events

What is C's analogy to LabVIEW's Event Structure?

One programming construct I use quite a bit in LabVIEW is the Event Structure. This gives me the benefit of not having to needlessly waste CPU cycles via polling but only perform actions when an event I'm interested in is generated. As an experienced LabVIEW programmer with a decent understanding of C, I'm curious how one would go ab...

WPF create a list of controls that can be scrolled via the mouse but still remain functional

I have a list of controls that I am displaying via a WrapPanel and it horizontally oriented. I have implemented a "Click and Drag" scrolling technique so that the user scrolls with the mouse via clicking and dragging. Like so: <Canvas x:Name="ParentCanvas" PreviewMouseDown="Canvas_MouseDown" MouseMove="Canvas_MouseMove"> <WrapPanel>...

Jquery event triggering twice for no reason

I'm having a problem with a simple form where i'm attempting to fire an ajax request when someone types something. After debugging I'm left with an alert when the event is fired but it shows up twice, irrespective of the browser. (Ignore the 'rel' attribute in the input tags, that's for something else, unless you think its the rel attrib...

Nmock2 and Event Expectations

Im in the process of writing a test for a small application that follows the MVP pattern. Technically, I know I should have written the test before the code, but I needed to knock up a demo app quick smart and so im now going back to the test before moving on to the real development. In short I am attempting to test the presenter, howe...

Are singleton network event processors okay?

Suppose you have a system on the other side of a network that sends events and data that needs to be cached to some intermediate broker. Instead of giving every component of your application that needs to be informed of such events a new subscription to the broker, I decide for performance and simplicity (the third party library that ha...

Creating/Handling events for controls when added during runtime.

I am using a Repeater which contains a placeholder. The placeholder is bound to my database and each ItemTemplate contains 1-6 radiobuttons depending on what the database returns. What I need to do is somehow keep track of which one of the radiobuttons is checked for each question so I can write the user's answers to the database when t...

Using removeEventListener on document does not work?

Hi, take a look at this code: $(document).ready(function() { document.getElementById(sliderId).onmousedown = sliderMouseDown; }); function sliderMouseDown() { document.onmousemove = sliderMouseMove; document.onmouseup = sliderMouseUp; } function sliderMouseMove() { $('#test').html("sliding"); } function sliderMouse...

Firefox drags div like it was an image, javascript event handlers possibly to blame

Hi, I'm using this HTML,CSS and Javascript code (in one document together if you want to test it out): <style type="text/css"> #slider_container { width: 200px; height: 30px; background-color: red; display:block; } #slider { width: 20px; height: 30px; background-color: blue; display:block; position:a...

How do I stop a routed event from triggering on specific places in XAML?

I have the following situation: A stackpanel contains a number of elements, including some that are contained in a GroupBox. So something like this: <StackPanel x:Name="stackpanel" Background="White"> <TextBlock Text="TextBlock"/> <TextBlock Text="Another TextBlock"/> <!--plus a load of other elements and controls--> <...

Cisco IP Phone Call Manager handle events

I 'm new on cisco IP Phones. I have a cisco call manager system also a 7970 Ip phone. The phone cominicates with Cisco Call Manager application. I want to listen events when user logon and send some commands to phone., Is there any idea about this task? Is there a way to got events from cisco call manager or i have to listen up the por...

VB.net Net after load event?

I need some way of knowing when a form has finished loading. My reasoning is I have a 2nd form that is loaded when this form loads. The code for this is called from form1.load. Form2 is currently being displayed behind form1 as I am guessing form1 calls an activate or similar at the end of the load so any Activate, BringToFront etc ...

Have Button re-appear immediately after clicking button in ListView row

I have 4 buttons on a page. Each button opens a modal window and let’s the user input data in a form. When the user hits the save button in the modal, a ListView appears on the page with the submitted data. The button the user clicked to open the modal window is set to visible=false, so it’s gone when the row is added to the ListView. ...

Events fired when you change the contents of a control in Silverlight

Assuming I change the contents of a control using a XamlReader and add the UIElement to the container of a control, what events are supposed to fire? There are times where the SizeChanged will fire, LayoutUpdated changing.. though there are other times where neither of these occur despite having changing the contents of a control. In my...

C# timer getting fired before their interval time

Hi, We're getting following problem while using System.Threading.Timer (.NET 2.0) from a Windows service. There are around 12 different timer objects.. Each timer has due time and interval. This is set correctly. It is observed that after 3 to 4 hours, the timers start signaling before their interval elapses. For example if the timer ...

how to set a polyline on google maps every time when i click twice(make two markers) on maps,

this is my code : thanks <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd"&gt; <html xmlns="http://www.w3.org/1999/xhtml" > <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta name="viewport" content="width=device-width,minim...

Inspect bound events attached to element in Jquery

Hi all, I am attempting to inspect the events bound to an element using the following syntax $(item).data("events"); I have also tried $(item).data("events").change; I know for certain that the change event is bound and if I do this $(item).attr("change") I can see that an attribute with that name has been registered. I am...

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...

Error when creating JFrame from JFrame

Hi, I have an application that is works fine and the JFrame for it is launched in the constructor of a GameInitializer class which takes in some config parameters. I have tried to create a GUI in which allows the user to specify these config parameters and then click submit. When the user clicks submit a new GameInitializer object is cr...

calling invokeAndWait from the EDT

Hi, I have a problem following from my previous problem. I also have the code SwingUtillities.invokeAndWait somewhere else in the code base, but when I remove this the gui does not refresh. If I dont remove it the error I get is: Exception in thread "AWT-EventQueue-0" java.lang.Error: Cannot call invokeAndWait from the event dispatcher...

Make process run on non EDT (event dispatch thread) thread from EDT

I have a method running on the EDT and within that I want to make it execute something on a new (non EDT) thread. My current code is follows: @Override public void actionPerformed(ActionEvent arg0) { //gathering parameters from GUI //below code I want to run in new Thread and then kill this thread/(close the JFrame) new GameInitial...