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• Android Custom View to Activity communication

  - by Blumer

  I have a custom control/view that observes the direction of a gesture within its bounds. I would like to send a different message back to the Activity hosting the View depending on the direction of the gesture. I'm having a hard time determine what the right way to do this is. I would think I could raise a custom event in the control and then stick a listener on the control in the activity, but I cannot find any information on custom events in Android. Any help would be appreciated. Thanks.

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• Why don't the .net 4.0 charting controls work in Visual Studio 2010?

  - by kc

  The .net charting controls are advertised as being built into .net 4.0. However, they do not work in Visual Studio 2010 Pro or Visual Web Developer 2010 Express. I get the error, System.Web.HttpException: Error executing child request for ChartImg.axd. That sounds like the message from .net 3.5 if charting wasn't set up correctly. But the bottom of the same page says, "Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1" Does anyone know why this doesn't work?

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• AS3 Event Bubbling outside of the Scenegraph/DisplayList

  - by Brian Heylin

  Hi just wondering if it is possible to take advantage of event bubbling in non display list classes in AS3. For example in the model of an application where there is a City class that contains many Cars. What methods are there to attach an event listener to a City object and receive events that bubble up from the child Cars. To clarify The City and Car objects are not part of the display list, they are not DisplayObjects. So can bubbling be implemented outside of the display list somehow? As far as I know, this is not possible without manually attaching event listeners to each Car object and re dispatching the event from the City object. Anyone else have a cleaner solution?

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• NuGet: "Unable to load one or more of the requested types"

  - by Joe White

  I installed NuGet into Visual Web Developer 2010 Express, but when I go to Solution Explorer, right-click on a project's "References" folder, and select "Add Library Package Reference", I immediately get this error: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. There's just an OK button, and no way for me to retrieve the additional information it's telling me about. This is a fresh install of NuGet; I've never installed it on this computer before. How can I fix and/or diagnose this error so I can get NuGet to work?

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• How do I pan the contents of a div when the right mouse button is dragged?

  - by Shaunwithanau

  I need a cross browser way of capturing the right mouse click, preventing the default context menu and making it where when the user drags the mouse they can pan the contents of a div. This is largely similar to Google maps in that they will grip the contents and drag to see what they want. No external libraries please. I am already capturing the events, and know that this will prevent default actions: if (evt.preventDefault) { evt.preventDefault(); } else { evt.returnValue = false; } But this doesn't prevent the context menu AFAIK. Edit: I really am unsure about how to prevent the context menu and what the best way to manipulate the scroll bars would be? examples would be great

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• what great software engineers know or aspiring ones should know?

  - by trojanwarrior3000

  I do not mean any particular language or methodology. But basics( one have abstracted from ones experience and interaction with smarter people in this field) one should have including concepts, practical issues, tips/techniques/tricks one should be aware of.For example the lessons or ideas may relate to programming,testing,design,project schedules, that are really useful in daily life of software engineer/developer etc ? This may be a good question because it looks not to specific, however experience of many is better than reading from books.I find discussions much helpful than books.Hope every one will have some lessons/ideas to contribute.please substantiate with atleast one example.

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• Call a function by its name, given from string java

  - by Joao

  Hello, I would like to be able to call a function based on its name provided by a string. Something like public void callByName(String funcName){ this.(funcName)(); } I have searched a bit into lambda funcions but they are not supported. I was thinking about going for Reflection, but I am a bit new to programming, so I am not so familiar with the subject. This whole question was brought up on my java OOP class, when I started GUI (Swing, swt) programming, and events. I found that using object.addActionCommand() is very ugly, because I would later need to make a Switch and catch the exact command I wanted. I would rather do something like object.attachFunction(btn1_click), so that it would call the btn1_click function when the event click was raised. Thank you Joao

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• How can I update an expression in a Runt::Schedule object?

