keydown

问题 I'm using Flash Pro CS6. I created a fla project and put in a ComboBox. Then i place following code in action: import flash.events.KeyboardEvent; this.stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown); this.stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp); function onKeyDown(e:KeyboardEvent) { trace("Keydown :" + e.charCode); } function onKeyUp(e:KeyboardEvent) { trace("Keyup :" + e.charCode); } both event work fine at the beginning but when i change the ComboBox value, the event

问题 I use following code to detect all key events in a WinRT app page: Window.Current.CoreWindow.KeyDown += CoreWindow_KeyDown; ... private void CoreWindow_KeyDown(CoreWindow sender, KeyEventArgs args) { //Handle key event } But the Alt (Menu in the VirtualKey enumeration) key does not trigger the CoreWindow.KeyDown event. It does also block any other key to trigger the event while pressed. Anyone know how to detect the Alt keydown event on a global page level in a WinRT app? 回答1: It seems to be

问题 I have an asp.net form with two textboxes and one button. I have implemented the code to fire the click event of the button on enter key press. <asp:LinkButton ID="statementSearchButton" runat="server" OnClick="GetSearchResults" class="enterButton"> </asp:LinkButton> $(document).keydown(function (event) { if (event == undefined) { event = window.event; } if (event.keyCode == 13) { $('.enterButton').focus(); $('.enterButton').click(); } }); This works fine in IE and Firefox but not in Chrome.

问题 I'm Trying to make app send a pulse to a relay. I got it done with a Button_click, but now I want to do it with any keystroke. What Can I use for this? I read about KeyDown but I don't really know how to integrate it, Any help would be much appreciated. Thank you in advance! Here is how my code looks like: private void Button_Click(object sender, RoutedEventArgs e) { if (relay_state == 0) { relayPin.Write(GpioPinValue.Low); relay_state = 1; } else if (relay_state == 1) { relayPin.Write

问题 I am trying to control google earth using the arrow keys, however, I want to do this with applescript. Essentially this code should work and I'll tell you what it actually does. tell application "System Events" delay 3 key down 124 #Value of key right delay 3 key up 124 end tell This code should wait for me to go to google earth, then it will hold the right arrow key for 3 seconds. However, it just hits 'a'. I saw some recommendations to do the following: key down (key code 124) This sort of

问题 I am trying to create two synchronized textboxes using windows forms but I seem to be running into multiple problems. Maybe you guys can help me make things a little more efficient for me. As you can see, there isn't a problem for the enter key, because I've taken care of that. I see a special symbol when I hold the shift key Pressing the backspace adds a new symbol to the line. Simultaneous pressing of the back key doesn't remove or add(the new symbol) more than once. I assumed the back key

问题 I am trying to scroll to 2 different elements in a keydown event, 1st element on the first press, 2nd element on second press, and repeat the event after every 2 presses (or hits). I created a JSFiddle demo, linked below. FIDDLE As you can see, it will not scroll to the bottom element on the second press (or hit). The only thing I can think of is using something else besides ".offset().top" for the second event. But if some of you JS gurus look at my code you may see the bug or perhaps

问题 I have tried to fire onkeydown, onkeypress and onkeyup events on file input(e.g. when the element is on focus and a key is pressed the events are not fired), but they doesn't work in Opera. Firing 'click' with jQuery , doesn't work too (e.g. $('#myFileinput').Click() or $('#myFileinput').trigger('click')). Is there a way to trigger these events in Opera ? Here is my code: <input type="file" class="foo" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.0/jquery.min.js"></script>

问题 In this application, I need to be able to stop the response from a key which is held down in order to prevent unnessecary data from entering the output. The problem I'm having is, using the methods in my code below does prevent the keys from repeating, but it also stops them from being responsive enough - as the users are hitting the keys very quickly. I'm not sure if it's my hardware, api restriction or a problem with my code, but the routines I have below do not simply come round fast

问题 I need to intercept the browser-reload-functionality in Safari (I know this is usually not something one should do, but in my case this makes sense). For Windows I just do this: $(document).keydown(function(event) { if ( event.which == 116 ) { restart(); return false; } }); Do I need to use a JQuery Plugin to capture two Keys at the same time or is this already implemented in JQuery in some form? Also, are the keycodes under Mac the same as they are under windows? ("Command" being the keycode