keypress

问题 As per this previous link (How to send keyboard outputs) Java can simulate a key being pressed using the Robot class. However, how could a combination of key presses be simulated? If I wanted to send the combination "alt-123" would this be possible using Robot? 回答1: The simple answer is yes. Basically, you need to wrap the keyPress/Release of the Alt around the other keyPress/Release s public class TestRobotKeys { private Robot robot; public static void main(String[] args) { new TestRobotKeys

问题 I want to simulate a Keypress event using the Javascript Console. I see lots of answers using an input element. I don't want to use an input element. I just want to paste some code into the Javascript console and have a keypress event simulated(specifically the back space button). Answers using jQuery are welcome. 回答1: jQuery has a .keypress method accepting no arguments that simulates a keypress. $("#target").keypress(); Will trigger a keypress on #target If you'd like to also select which

问题 I'm working on a program with DataGridViews . In one DatagridView there is a DataGridViewTextBoxColumn , which is enabled to be edited by the user. When the user is done with typing the numbers into it, he presses ENTER on the keyboard. Now the DataGridView does all its Events , and after all Events , the last thing is the problem. Everything is done, and Windows is going to Select the next DataGridViewRow , and I'm not able to prevent this. I tried if (e.KeyData == Keys.Enter) e

问题 What I was expecting from a multiselect behaviour is to behave just as normal as long as no special key is pressed. I mean, if you have a row selected and click on another with no other key pressed, then it should select the new one and deselect the old row. Well, jqGrid’s standard options lets you choose between always regular behaviour, or always multiselect. You can’t have multiselect only when a special key is pressed. Is there a way I can achieve this? 回答1: jqGrid has several selection

问题 What I was expecting from a multiselect behaviour is to behave just as normal as long as no special key is pressed. I mean, if you have a row selected and click on another with no other key pressed, then it should select the new one and deselect the old row. Well, jqGrid’s standard options lets you choose between always regular behaviour, or always multiselect. You can’t have multiselect only when a special key is pressed. Is there a way I can achieve this? 回答1: jqGrid has several selection

问题 My WPF application handles keyboard presses and specifically the # and * character as it is a VoIP phone. I have a bug though with international keyboards, and in particular the British english keyboard. Normally I listen for the 3 key and if the shift key modifier is down we fire off an event to do stuff. However on the British keyboard this is the '£' character. I found that the UK english keyboard has a dedicated key for '#'. Obviously we could just listen for that particular key, but that

问题 I need to press Ctrl + A keys using Selenium WebDriver. Is there any way to do it? I checked the Selenium libraries and found that Selenium allows key press of special and functional keys only. 回答1: One more solution (in Java, because you didn't tell us your language - but it works the same way in all languages with Keys class): String selectAll = Keys.chord(Keys.CONTROL, "a"); driver.findElement(By.whatever("anything")).sendKeys(selectAll); You can use this to select the whole text in an

问题 I'm using a keypress listener eg.. addEventListener("keypress", function(event){ } However, this doesn't seem to detect a backspace which erases text... Is there a different listener I can use to detect this? 回答1: KeyPress event is invoked only for character (printable) keys, KeyDown event is raised for all including nonprintable such as Control , Shift , Alt , BackSpace , etc. UPDATE: The keypress event is fired when a key is pressed down and that key normally produces a character value

问题 I'm using a keypress listener eg.. addEventListener("keypress", function(event){ } However, this doesn't seem to detect a backspace which erases text... Is there a different listener I can use to detect this? 回答1: KeyPress event is invoked only for character (printable) keys, KeyDown event is raised for all including nonprintable such as Control , Shift , Alt , BackSpace , etc. UPDATE: The keypress event is fired when a key is pressed down and that key normally produces a character value

问题 How can I make the onKeyPress event work in ReactJS? It should alert when enter (keyCode=13) is pressed. var Test = React.createClass({ add: function(event){ if(event.keyCode == 13){ alert('Adding....'); } }, render: function(){ return( <div> <input type="text" id="one" onKeyPress={this.add} /> </div> ); } }); React.render(<Test />, document.body); 回答1: I am working with React 0.14.7, use onKeyPress and event.key works well. handleKeyPress = (event) => { if(event.key === 'Enter'){ console.log