event-handling

问题 I'm trying to remove an eventlistener on (in this specific case) a HorizontalList. The list is initialized with the property itemRollOver="playPreview(event)" I'd like to remove this eventListener by switching state and stating something like: <mx:SetEventHandler target="{horList}" name="itemRollOver" handlerFunction="null" /> This doesn't seem to work. The event is still handled and playPreview(event:ListEvent) is still called. How to properly do this? (I know I can do it in Actionscript,

问题 I have a <textarea> and a <button> inside of a <form> . When submitted, I call e.preventDefault() and submit the form via AJAX . From there I return the query and PREPEND at information inside of a <div> at the top of this list. Also, I have given each item the ability to be deleted, which is instant on the client side but also submits a form via AJAX to be completely removed. This is sort of working. I am able to: Have a blank screen (no items added), create one and delete it no problems

问题 i have an separate class, let's say class2, with a dictionary. i'd like it to fill the dictionary with values. public class Class2 { public Class2() { public Dictionary<string, string> someDictionary = new Dictionary<string, string>(); //I DON"T KNOW HOW TO CREATE AN EVENTHANDLER HERE FOR THE DICTIONARY //how do i create the eventhandler if someDictionary changes? } } let's say in class1, i have a listview that i'd like to fill with the dictionary values, but change them as the dictionary in

问题 Following is a program that displays a black screen with a messgage ALARM ! : import java.awt.*; import javax.swing.*; import java.awt.event.*; public class displayFullScreen extends Window { private JLabel alarmMessage = new JLabel("Alarm !"); public displayFullScreen() { super(new JFrame()); setLayout(new FlowLayout(FlowLayout.CENTER)); alarmMessage.setFont(new Font("Cambria",Font.BOLD,100)); alarmMessage.setForeground(Color.CYAN); add(alarmMessage); Dimension screenSize = Toolkit

问题 I'm pretty new to JQuery, and this is probably not the best use case to learn on, but it's the project I have to do. Basically I have a form, with a set of inputs where the values of the child inputs will be changed based on the values in the parent. (Using Ajax to retrieve the data sets). Essentially: Item List -> Available Sizes -> display Price for selected size This is all pretty much straight forward, and I have something functioning for a single set of grouped inputs. But I'm stuck on

问题 How can I get a reference to the click handler of an element in JQuery? Here is what I am trying to do: Store the click handler, Change the click handler for the next click, Restore the original click handler var originalClick = $(settings.currentTarget).click; $(settings.currentTarget).off("click"); $(settings.currentTarget).click(function (e) { e.preventDefault(); settings.model.modal.close(); $(settings.currentTarget).off("click"); $(settings.currentTarget).click(originalClick); }); The

问题 I am working on small flash game. The game contains 20 levels and main menu. The transition between levels is made by deleting every object on the frame and also all event listeners. Then the code adds objects from the next level... Catching and the removing event listeners is done by this code: override public function addEventListener(type:String, listener:Function, useCapture:Boolean=false, priority:int=0, useWeakReference:Boolean=false):void { super.addEventListener(type, listener,

问题 In the following example, how can I get: the button to be "disabled-grey" the message to say "working..." while the work is being done, not after the work is done? XAML: <Window x:Class="TestIsEnabled8938.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <StackPanel Margin="10" HorizontalAlignment="Left"> <Button x:Name="Button_Refresh" HorizontalAlignment="Left" DockPanel

问题 From the smartwatch I'd like to intercept the event of the connection to a smartphone. This is automatically managed by Android and Android Wear so I need to get this event from my app running on the watch. I found out this on WearableAPI to be notified without polling Wearable.NodeApi.getConnectedNodes public class MyService extends WearableListenerService { @Override public void onPeerConnected(Node peer) { Log.i("my wear service", "connected"); super.onPeerConnected(peer); // here I would

问题 I used the solution located at stackoverflow:event-fired-when-item-is-added-to-listview to utilize interface INotifyCollectionChanged in CodeBehind. Is there a way to add this EventHandler within the XAML? Essentially, I want this line defined in XML: ((INotifyCollectionChanged)lbFiles.Items).CollectionChanged += lbFiles_SelectionChanged; 回答1: You should just be creating the CollectionChanged event on the collection that is bound to your ListBox/ListView etc, accessing controls derictly from