  - by Reid Beels

  Runt provides a Schedule class for managing collections of events, each represented by a temporal expression. The Schedule class provides an update method, cited in the release notes as "allowing clients to update existing expressions". The implementation of this method, however, simply calls a supplied block, providing the temporal expression for the specified event (as shown). # From lib/runt/schedule.rb:61 # # Call the supplied block/Proc with the currently configured # TemporalExpression associated with the supplied Event. # def update(event,&block) block.call(@elems[event]) end How is one expected to use this method to update an expression?

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• Keyboard input for a game in Java

  - by hmp

  I'm writing a game in Java, right now it's Swing + JOGL - a JFrame with a GLCanvas. I handle input using keyPressed etc. events (jframe.addKeyListener(...)) and it doesn't seem to work properly: when I have 3+ keys down at the same time, they don't register properly after the window loses, then regains focus, input stops working completely... What am I doing wrong? Is there a better way of handling keyboard input in Java? (I'd rather not switch to another library, like LWJGL... unless I have no choice).

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• WYSIWYG iframe editor and oninput event.

  - by teehoo

  I'm writing a simple WYSIWYG editor in an iframe, but having trouble registering the "oninput" event to detect when the user modifies the text field such as pasting in data etc. var txtArea = document.getElementById('txtArea'); txtArea.contentWindow.document.designMode="on"; txtArea.contentWindow.document.open(); txtArea.contentWindow.document.write("<head><style type='text/css'>body{font-size:13px;}</style></head><body>"+data.document+"</body>"); txtArea.contentWindow.document.close(); $([txtArea.contentWindow.document]).bind("click", updateCaretPosMouse); //fires $([txtArea.contentWindow.document]).bind("keyup", updateCaretPosKeyboard); //fires $([txtArea.contentWindow.document]).bind("input", textChanged); //doesn't fire If I create a plain old element, and add the "input" event to this, then it works. Do 'input" events not work with iframes WYSIWYG editors?

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• jQuery event handler queue

  - by resopollution

  Overview of the problem In jQuery, the order in which you bind a handler is the order in which they will be executed if you are binding to the same element. For example: $('#div1').bind('click',function(){ // code runs first }); $('#div1').bind('click',function(){ // code runs second }); But what if I want the 2nd bound code to run first? . My current solution Currently, my solution is to modify the event queue: $.data(domElement, 'events')['click'].unshift({ type : 'click', guid : null, namespace : "", data : undefined, handler: function() { // code } }); . Question Is there anything potentially wrong with my solution? Can I safely use null as a value for the guid? Thanks in advance. .

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• Actionscript 3 Navigate with Keyboard Between Labels

  - by Sbml

  Hello I need to navigate between labels with arrow keys like a power point presentation. I have an array with labels and a KeyboardEvent. My problem is, if I am in label number four for example and click in arrow click, always goes to first label. So I need help defining my current label to go to the next on key press. My code: import flash.events.KeyboardEvent; var myLabels:Array = [ "label_1", "label_2", "label_3", "label_4"]; var nextLabel:String; var inc:int = 0; stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed); function keyPressed(evt:KeyboardEvent):void { switch(evt.keyCode) { case Keyboard.RIGHT : nextLabel = String(myLabels[inc]); gotoAndStop(nextLabel); inc++; break; } } Thanks

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• iphone build error that makes me want to buy a nail gun

  - by sol

  I'm just trying to build a simple update (which I have done before) for an iphone app, but now for some reason I'm getting this error. Can anyone tell me what it means? Command/Developer/Library/Xcode/Plug-ins/CoreBuildTasks.xcplugin/Contents/Resources/copyplist failed with exit code 127 sh: plutil: command not found Here are the Build Results: CopyPNGFile /Users/me/path/build/Dist-iphoneos/MyApp.app/img_000.png images/img_000.png cd /Users/me/ setenv COPY_COMMAND /Developer/Library/PrivateFrameworks/DevToolsCore.framework/Resources/pbxcp setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/System/Library/Frameworks/JavaVM.frameworK/Versions/1.6/Home/" "/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Plug-ins/iPhoneOS Build System Support.xcplugin/Contents/Resources/copypng" -compress "" /Users/path/images/img_000.png /Users/me/path/build/Dist-iphoneos/MyApp.app/img_000.png sh: dirname: command not found CopyPlistFile /Users/me/path/build/Dist-iphoneos/MyApp.app/Entitlements.plist Entitlements.plist cd /Users/me/ setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/System/Library/Frameworks/JavaVM.frameworK/Versions/1.6/Home/" /Developer/Library/Xcode/Plug-ins/CoreBuildTasks.xcplugin/Contents/Resources/copyplist --convert binary1 Entitlements.plist --outdir /Users/me/path/build/Dist-iphoneos/MyApp.app sh: plutil: command not found

