"keydown" is an event used in writing software that is triggered when a key on the keyboard is being pressed. It usually precedes the event "keyup".
Questions tagged [keydown]
1434 questions
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votes
1 answer
javascript keyboard functions
How can i make a function that when i press down for example "A" key on my keyboard it pushes down On and sends out signal for nupp('/TS'). Also on "A" key relase it should top sending the signal for nupp('/TS').
in2d
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votes
1 answer
IsLetter on DataGrid KeyDown Event
I am attempting to break down user input onto a KeyDown event on a DataGrid by working out whether their input is a letter or a number. This is the method I am using so far;
private void OnDataGridKeyDown(object sender, KeyEventArgs e)
{
if…
CBreeze
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votes
1 answer
how can i repeat a code that i write in a form key down event each time i press that key
in c# how can i repeat a code that i write in a form key down event each time i press that key
i mean i want to re run that code each time i press the key
i think this can be so simple for u cause i am beginner
thanks
this code is what i already…
A programmer
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votes
2 answers
input only allow english and non-english character javascript?
How can I make input box for name only allow both E and non-E character, not special character on keydown event.
For example:
Accept: a â è ㅎ 啊
Deny: . \ | } ) # +
And also I don't know why:
'.'.charCodeAt(0) = 46 (chrome console)
In my keydown…
chiquyet
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votes
4 answers
keyDown doesn't work swift
That's my code:
override func keyDown(theEvent: NSEvent) {
super.keyDown(theEvent)
switch theEvent.character {
case NSLeftArrowFunctionKey:
println(1)
case NSRightArrowFunctionKey:
println(2)
case…
pomo_mondreganto
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votes
1 answer
C# Form Keydown
I got the following problem
Code:
void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
byte[] outStream = System.Text.Encoding.ASCII.GetBytes(textBox1.Text + "$");
…
Chris Schmidt
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votes
2 answers
Detect which key is pressed
How do I tell which key was pressed in a Cocoa Application (I know each key has an associated number)? In my case, I want to log the key to the console.
This is my code:
- (BOOL)acceptsFirstResponder {
return YES;
}
-(void)keyUp:(NSEvent*)event…
Viper OS X
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votes
2 answers
Is it possible to have a key "Start" and then "Stop" a function?
I want to achieve the following:
I press and release the C key, and the letter C is typed, as normal.
But instead, I want to press and release the C key, and have CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC.. typed continuously until I press…
Willicious
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votes
2 answers
How to check letter by letter using addEventListener 'keydown'?
I'm trying to check if is true or false the letter I typed.
for exemplo, I have one String that I caught from a array doing join(' '):
"problem test javascript css pc"
My current code:
document.addEventListener('keydown', (event) => {
let count =…
SantGT5
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votes
1 answer
KeyPress or keyup not firing
ok i have a c# 2017 net net windows form frmFS the KeyPress, KeyDown or Keyup are not firing.
I created a new project with select the events for keypress, keydown and keyup (put a messageboc.show("bla") in each function it works but my current…
Lee Hopkins
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votes
1 answer
I want to know how many time I using "backspace" on VB.NET
In this RichTextBox I want to know how many times is used the "Backspace" key on keyboard. So far I have already used this code, but something is wrong. This is the scenario: when pressing Enter, a MessageBox will show how many times has the…
Esang
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votes
3 answers
c# Measuring interval between keyboard keydown and keyup?
I want to measure time (seconds) when a user presses the right arrow key on the keyboard and pick it up.
I have researched about this and find some page but there is not a good answer.
How can I measure this time?
my code
I define a List in top of…
saedbfd
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votes
1 answer
Pygame drawings only appear once I exit window
I've created a rect, using Pygame display but it only appears
in the Pygame window when I exit the window.
Have I done something wrong with my game loop?
I'm trying to set keydown events but it's not
registering in the game loop. Maybe it's…
Mary Caroline
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votes
1 answer
How can I respond to a keyboard chord and replace the entered alpha key with a special one?
I want to, in a textbox on a WinForms app using C#, replace certain keyboard chords with special characters. For example, if the user enters "Ctrl+A", I want to insert into the textbox the character "á"; if the user enters "Ctrl+Shift+A", I want to…
B. Clay Shannon-B. Crow Raven
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votes
1 answer
Start thread with keydown and stop it by releasing it (keyup)?
So im trying to operate threads with key events, I managed to make them start by hitting key E and R( two thread), but i can't stop them by realeasing keys, keyup event doesnt work for some reason...
(after starting, stopping i would like to restart…
Aron_t
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