event-handling

From api of pygame, it has: event type.MOUSEBUTTONDOWN, MOUSEBUTTONUP, MOUSEMOTION But there is no way to distinguish between right, left clicks? if event.type == pygame.MOUSEBUTTONDOWN: print event.button event.button can equal several integer values: 1 - left click 2 - middle click 3 - right click 4 - scroll up 5 - scroll down Instead of an event, you can get the current button state as well: pygame.mouse.get_pressed() This returns a tuple: (leftclick, middleclick, rightclick) Each one is a boolean integer representing button up/down. You may want to take a closer look at this tutorial , as

From a memory point of view (remove an added handler after utilization, etc.), is WithEvents and Handles usage preferable to RemoveHandler and AddHandler ? A related Stack Overflow question is Event handler and memory leaks . It depends on what you're trying to achieve. If you have several event handlers which must handle events for various controls during the lifetime of a form/object then WithEvents and Handles is the easiest way to go. The language will do all of the dirty work for you in terms of setting up the event. On the other hand, if you tend to disconnect from events during the

I am writing a WPF application that has two windows. I have a MainWindowViewModel that holds two more view models: AllTagsViewModel and PlotViewModel . public AllTagsViewModel AllTagsViewModel { get; private set; } public PlotViewModel PlotViewModel { get; private set; } At the moment, I'm using this solution as a click handler in the main window: private void LaunchPlotWindow_OnClick(object sender, RoutedEventArgs e) { if (PlotWindow.GlobalInstanceCount == 0) { PlotWindow plotWindow = new PlotWindow(); PlotViewModel context = GetViewModel().PlotViewModel; plotWindow.DataContext = context;

I have an application that has a main form and uses an event handler to process incoming data and reflect the changes in various controls on the main form. This works fine. I also have another form in the application. There can be multiple instances of this second form running at any given time. What I'd like to do is have each instance of this second form listen to the event handler in the main form and update controls on its instance of the second form. How would I do this? Here's some sample code. I want to information from the_timer_Tick event handler to update each instance of

We want our Go application to listen to the data changes on a collection. So, googling in search for a solution, we came across MongoDB's Change Streams . That link also exhibits some implementation snippets for a bunch of languages such as Python, Java, Nodejs etc. Yet, there is no piece of code for Go. We are using Mgo as a driver but could not find explicit statements on change streams . Does anyone have any idea on how to watch on Change Streams using that Mgo or any other Mongo driver for Go? The popular mgo driver ( github.com/go-mgo/mgo ) developed by Gustavo Niemeyer has gone dark

After the last library update (my jar files dates is 22. Oct.) The event handling does not work as expected. For example the SwipeEvent in SwipeableContainer and the ActionListener in FloatinAutton works. But the button and MultiButton does not. I debuged it. Does not fall into any EventDispatcher instance that includes relevant listener. So the handler code defined in the form (multiButton.addActionListener(e -> {...) is not called anymore. This phenomenon can be reproduced by recompiling the KitchenSink app and running it in the simulator. And the downloaded apk does not work correctly. The

Here I added a model to my viewmodel... public dal.UserAccount User { get { return _user; } set { _user = value; RaisePropertyChanged(String.Empty); } } I handle property change event... public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged(string propertyName) { if (this.PropertyChanged != null) this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } This is the binding i use. <TextBox Text="{Binding User.firstname, Mode=TwoWay, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" /> Problem is propertychange event is not

What am I missing here? Please note: jQuery MOBILE is used DEMO using preventDefault DEMO using return false If I use preventDefault the page loads as if I had just links and no script, when I change to return false (which I always used to use on the plain JS onclick event handler), it works as expected. I have already looked through other posts and all use .click and all suggest preventDefault. $(document).ready(function() { $("#leftdiv a").on("click",function(e) { $("#rightDiv").load(this.href); return false; // I was sure preventDefault would work }); }); HTML <div id="leftdiv" style=