events

问题 I am working on an HTML5 Canvas game, and the level needs to pre-load some images (and eventually other data such as audio files, too). I am planning on having all of these images stored in an array, or a container object. What I need to do is find a way to wait until all of these images are downloaded completely before continuing in the game. This does NOT happen when the page is opened. This happens deep within the running script, and the images are dynamically loaded. The idea is to

问题 I currently have a NotifyIcon as part of a Windows Form application. I would like to have the form show/hide on a double click of the icon and show a balloon tip when single clicked. I have the two functionalities working separately, but I can't find a way to have the app distinguish between a single click and double click. Right now, it treats a double click as two clicks. Is there a way to block the single click event if there is a second click detected? 回答1: There are 2 different kinds of

问题 I have a dynamic WPF input form, whereby a list of input text boxes is displayed based on the contents of a collection of data. The text of each text box is bound to a Value field in the data, when any of these fields changes I am using firing a Command which then executes a calculation in a script (also dynamically provided) using the values of the input field. My question is how I can get the Command to execute after the field value has changed. At the moment I am firing the Command based

问题 I have a class that contains an ObservableCollection of another class. I want to be notified if one of the class members is changed, because I need to do some calculating in the MediaCollection class. So I added an event to that class: public event PropertyChangedEventHandler PropertyChangedEvent; which is called in this collection class: public class MediaCollection : INotifyPropertyChanged { private List<MediaEntry> ModifiedItems = new List<MediaEntry>(); private ObservableCollection

问题 I am able to add events fine. addEventListener("onStateChange", "handleStateChange"); but when trying to remove the event, it does not. removeEventListener("onStateChange", "handleStateChange"); handleStateChange is still being called whenever I pause/play the video. Has anyone run into this and have a solution? or is there a bug on the API? 回答1: I think the issue is that the player object of the YouTube API has no removeEventListener method. Keep in mind that when you call addEventListener ,

问题 I had a problem setting up some fragment menu items in the ActionBar and I found a way to solve it, but I don't understand why it worked. I wanted to change the visibility in a menu item right after I inflated it from a menu xml file in onCreateOptionsMenu method. The code seems to work fine, but there's no visible effect. I solved the problem inflating the menu in onCreateOptionsMenu method but changing the visibility of it in onPrepareOptionsMenu method. What I want to know is why changing

问题 This should be simple enough, but every time I try I end up with a different issue. I am trying to move an image around the screen using mouse events such as mousedown, mouseup, mousemove, clientX and clientY. I am then trying to apply it to the image using absolute positioning. I thought the below code would work as I get the coordinates on the initial click, and then the idea was to update them with mouse movement, but this does not work. var image; var dog = document.getElementById("dogPic

问题 I am using Windchill 10.0 M030. I have created a windchill service that captures some actions. I am done with capturing the delete, checkin, and state change events, but I don't know how to capture the revision event of an object. Can someone help me out? Some example code snippets would be helpful. The events that are working fine are the following: public void notifyEvent(KeyedEvent event) throws RemoteException, WTException { if (event instanceof PersistenceManagerEvent) { notifyEvent(

问题 I am using Windchill 10.0 M030. I have created a windchill service that captures some actions. I am done with capturing the delete, checkin, and state change events, but I don't know how to capture the revision event of an object. Can someone help me out? Some example code snippets would be helpful. The events that are working fine are the following: public void notifyEvent(KeyedEvent event) throws RemoteException, WTException { if (event instanceof PersistenceManagerEvent) { notifyEvent(

问题 Laravel Version: 5.5.* PHP Version: 7.1.* According to the docs https://laravel.com/docs/5.5/notifications it should be super simple to subscribe to Notification events. I've followed the steps in the docs, but my Notifications implement ShouldQueue and they weren't properly populating the event listener. I'm wonder if the issue seems to be in the framework code . Notice that in the framework github (linked right above), that new Events\NotificationSent($notifiable, $notification, $channel,