A div by default cannot be given focus. However, you can change that by adding a tabindex attribute to the div: <div tabindex=”0″ id=”example”></div> You can then give the div focus, and also blur it with the hover event: $(“#example”).hover(function() { this.focus(); }, function() { this.blur(); }).keydown(function(e) { alert(e.keyCode); }); When the div has focus, … Read more
You won’t be able to change the keyboard layout using JS, but you can capture the keydown event and replace the character with something like this: http://jsfiddle.net/SxdKZ/ $(‘textarea’).on(‘keydown’, function(e){ console.log(e.keyCode); if( e.keyCode == 90 ){ e.preventDefault(); $(this).append(‘y’).focus(); } if( e.keyCode == 89 ){ e.preventDefault(); $(this).append(‘z’).focus(); } });
I don’t know of any cross-platform lightweight module that listens for keypresses. But here’s a suggestion in case you want to implement something simple: Check out this question on getting a single keypress at a time in the Python FAQ. You could experiment a bit with blocking reads from sys.stdin and threading. But this may … Read more
You can send key events, and anything listening for them will get them, but they will not change the input, so you will not see the letter A appear, for example. This is mostly a security thing; see “Manually firing events” for a discussion about that. So, if you want the letter to appear, you … Read more
Use ReadConsoleInput() API. Watch for events of kind KEY_EVENT. This won’t work for all keydown events (Ctrl-key, shift-key, Pause-key cannot be read), but most can be read. Use GetNumberOfConsoleInputEvents to avoid blocking.
I guess you are asking how to control the paddles with the keyboard. I assume you have the final ping pong codes running on your computer (If not, you can find them at the end of this section). 1 – In the main.py import the Window class: from kivy.core.window import Window 2 – Redefine the … Read more
It is a chord, you cannot detect it without memorizing having seen the first keystroke of the chord. This works: public partial class Form1 : Form { public Form1() { InitializeComponent(); } private bool prefixSeen; protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { if (prefixSeen) { if (keyData == (Keys.Alt | Keys.Control | Keys.P)) … Read more
So the problem that I am having appears to be a bug that occurs only on Linux Yes this is a Linux problem. On Windows when a key is held down you get multiple KeyPressed events but only a single KeyReleased event. This question is asked often and I’ve never seen a good solution. But … Read more
I agree with William that in general it is a bad idea to hijack the function keys. That said, I found the shortcut library that adds this functionality, as well as other keyboard shortcuts and combination, in a very slick way. Single keystroke: shortcut.add(“F1”, function() { alert(“F1 pressed”); }); Combination of keystrokes: shortcut.add(“Ctrl+Shift+A”, function() { … Read more
For console application you can do this, the do while loop runs untill you press x public class Program { public static void Main() { ConsoleKeyInfo keyinfo; do { keyinfo = Console.ReadKey(); Console.WriteLine(keyinfo.Key + ” was pressed”); } while (keyinfo.Key != ConsoleKey.X); } } This will only work if your console application has focus. If … Read more