event-handling | 易学教程

Meteor JS: How should I bind events to the window in Meteor?

阅读更多关于 Meteor JS: How should I bind events to the window in Meteor?

问题 I am trying to detect a mouseup outside of a window in Meteor. I tried this, but window doesn't seem to work: Template.layout.events({ 'mouseup window' : function(e) { console.log("mouseup"); } }); How should I bind events to the window in Meteor? 回答1: The code snippet below will bind the event handler when your template is created and unbind when your template is destroyed. Should give you the behavior you're looking for. var layoutMouseUpHandler = function(e) { console.log('window.mouseup')

Register EventHandler in CQRS

阅读更多关于 Register EventHandler in CQRS

问题 I am trying to model purchasing domain using CQRS & DDD, i know that i raise events in domain but i don't know where to Register them when i am using commands. Should event handlers be registered in command handlers? or maybe i misunderstood something. this is my process can you help model it right way? Finalize purchase order Command is given, than command handler finalizes order (gets order from repository, changes its state and saves back to db), order finalized event occurs in domain

Java ShouldNotReachHere error

阅读更多关于 Java ShouldNotReachHere error

问题 I am trying to change the background color of the source but java gives me internal fatal error occurred message. can you tell me what I am doing wrong. import java.awt.*; import java.awt.event.*; import javax.swing.*; class ButtonPanel extends JPanel { private JButton yellowButton = new JButton("Yellow"); public ButtonPanel()//constructor { //setLayout is a method in JPanel that is called in this constructor setLayout (new FlowLayout(FlowLayout.LEFT)); add(yellowButton); actions

Shutdown event for console application C#

阅读更多关于 Shutdown event for console application C#

问题 How can i know when my C# console application will be stopping? Is there any event or like that? Thanks! 回答1: Use ProcessExit event of the application domain class Program { static void Main(string[] args) { AppDomain.CurrentDomain.ProcessExit += new EventHandler(CurrentDomain_ProcessExit); } static void CurrentDomain_ProcessExit(object sender, EventArgs e) { Console.WriteLine("exit"); } } 回答2: Handling the event System.Console.CancelKeyPress might help you. MSDN explains it how to handle

wxWidgets - Event table vs Connect()?

阅读更多关于 wxWidgets - Event table vs Connect()?

问题 I have just started learning wxWidgets, version 3.0, with C++. I have noted, that event handling in wxWidgets is done by Event tables. But one tutorial also mentioned Connect() - actually it just said : " this tutorial will be using event tables, not Connect() " . I would like to know, what is the philosophy behind Event tables and behind Connect() ? What is the difference, when is one more suitable than the other... Thank you. 回答1: First, don't use Connect() which was superseded by Bind()

How do I change link-text in Wicket?

阅读更多关于 How do I change link-text in Wicket?

问题 I created a link with static text. That works fine but now I also want to change the text when you click the link. I got as far as this: add(new Link("doAnything") { @Override public void onClick() { // change the text! // this.modelChanging(); // this.detach(); } }); I hope you can give me some easy advice - I'm really new to this :) Best regards Elias 回答1: The HTML: <html><head></head><body> <wicket:panel> <a href="" wicket:id="link"> <wicket:container wicket:id="label" /> </a> </wicket

ScalaFx: Event Handler with First Class Function

阅读更多关于 ScalaFx: Event Handler with First Class Function

问题 i try to write an event handler in a scalaFx app. I found followin solution: import scalafx.scene.control.ListView import javafx.scene.input.MouseEvent import javafx.event.EventHandler ... val list = new ListView[String] { onMouseClicked = new EventHandler[MouseEvent] { override def handle(event: MouseEvent) { doSomething(event) } } } But this seems to be very Java-style boilerplate code. Is there a way to do this with a first class function like this? onMouseClicked = (event: MouseEvent) =>

How can jQuery's click() function be so much faster than addEventListener()?

阅读更多关于 How can jQuery's click() function be so much faster than addEventListener()?

问题 I'm sure we've all seen the site for vanilla-js (the fastest framework for JavaScript) ;D and I was just curious, exactly how much faster plain JavaScript was than jQuery at adding an event handler for a click. So I headed on over to jsPerf to test it out and I was quite surprised by the results. jQuery outperformed plain JavaScript by over 2500% . My test code: //jQuery $('#test').click(function(){ console.log('hi'); }); //Plain JavaScript document.getElementById('test').addEventListener(

Android - How to set a named method in button.setOnClickListener()

阅读更多关于 Android - How to set a named method in button.setOnClickListener()

问题 Most samples that I see appear to use an anonymous method in a call like button.setOnClickListener(). Instead, I'd like to pass in a method defined on the Activity class that I'm working in. What's the Java/Android equivalent of the following event handler wiring in C#? Button myButton = new Button(); myButton.Click += this.OnMyButtonClick; Where: private void OnMyButtonClick(object sender, EventArgs ea) { } Essentially, I'd like to reuse a non-anonymous method to handle the click event of

keyDown doesn't work swift

阅读更多关于 keyDown doesn't work swift

问题 That's my code: override func keyDown(theEvent: NSEvent) { super.keyDown(theEvent) switch theEvent.character { case NSLeftArrowFunctionKey: println(1) case NSRightArrowFunctionKey: println(2) case NSDownArrowFunctionKey: println(3) case NSUpArrowFunctionKey: println(4) default: break } } As you can see, I try to recognize if one of arrow buttons was pressed, but it never works. Even the function keyDown never seems to be called. That's what is written in viewDidAppear , if this can help you