event-handling

Does jQuery dispose events automatically on window unload

For example on a page I have $(document).ready(function() { $('#some-element').click(function() { // do something.. }); }); Do I also need to add the unbind code - or will jQuery automatically do this for me? $(window).unload(function() { $('#some-element').unbind(); }); ...

UITouch nil in touchesMoved with light tap-slide

I have a view object that I can tap and get a valid touch in touchesMoved: - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; If I lightly tap while sliding the object, touchesBegan fires and I call touchesMoved, as before, but this time touch in touchesMoved is nil. An...

Are Event Handlers processed Asynchronously?

In VB .NET, when you call RaiseEvent X(), is the function that handles the event X processed asynchronously or synchronously. I was under the impression that RaiseEvent and the processing of the event were Synchronous unless created explictly on another thread. I've been told otherwise though. ...

which of the following is better for eventhandling C#

WOW remind me never again to use 50+lines of java-like constructs when this can be done so easily in C# with implicit casting ...

C# - How to trigger opacity event when form loses focus?

Purpose is to have the opacity event trigger when the form loses focus. The form has a setting for STAY ON TOP. The visual effect would be to click on a possibly overlapping window, and yet the form when not focused on would stay on top, but in the corner slightly transparent, keeping it within easy access, but providing visibility to th...

C# EventHandler Beautiful Code (How To?)

Hi, I admit, it is kind of tiny, but I am looking for better ways to do the following code blocks. They should be self explaining... private void listBoxItem_PreviewMouseDown(object sender, MouseButtonEventArgs e) { var listBoxItem = sender as ListBoxItem; if (listBoxItem != null) { var clickO...

Determine if an event has been attached to yet

I have two objects - one that contains some code with will fire an event, and one that contains the handler for that event. I can't "AddHandler" in the Load of the first object, because an instance of the second object doesn't exist yet. When I raise my event, I want to check to see if a copy of object2 has been instantiated (easy to do)...

Where to put GUI based start-up code in a Blackberry App?

I'd like to know the proper place to put GUI based sequential start-up code in my Blackberry app. In main(), I create MyApp and enterEventDispatcher() I have UiApplication (MyApp) In the MyApp CTOR: - I create a MainScreen (MyMain) - I call pushScreen() on MyMain When the event dispatcher starts, is there an event I can listen for in ...

Capture KeyUp event on form when child control has focus

I need to capture the KeyUp event in my form (to toggle a "full screen mode"). Here's what I'm doing: protected override void OnKeyUp(KeyEventArgs e) { base.OnKeyUp(e); if (e.KeyCode == Keys.F12) this.ToggleFullScreen(); } private void ToggleFullScreen() { // Snazzy code goes here } This works fine, unless a c...

Events in MDIParents Forms and Childs

How can I Handle MDIParent Form events in childs forms? for example in Parent Form I Have a option "search on child grid" and when that button got clicked, in the child form one row on grid get focused. Im using C# 3.5 Windows Forms Application Thanks in Advance ...

C# to VB.NET Event Conversion

Porting an application from C# (1.1 framework) to VB.NET (3.5 framework), and I have this one last event based issue I cannot get my head around. This is the original C# code public delegate void SpecialEventHandler(object sender,SpecialEventArgs e); public event SpecialEventHandler SpecialEvent = null; _SpecialLogWriter SpecialWrite...

jquery tablerow click function question

Hi, I have a function that allows users to edit a row in a table by opening the data in a modal. Right now the whole row will fire the modal. What I want is to isolate the last td that contains a link that fires a function that readies the data for processing. What happens is that when that last td is clicked the modal opens AND the r...

Handling click events on z-index'd layers

I have 2 z-index layers in a map application I'm building. I have a problem when I click on the layers to zoom in. The click handler is on the underlying z-index layer and I don't want it to fire when a control in the overlying layer is clicked. The problem i have is that the event gets raised no matter what but the originalTarget pro...

ASP.net: How to handle events from dynamically added controls?

So I have a number of user control dynamically added to a page, and user interaction with these dynamically added user controls need to be handled by the control's parent. Is this what is referred to as "event bubbling"? How do I do that in VB? Thanks in advance. ...

'chain' a series of functions together in actionscript 3

Hi All, I'm calling a function and adding a listener for when the function returns some data. when the data is returned i need to call another function and so on. Is there an easy way to 'chain' these functions together so that the first one fires - waits for the listener then fires the second one creating a listener for that and so on...

Making a Webservice Method Asynchronous in C#/Winforms

Lets say I am calling some web service method that I do not control. This method takes a long time to run, and whoever developed the web service did not think to include a asynchronous version. What is the best way to create an asynchronous wrapper for such a method in C#/winforms? At the moment I am using a ThreadPool to run the webs...

shutdown, reboot, hibernate notification in leopard using python

i am developing an application using python that requires to be notified when the system is shutting down, rebooting, hibernating etc. how can I do that? Please shed some light on this. any hints in Objective C or applescript will be good enough. Thanks in advance. ...

C#: Thread-safe events

Is the implementation below thread-safe? If not what am I missing? Should I have the volatile keywords somewhere? Or a lock somewhere in the OnProcessingCompleted method? If so, where? public abstract class ProcessBase : IProcess { private readonly object completedEventLock = new object(); private event EventHandler<ProcessComp...

asp.net: send an object's event from a UserControl to its Parent

Hi, I have a User class with functions to Login() and Logout() and GetData(). There's a UserChanged event, it fires when either of these functions are called. I have UserControls on my Default.aspx (they're added dynamically). I have a UserControl named Login.ascx. It provides the functionality to use the User class: you can Login / L...

How do I add Page Events for ASP.NET in Visual Studio 2008

This is a bit of a Visual Studio question. I feel with all the helpful Intellisense there should be something to assist but I can't seem to find it. I made a page with a codebehind in ASP.NET C# in VS2008 and it autogenerates a PageLoad event method, of course. Well, what if I want to add methods for more events besides PageLoad? I w...