arrow-keys

How can I capture arrow keys in a terminal, without the user having to press "enter" after the arrow key? Elf King Look into the Ruby console libraries ruby-termios and ncurses-ruby . 来源： https://stackoverflow.com/questions/3301777/how-can-i-capture-terminal-arrow-keys-in-ruby

Basically, I have a form with a custom control on it (and nothing else). The custom control is completely empty, and the form has KeyPreview set to true. With this setup, I am not receiving any KeyDown events for any arrow keys or Tab. Every other key that I have on my keyboard works. I have KeyDown event handlers hooked up to everything that has such events, so I'm sure I'm not missing anything. Also of note is that if I remove the (completely empty) custom control, I DO get the arrow key events. What on earth is going on here? EDIT: I added this to both the form and the control, but I'm

I have one autocomplete search, in which by typing few characters it will show all the names, which matches the entered character. I am populating this data in the jsp using DIV tag, by using mouse I'm able to select the names. But I want to select the names in the DIV tag to be selected using the keyboard up and down arrow. Can anyone please help me out from this. Use the onkeydown and onkeyup events to check for key press events in your results div: var UP = 38; var DOWN = 40; var ENTER = 13; var getKey = function(e) { if(window.event) { return e.keyCode; } // IE else if(e.which) { return e

I am trying to override the volume buttons to act as Up/Down arrow keys (i.e. they should move focus around on all of my activities focus-able Views.) To do so I am overriding my activities dispatchKeyEvent() method note that I also tried onKeyDown() but some portion of my volume key events was still going thru to the system, my device has audible feedback when you change the volume. I could still hear the beep but the volume was not actually being changed. Switching to dispatchKeyEvent() took away the beep coming from the system. Here is my current dispatchKeyEvent() method: @Override public

So I have this simple slideshow: <div class="container"> <div id="slideshow"> <img alt="slideshow" src="1.jpg" id="imgClickAndChange" onclick="changeImage()" /> </div> </div> I have managed to make the images change when I click like this: <script language="javascript"> var imgs = ["2.jpg", "3.jpg", "4.jpg", "5.jpg"]; function changeImage() { document.getElementById("imgClickAndChange").src = imgs[0]; imgs.push(imgs.shift()) } </script> The problem is I also want the images to change when I press the right arrow (for next) and left arrow (to go back). How can I do this? I've tried adding an

I'm working on programming a Tetris game in Visual C# 2005. This is the most extensive program I have designed yet. I create a shape class and a block class to control the location, movement, and display of the different Tetris pieces. I have moveDown(), moveLeft(), and moveRight() functions for each shape (and corresponding canMoveDown(), canMoveLeft(), canMoveRight() boolean functions that verify it's ok to move). This is all working beautifully. I want to use the down, right, and left arrow keys to let the user move the block around, in addition to using a timer to have the shape

I'm trying to move a div using the arrow keys. I have the following code which is not working for me. Do you see anything wrong with it. Check jsfiddle at http://jsfiddle.net/N5Ltt/1/ $(document).keydown(function(e) { switch (e.which) { case 37: $('div').stop().animate({ left: '-= 10' }); //left arrow key break; case 38: $('div').stop().animate({ top: '-= 10' }); //up arrow key break; case 39: $('div').stop().animate({ left: '+= 10' }); //right arrow key break; case 40: $('div').stop().animate({ top: '+= 10' }); //bottom arrow key break; } }) There are two things you need to do: Your <div>