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  • How to view TV Tuner component input with OpenCV?

    - by monky822
    Hi Everyone, I'm trying to use my tvtuner instead of a webcam with opencv. The problem is that by default cvCaptureFromCAM(0) gives me the tv channel of the tv tuner, but what I actually want the input from my the RCA input of the tv tuner. I have tried usingcvCaptureFromCAM(-1) to check if there are additional camera devices found within the tvtuner, but it only gives me the general tvtuner as an option. Is there a way to change the channel of the input?

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  • Does visibility affect DOM manipulation performance?

    - by Chetan Sastry
    IE7/Windows XP I have a third party component in my page that does a lot of DOM manipulation to adjust itself each time the browser window is resized. Unfortunately I have little control of what it does internally and I have optimized everything else (such as callbacks and event handlers) as much as I can. I can't take the component off the flow by setting display:none because it fails measuring itself if I do so. In general, does setting visibility of the container to invisible during the resize help improve DOM rendering performance?

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  • Emulating a web browser

    - by Sean
    Hello, we are tasked with basically emulating a browser to fetch webpages, looking to automate tests on different web pages. This will be used for (ideally) console-ish applications that run in the background and generate reports. We tried going with .NET and the WatiN library, but it was built on a Marshalled IE, and so it lacked many features that we hacked in with calls to unmanaged native code, but at the end of the day IE is not thread safe nor process safe, and many of the needed features could only be implemented by changing registry values and it was just terribly unflexible. Proxy support JavaScript support- we have to be able to parse the actual DOM after any javascript has executed (and hopefully an event is raised to handle any ajax calls) Ability to save entire contents of page including images FROM THE loaded page's CACHE to a separate location ability to clear cookies/cache, get the cookies/cache, etc. Ability to set headers and alter post data for any browser call And for the love of drogs, an API that isn't completely cryptic Languages acceptable C++, C#, Python, anything that can be a simple little console application that doesn't have a retarded syntax like Ruby. From my own research, and believe me I am terrible at google searches, I have heard good things about WebKit... would the Qt module QtWebKit handle all these features?

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  • store everything only once, smarter

    - by hsmit
    In the digital world a lot is stored multiple times. As a thought experiment or creative challenge I want you to think about making this more efficient and maybe reuse more. Think of the following cases: an mp3 track is downloaded multiple times, copied over various devices on website a login form is often rebuild many times, why not reuse more code? words themselves are used many times questions and answers are accidentally saved at many places in parallel images or photos often describe the same data (Eiffel tower, Golden gate, Taj Mahal) etc etc Are you aware of solutions? Or are you thinking about similar topics? Ideas? Blueprints? I'd love to hear from you!

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  • Has there been a Firefox update recently?

    - by Rob Nicholson
    Has there been an update to Firefox recently? Users are reporting they are unable to use my web application when using Firefox (can't enter text into Infragistics grid). I've not changed anything recently and it works when I try with Firefox. So more of a general "Has there been an significant upgrade recently?" kind of question. Thanks, Rob.

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  • Entity framework entity class mapping with plain .net class

    - by Elan
    I have following in entity framework Table - Country Fields List item Country_ID Dialing_Code ISO_Alpha2 ISO_Alpha3 ISO_Full I would like to map only selected fields from this entity model to my domain class. My domain model class is public class DomainCountry { public int Country_ID { get; set; } public string Dialing_Code { get; set; } public string ISO_3166_1_Alpha_2 { get; set; } } The following will work however insert or update is not possible. In order to get insert or update we need to use ObjectSet< but it will not support in my case. IQueryable<DomainCountry> countries = context.Countries.Select( c => new DomainCountry { Country_ID = c.Country_Id, Dialing_Code = c.Dialing_Code, ISO_3166_1_Alpha_2 = c.ISO_3166_1_Alpha_2 }); It will be really fantastic could someone provide a nice solution for this. Ideally it will be kind of proxy class which will support all the futures however highly customizable i.e. only the columns we want to expose to the outer world

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  • Choosing an installer product that is free and will download/install the .NET Framework

