pirit //wrote some text .writeLine("Оно может сцепляться") .writeLine("Можно напечатать много всего инетересного, но не по те Visual C++ 6.0是开发Windows应用程序的强大工具，但是要通过它实现程序的打印功能，一直是初学者的一个难点，经常有朋友询问如何在VC中实现打印功能，他们往往感到在MFC提供的框架内实现这个问题很复杂，不知道如何下手。本例针对这个问题，介绍一种简单的方法实现文字串的打印功能,读者朋友可以在此基础上稍微改动一下，就可以实现文件、图像的打印功能。　　一、实现方法返回了一个：message信息？而这个message还不是后端给的。最让人生气的是。打开浏览器控制台，居然可以看到401以及后端给的message！在多方求助以后，发现。打印 error是没有用的，这个时候，应该打印 error.response 然后你想要的status和code以及dada里面的数据都有了 Windows和POSIX（使用）API的本机方法包装器；与节点v0.8.x，0.9.x和v0.11.x兼容（具有0.11.9和0.11.13）; 与 node -webkit v0.8.x和0.9.2兼容; getPrinters()枚举具有当前作业和状态的所有已安装 打印机 ； getPrinter(printerName)获取具有当前作业和状态的特定/默认 打印机 信息； getPrinterDriverOptions(printerName) （仅适用于）以获 Node .js PDF 打印用于从 Node .js和Electron 打印 PDF文件的实用程序。 :white_heavy_check_mark: 在Windows和类似Unix的操作系统上工作。 :white_heavy_check_mark: 支持和等标签 打印机 。 yarn add pdf-to-printer npm install --save pdf-to-printer 将PDF文件打印到默认 打印机 ： import ptp from "pdf-to-printer" ; . print ( "assets/pdf-sample.pdf" ) . then ( console . log ) . catch (