event-handling

Silverlight: Event Handler Issue

So I have a Grid on a page that has a few UserControls on it. Each UserControl has a MouseLeftButtonDown event registered, as does the Grid. Before i added the event to the grid, the events on the user controls worked fine. But now that i have the event on the Grid, only the grid event fires regardless of where i click. None of the UseCo...

What is a good generic sibling control Javascript communication strategy?

I'm building a webpage that is composed of several controls, and trying to come up with an effective somewhat generic client side sibling control communication model. One of the controls is the menu control. Whenever an item is clicked in here I wanted to expose a custom client side event that other controls can subscribe to, so that I c...

Handle Events Raised by C# COM Object in a Borland C++ Application.

I have spent numerous hours searching and experimenting, but I have not been able to accomplish full interoperability between C# and Borland C++ Builder 6 (notably in handling events in a C++ application that are raised by the C# COM object). I have been able to make calls to a COM object from the C++ application, but I have not been ab...

Handling multiple click event in jQuery where order is important

I am working on a php that application that uses ajax. On all the links where i want to get the link hijacked by jQuery I add the class ajaxlink directly into the link <a class="someclass ajaxlink" href="somelocation1">goto1</a> <a class="someclass ajaxlink" href="somelocation2">goto2</a> <a class="someclass ajaxlink" href="somelocation...

PowerBuilder 11.5 WINFORMS question regarding event handling...

Hi all, I'm having an issue I'd like so get some feedback on. I'm not going to detail the exact issue about how my application functions as it really doesn't matter in this case. I'm using PB 11.5 and have been tasked with converting a Win32 app to WINFORMS. Suppose I didn't like the look of the PB command buttons and wanted to create...

SelectedIndexChanged for programmatically created dropdownlist in ASP.NET fires multiple times.

Consider the following: dim dropdownlist1 as new dropdownlist dim dropdownlist2 as new dropdownlist dim dropdownlist3 as new dropdownlist dropdownlist1.AutoPostBack = true dropdownlist2.AutoPostBack = true dropdownlist3.AutoPostBack = true AddHandler dropdownlist1.SelectedIndexChanged, AddressOf SomeEvent AddHandler dropdownlist2.Sele...

How can I dynamically inject code into event handlers in Delphi?

For debugging / performance tests I would like to dynamically add logging code to all event handlers of components of a given type at run time. For example, for all Datasets in a Datamodule, I need to run code in the BeforeOpen and AfterOpen events to capture the start time, and to log the elapsed time in AfterOpen. I would prefer to d...

Consume windows form events in C++/CLI

How do I add an event handler method to, say a TextBox's TextChanged event ? ...

Javascript Mouseover bubbling from children

Ive got the following html setup: <div id="div1"> <div id="content1">blaat</div> <div id="content1">blaat2</div> </div> it is styled so you can NOT hover div1 without hovering one of the other 2 divs. Now i've got a mouseout on div1. The problem is that my div1.mouseout gets triggered when i move from content1 to content2, because the...

redirect an event in VB.NET

I havea a UserControl1 (in witch I have an Label1) in Form1. I want to catch the MouseDown event from Label and send it like it was from UserControl. I do: Public Class UserControl1 Shadows Custom Event MouseDown As MouseEventHandler AddHandler(ByVal value As MouseEventHandler) AddHandler Label1.MouseDown, value End A...

Alternative to jQuery's .toggle() method that supports eventData?

The jQuery documentation for the .toggle() method states: The .toggle() method is provided for convenience. It is relatively straightforward to implement the same behavior by hand, and this can be necessary if the assumptions built into .toggle() prove limiting. The assumptions built into .toggle have proven limiting for my curren...

Understanding AddHandler and pass delegates and events.

I am using AddHandler to wire a function to a control's event that I dynamically create: Public Delegate Sub MyEventHandlerDelegate(ByVal sender As Object, ByVal e As System.EventArgs) Public Sub BuildControl(EventHandler as System.Delegate) dim objMyButton as new button AddHandler objMyButton.Click, EventHandler ...

RemoveHandlers in the derived class

I use to set WithEvents variables to Nothing in Destuctor, because this will "Remove" all the Handlers associated with Handles keyword. Will this have the same effect for derivated classes? Class A Protected WithEvents _Foo as Button Private Sub _Foo_Click Handles _Foo.Click ' ... some Click action ' End Sub Pu...

Chrome is leaking memory, when jQuery is used on events?

Hi, I'm experiencing an increase of memory usage, when I use the jQuery-eventhandling in Chrome. I've tested it with IE and FF as well, but there I couldn't see a suspicious rise of memory-usage, compared to Chrome. I'm using Chrome version 4.0.223.16 (unfortunately I'm forced to use this version, here) Simple example here. Just scrol...

Strategy for unsubscribing event handlers

In my WPF application I have a View that is given a ViewModel, and when given this View it adds event handlers to the ViewModel's PropertyChanged event. When some action occur in the GUI I remove the View and add another View to the holding container - where this new one is bound to the same ViewModel. After this has happened the old V...

How to identify the source of a text selection event coming from a CompareEditorInput in eclipse?

In my eclipse plugin I have the following code: public class MyHandler extends AbstractHandler { @Override public Object execute( ExecutionEvent event ) throws ExecutionException { ISelection sel = HandlerUtil .getActiveWorkbenchWindowChecked( event ) .getSelectionService() .getSelecti...

javascript error handling

I have a javascript function for checking errors which I am calling on OnClicentClick event of a button. Once it catch a error I want to stop execution of the click event. But in my case it always it always executes the onclick event. Following is my function: function DisplayError() { if (document.getElementById('<%=txtPassw...

Is it OK to set state within Event Raising methods?

I ran across this pattern in the code of a library I'm using. It sets state within the event raising method, but only if the event is not null. protected virtual void OnMyEvent(EventArgs e) { if(MyEvent != null) { EnsureChildControls(); MyEvent(this,e); } } Which means that the state is not set when overriding the met...

How to handle Android SimpleExpandableListAdapter entry selection.

I have created an expandable list in my Android application using the SimpleExpandableListAdapter type. But I'm at a complete loss as to how I detect events when one of the child entries has been selected/clicked. I've tried all the usual OnClickListener/OnChildClickListener etc, but can't seem to find (by experimentation, or half an ho...

Event Handlers Not Getting Called? - wxWidgets

Hello all, I'm working on a program for my C++ programming class, using wxWidgets. I'm having a huge problem in that my event handlers (I assume) are not getting called, because when I click on the button to trigger the event, nothing happens. My question is: Can you help me find the problem and explain why they would not be getting cal...