stdout and key press

Posted by Jack on Super User See other posts from Super User or by Jack
Published on 2010-03-09T10:24:05Z Indexed on 2010/03/09 10:38 UTC
Read the original article Hit count: 269

Filed under:

keyboard

|

stdout

Hi, when in console, if I press a key, some interrupt controller sends code of that key to CPU, which looks into some table and than represent that keypress by printing some charracter to stdout. But, is keyboard sending an ASCII code of that key, or just some standardised code? Since there is so many languages and extra characters, OS must further translate its code into some character according to user selected scheme, I guess. I ask, becouse I am from Czech Republic, and we use some characters that do not exists in standart ASCII code. So I was thinking, if I enter this character into a console, and then print it, lets say in C++ using cin and cout, and I have set locale to Czech, stdin must actually send some non-ASCII code of the character I pressed to input stream. Am I right?

© Super User or respective owner

Related posts about keyboard

HTG Reviews the CODE Keyboard: Old School Construction Meets Modern Amenities

as seen on How to geek - Search for 'How to geek'
There’s nothing quite as satisfying as the smooth and crisp action of a well built keyboard. If you’re tired of mushy keys and cheap feeling keyboards, a well-constructed mechanical keyboard is a welcome respite from the $10 keyboard that came with your computer. Read on as we put the… >>> More
how to set keyboard for phonetic Hindi typing oneiric for Wx keyboard on QWERTY keyboard

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am trying to type documents in Hindi language. My OS: Ubuntu 11.10 Gnome environment (http://packages.ubuntu.com/search?keywords=gnome-session-fallback) I do not use unity interface.The method is shown here http://www.youtube.com/watch?v=LL7icGNhIfI I am able to type in Hindi in Libreoffice and… >>> More
Send regular keyboard samples OR keyboard state changes over network

as seen on Game Development - Search for 'Game Development'
Building a multi player asteroids game where ships compete with each other. Using UDP. Wanted to minimize traffic sent to server. Which would you do: Send periodic keyboard state samples every from client every to match server physics update rate e.g. 50 times per second. Highly resilient to packet… >>> More
Non Blocking Keyboard on WinCE accessing the virtual keyboard

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello Guys, I am desperately looking for a solution that enables me to read keyboard events in a non blocking way. These Keyboard events are generated by a VIRTUAL KEYBOARD that comes with the WinCE device. I have a console application running in C++, where the user is asked to navigate via 'ESC'… >>> More
Fix keyboard orientation in landscape iPad app (upside down keyboard)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm converting a landscape (UIInterfaceOrientationLandscapeRight) iPhone app to be a universal app. So far I've got the orientation working properly: the iPad version will launch with the right splash graphic and start in the right orientation (LandscapeLeft or LandscapeRight) depending on how the… >>> More

Related posts about stdout

redirect temporarily STDOUT to another file descriptor, but still to screen

as seen on Server Fault - Search for 'Server Fault'
I'm making a script that executes some commands inside, and these commands show some output on STDOUT (and STDERR as well, but that's no problem). I need that my script generates a .tar.gz file to STDOUT, so the output of some commands executed in the script also go to STDOUT and this ends with a… >>> More
sys.stdout not reassigning to sys.__stdout__

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm pretty new to Python so I am still just learning the language. One of the things I came across was reassigning sys.stdout to change the default output of print. So I wrote this as a test: import sys sys.stdout = open('log.txt','a') print('hey') sys.stdout.close() sys.stdout = sys.__stdout__ print('hi') Now… >>> More
mod_perl loses STDOUT in middle of request

as seen on Server Fault - Search for 'Server Fault'
Hi, I have been having this weird issue where mod_perl seems to lose STDOUT in the middle of the request. So far I have eliminated everything I could think of. You might have seen this bug related to the following errors in error_log : Apache2 IO flush: (103) Apache2::RequestIO::read: (104) Software… >>> More
How can I capture output from LFTP? (Output not written to STDOUT or STDERR?)

as seen on Server Fault - Search for 'Server Fault'
I would like get access to progress information from lftp. Currently, I'm using curl like so: curl http://example.com/file -o file -L 2> download.log This writes curl's progress information to the download.log file, which I can tail to get real-time progress. But the same approach doesn't work… >>> More
user crontabs don't work, only /etc/crontab

as seen on Super User - Search for 'Super User'
Hi when I use the command crontab -e to set up cron, the commands get triggered (according to syslog) but nothing happens. Also if I run sudo crontab -e. The only way to actually get cron working is to manually etc /etc/crontab I'm confused, since syslog gives me the same output for both methods… >>> More