直接使用Qt进行硬件打印，而无需使用QPrintDialog [英] Hardware Print directly using Qt without using QPrintDialog

问题描述

我需要在单击按钮时以硬件方式打印pdf文件(已经存在的文件).

I need to hardware-print a pdf file (already existing file) on a button click.

这就像打印所需的文件已被识别并存在，并且单击打印按钮QPushButton时，应将此pdf文件发送到打印机队列，而不会弹出用于prinitng的对话框.

It's like the file needed to print is already identified and present and upon clicking print button QPushButton this pdf file should be sent to printer queue without popping up a dialog for prinitng.

QPrinter或Qt中的任何其他设施是否可能? (平台是linux.)

Is this possible with QPrinter or any other facility in Qt? (Platform is linux.)

推荐答案

通常，Qt(据我所知)没有内置的方法来执行此操作.您需要一个了解如何将PDF内容转换为(例如)后脚本以发送到打印机的程序.

In general, Qt has (as far as I know) no built-in way to do this. You need a program that understands how to convert PDF content into (for example) post-script to send to a printer.

Google进行了快速搜索，找到了一个名为" Poppler "的库，该库可以将PDF内容呈现到，QImage实例，然后可以打印这些实例.

A quick Google search came up with a library called "Poppler" that can render PDF content onto, say, QImage instances, and then you could print those.

也就是说，如果您限制自己使用linux，则可以创建一个QProcess并调用以下内容:

That said, if you are restricting yourself to linux, you could just create a QProcess and call something like:

lp document.pdf

这篇关于直接使用Qt进行硬件打印，而无需使用QPrintDialog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！