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• Making element draggable with Android WebView (ideally, just with Javascript) ?

  - by GJTorikian

  I'm building an app with a build target of 1.5 . I have a variable, WebView browser, that is calling loadUrl to load a static HTML page from my assets folder. In that HTML page, the following JavaScript is defined: var supportsTouch = ('createTouch' in document); ... var w = $('wrapper'); w[supportsTouch ? 'touchmove' : 'onmousemove'] = move; w[supportsTouch ? 'touchend' : 'onmouseup'] = function(event){ dragging = false; }; where move is another function that handles the dragging. Unfortunately, this doesn't seem to work. I cannot figure out a concise list of which touch events are available to Android--is it ontouchmove, or touchmove? Am I supposed to set up an onTouchEvent call back in my Java code, which then launches the JavaScript function?

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• Class as an Event Observer

  - by emi

  I want to do something like this... var Color = Class.create({ initialize: function() { this._color = "white"; this.observe("evt: colorChanged", this.colorChanged.bind(this)); }, changeColor: function(color) { this._color = color; this.fire("evt: colorChanged"); }, colorChanged: function(event) { alert("You change my color!"); } }); var a = new Color().changeColor("blue"); Why the colorChange custom event will never be dispatched and I need to use, instead of this, a DOM element like document.observe? In my code I'd like to know which class dispatches the event using event.target and I can't if I must use document or some other DOM element. :( I've been working in Actionscript 3 and that's the methodology I learned to work with custom events in classes. What about Javascript?

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• jQuery selector help - Can I generate a selector from clicking on an element?

  - by Kettenbach

  Hi All, I have jQuery, FireFox, Firebug, IE, and IE developer toolbar. When I am examing a page with either FireBug or IE Dev toolbar, I am able to click on an element and it shows me in the dom where the element is etc... Is there anyway to transform that selection into a valid jQuery selector? I know I can use ID, classes, and element relative to other elements etc... but what about when I am looking at some random table cell that doesn't have a class or id etc.. Can I generate a selector on the fly like that? I thought for sure there was. Any thoughts or ideas are always appreciated Thanks, ~ck in San Diego

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• How to determine which class has called a function

  - by dannyc

  Hi, I am working on a Flex Front End at the moment, and have been using the Parsley framework for passing messages/events around. I was wondering if there is a simple way for a function (in this case, an event's constructor) to obtain a reference to the object which called it? This is to ensure that a certain event that I am defining can only be dispatched by one specified class. My thinking is to check the caller of the constructor somehow, and throw an error if it is not of the correct type. I am open to suggestions of alternative approaches here, but I would ideally like to stick to using the Parsley 'MessageHandler' approach if at all possible. Thanks for reading guys..

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• Javascript dispatchEvent

  - by xpepermint

  Hey... I'm using Flash a lot and my classes uses EventDispatcher class which allowes me to define custom events of a class. How can I do this in javascript. I would like to do something like this: var MyClass = function() { }; MyClass.prototype = { test : function() { dispatchEvent('ON_TEST'); } }; var mc = new MyClass(); mc.addEventListener('ON_TEST', handler); function handler() { alert('working...') } How is this posible with Javascript?

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• JavaScript onload/onreadystatechange not firing when dynamically adding a script tag to the page.

