printing

问题 I've got a problem with detecting a print event in javascript. For example, a user wats to print document and presses print in a web-page, then another window appers, e.g. to print from Adobe Reader, then appears another window of Adobe Reader where you can set properties, choose pages to print and what not...and there is the print button in this window. Can I actually detect when the user presses this print button inside this Adobe Reader window in browser using javascript? I've already

问题 I've got a problem with detecting a print event in javascript. For example, a user wats to print document and presses print in a web-page, then another window appers, e.g. to print from Adobe Reader, then appears another window of Adobe Reader where you can set properties, choose pages to print and what not...and there is the print button in this window. Can I actually detect when the user presses this print button inside this Adobe Reader window in browser using javascript? I've already

问题 I am trying to print a large string, and it is in the magnitudes of a 100 Mb, and it needs to be done in one shot. Looks like it is getting truncated. 回答1: while this doesn't answer your question, for moving loads of data print is probably a bad idea: print is meant for short informational printouts. it provides features you usually don't want when moving large data, like formatting and appending an EOL. Instead use something more low-level like write on the sys.stdout filehandle (or some

问题 I've seen on various mailing lists and forums that people keep mentioning that the print function in Python 3 is thread safe. From my own testing, I see no reason to doubt that. import threading import time import random def worker(letter): print(letter * 50) threads = [threading.Thread(target=worker, args=(let,)) for let in "ABCDEFGHIJ"] for t in threads: t.start() for t in threads: t.join() When I run it with Python 3, even though some of the lines may be out of order, they are still always

问题 I ran into a problem with sizing pages on a thermal printer. I have started from this answer: https://stackoverflow.com/a/27165167/1030464 and now I have the code I pasted below. This works nicely, however altough I calculate and set the size of the page, it seems to print a full A4 sized page each time. (I am testing on a Sam4s Ellix II and Microsoft PDF Printer) - It is a big problem, as it's needed to often print 5-6 line long text snippets. I need to support multiple thermal printers and

问题 In my page there's only one image. Kind of 1500x3000 px. In the printer, I need that this image's maximum width to be the width of the page, so I did: width 100% in the css, and it works. But the height... the old bullshit of height 100% will never work. Because it always will be 100% of the parent container, then someone must have height defined. Or html or body. So, my question is: make this image fit in one page. Any ideas? 回答1: One way to do it would be to perform some calculations to

问题 In my page there's only one image. Kind of 1500x3000 px. In the printer, I need that this image's maximum width to be the width of the page, so I did: width 100% in the css, and it works. But the height... the old bullshit of height 100% will never work. Because it always will be 100% of the parent container, then someone must have height defined. Or html or body. So, my question is: make this image fit in one page. Any ideas? 回答1: One way to do it would be to perform some calculations to

问题 I have occasion to need to print code (Horrors!!! ;) ), and i was wondering what editor or tool would i use to print that code out with proper formatting and syntax highlighting? If it's important, it will be c# code but ideally the tool will work for as many languages as possible. Can Notepad++ or something handle this? 回答1: Yes, Notepad++ can certainly print code with syntax highlighting. Colour printing would obviously be preferable, but on the occasions when I've printed in black and

问题 I have occasion to need to print code (Horrors!!! ;) ), and i was wondering what editor or tool would i use to print that code out with proper formatting and syntax highlighting? If it's important, it will be c# code but ideally the tool will work for as many languages as possible. Can Notepad++ or something handle this? 回答1: Yes, Notepad++ can certainly print code with syntax highlighting. Colour printing would obviously be preferable, but on the occasions when I've printed in black and

问题 I'm new to Python and having difficulty getting the output to print on one line. This is pertaining to the online Python class Learning Python Essentials Lab 5.1.10.6 and printing to a 7-segment-device. If you are unfamiliar with a 7-segment-device, see Wikipedia. I am NOT using any external device. I only need it to print to my own terminal. All the other StackOverflow solutions I found are related to using actual devices and didn't help. Lab Link: https://edube.org/learn/programming