  - by spoon16

  I am developing a bookmarklet that requires a specific version of jQuery be loaded on the page. When I have to dynamically insert a jQuery script tag to meet the requirments of the bookmarklet I want to wait for the onload or onreadystatechange event on the script tag before executing any function that requires jQuery. For some reason the onload and/or onreadystatechange events do not fire. Any ideas on what I am doing wrong here? var tag = document.createElement("script"); tag.type = "text/javascript"; tag.src = "http://ajax.microsoft.com/ajax/jquery/jquery-" + version + ".min.js"; tag.onload = tag.onreadystatechange = function () { __log("info", "test"); __log("info", this.readyState); }; document.getElementsByTagName('head')[0].appendChild(tag); The FULL code: http://gist.github.com/405215

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• ASP.net SessionState Error in Design Mode

  - by stringo0

  I'm getting a weird error in the design view for a user creation page for 2 controls: Error Creating Control - wCreateUser Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive. (There's some more) I've done both of these, but I'm still getting the error in design mode. The controls work fine when compiled, and on the live site - this is just in the Visual Web Developer 2010 Design view for the page. Any ideas as to how I can resolve this? Thanks!

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• Custom event listener on Android app

  - by Bilthon

  Hi everybody, I need to set up a simple event listener to refresh a listview from once in a while. The problem is I don't know how could I generate an event. I know that for events like key or button pressing I just need to implement the handler. But in this specific case I actually need to generate the event, which will be fired everytime another running thread of my app wakes up and refreshes it's list of news from a rss feed. I've done everything, but got stucked in here. Can I get any suggestion or link with some more info on how to implement this? Thanks Nelson R. Perez

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• jQuery live() and stopPropagation() issue

  - by colourandcode

  I know that the live() event handles event bubbling different than all other jQuery events. jQuery recommends using 'return false', but in my case that doesn't work. The issue is: I have a DIV which contains an anchor tag. The DIV is bound using live(). Whenever I click the anchor tag inside this DIV it bubbles and calls the DIV's event. If I bind an event to that A tag which returns false it prevents the link from opening. Neither stopPropagation() or return false work in this case. Are there any other options? Ideally I'd like to keep the live() event around.

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• onTextChanged Event for many Textboxes c#

  - by Alan Bennett

  Hi, I am currently building a prototype for a new system screen, and i am using c# to build this. The question i have is, i currently have 14 textboxes which are filled from a condition from a couple of other controls on the screen. these 14 textboxes all add up to a total shown in another textbox. as these textboxes are editable (in case the client wishes to increase the value) (cant go into to much detail but they will) I need to have a firable ontextchange event for when the values change so the total box updates. however i have a feeling there must be a way of not having to create 14 different events, is there a way that i can have 1 event which fires if any of the 14 text boxes are fired? thanks Alan

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• Would you use Code Bubbles?

  - by Paulo Santos

  I've read this question mentioning Code Bubbles and I've watched their video presentation. The video is impressive, and does seem a little bit futuristic, but apparently it's somewhat real. But that kept me thinking... Would a developer really use such tool? We, as developers, are used to deal with code files, organizing them in directories, in one way or another, some common IDE (for those language that has them). It would be a great leap to use something like Code Bubbles, as they propose. I, personally, am not sure if I could work in such environment... although I think I would just need some adjusting... but I really don't see my mind working out the kinks of it. What are your thoughts on this?

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• EventSetter - error XAML in Visual Studio designer

  - by pileggi

  Hi! I've done my TreeView all with XAML but now I'd like to manage an event with code-behind. The HierarchicalDataTemplate contains an Image. I need to capture the events MouseEnter / MouseLeave on the Image. I've tried in this way: <Image x:Name="imgArticolo" Source="{Binding imgArt}"> <Image.Style> <Style TargetType="{x:Type Image}"> <EventSetter Event="MouseEnter" Handler="iArt_MouseEnter"/> </Style> </Image.Style> </Image> But in the designer of Visual Studio appear the error: "Impossible to load a file XAML with EventSetter". How can I remedy? Thank you! Pileggi

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