    - by Coder7862396
    I'm currently using the Visual Studio Installer (Setup Project) in Visual Studio 2010 as the installer for MyProgram. It has some quirky bugs and is not very customizable so I would like to switch to another installer product. Here are my requirements: Must be free (and licensed for commercial use) Must install the Windows Installer 3.1 and .NET Framework 4.0 if the client doesn't have them The installer will download them if they are not available The code for detecting the .NET Framework and downloading it must be written by Microsoft (I do not want to have to update hard-coded URLs and registry keys in the future). I know that the Windows SDK includes a setup bootstrap that does this (C:\Program Files\Microsoft SDKs\Windows\v7.0A\Bootstrapper) In the future, when .NET Framework 5 is released and MyProgram uses it, no installer code will need to be changed, the updated installer product should see that MyProgram now uses the .NET Framework version 5 and will install that Here are my current choices: Visual Studio Installer: Automatically detects/downloads/installs Windows Installer and .NET Framework using a bootstrapper Setup.exe (Good!) Limited/buggy functionality (Uninstall shortcuts in the Start Menu cause empty folders to be left behind during uninstall, asking the user if they want a desktop shortcut requires a lot of work, etc.) NSIS: Doesn't natively support the .NET Framework so adding it as a prerequisite requires excessive coding, hardcoded URLS, etc. Inno Setup: Doesn't natively support the .NET Framework so adding it as a prerequisite requires excessive coding, hardcoded URLs, etc. WiX: Steep learning curve... not sure if I want to spend weeks learning it only to find out that it has the same uninstall problem as the Visual Studio Installer (because they both use MSI files) InstallShield LE 2010: Downloading it requires me to setup a fake email account to register just to download it. Then once it is installed it has to contact the company's servers and transmit some private information to them before I'm even allowed to try the free version. This is the most insidious form of DRM that there is and I will not accept it.

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  • Best Maven plugins

    - by ripper234
    We are just moving to Maven, and I understand there is a world of different plugins & extensions. Which are the best ones you recommend for general usage? (On plugin per answer please)

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  • Are there some newer books to read beside these?

    - by Gandalf StormCrow
    I've come accross these websites who recommend certain books but they are pretty much old : http://www.joelonsoftware.com/navLinks/fog0000000262.html http://www.codinghorror.com/blog/2004/02/recommended-reading-for-developers.html http://sites.google.com/site/steveyegge2/ten-great-books Are there books in recent years which every developer should read?I'm mostly interested about Java/Spring/Hibernate/Jboss although reading book about programming in general wouldn't be bad.

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  • How to use two templates for ListViewItem using WPF

    - by Gregor
    Hi, I would like to have a ListView that would have have items similar to Microsoft Outlook inbox with items arranged by Conversations (see the attached photo). An item can either be a simple textblock containing the topic of the conversation (on the photo this are the blue lines) or it can contain email information specified by the ListView's header. It would be best if the items with conversation topics would be push buttons so that emails inside that conversation could be shown or hidden by pressing this button. Any ideas how can I achieve this? Do I specify two ListViewItem templates? If yes, how do I tell in the code which template to use for each item? Any help will be GREATLY appreciated!! Regards, Gregor

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  • Catch All (handled or unhandled) Exceptions

    - by andySF
    Hi, I want to catch all exceptions raised (handled or unhandled) to log them. for unhandled i use ThreadExceptionEventHandler and UnhandledExceptionEventHandler but i want to catch and exceptions that are in try catch block with or without (Exception e). It's possible to inherit the exceptions class to create a general event?

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  • 2d terrain generation in real time

    - by Skoder
    Hey, I'm trying to create a game similar to this (Note:When you click 'play', there are SFX in the game which you can't seem to turn off, so you may want to check volume). In particular, I'm interested in knowing how the 'infinite' landscape is generated. Are there any tutorials/articles describing this? I came across procedural generation, but I'm not quite sure what topics I should be looking for (or if it's even procedural generation). (I'm using C#, but I don't mind the language as I assume the theory behind it remains the same) Thanks for any suggestions

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  • WPF/SL EventAggregator implementation with durable subscribers behavior?

    - by sha1dy
    Hi. Currently I'm building an application using latest Prism for Silverlight 4. I've a module and in that module I've two views with view models. Also I've a module view with two regions for each view. In module initialization I'm registering my views and view models in Unity container and also register views with corresponding regions. The problem is that views should display something similar to table-detail information - first view shows available entities ans the second view shows detail of selected entity. I need a way how to pass them initial selected entity. Newly created first view doesn't have any selected entity and newly created second view doesn't show any details. Currently I'm doing that this way: In module I create two view models and register them as instances in Unity container and then I register views as types for corresponding regions. Each view subscribes to EntitySelectedEvent from EventAggregator. Module initializer publish this event after initialization and this way two views are selecting the same entity. I know this looks ugly - I tried publishing this event from one of view models but the problems is that EventAggregator in Prism doesn't support durable subscribers - this means that if the second view model didn't subscribe to event before the first view model fired it, it won't receive and event. I know this is a normal behavior of EventAggregator, but I'm looking for a solution when view models can fire events without depending on initialization order of them - that is the first model can fire event before the second model was created and the second model will receive this 'queued' event after subscribing to it. Are there any other messaging implementations for WPF/SL which do support such behavior or using a mediator (in my example it's a module itself) isn't such a bad idea after all? One big problem with mediator is that models must be created right away in initialize and they can't be registered as types in container because this leads again to missing subscribers.

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  • Is the Angular templateCache shared between apps? Is it persistent?

    - by alexp
    If I have two Angular apps that run on the same domain, will/can they share data in the templateCache? Or is the cache unique to each main application module? In general I'm trying to understand what dictates when a new templateCache is created. Furthermore I'm not clear on whether or in what way the templateCache is persistent? Looking in local storage and cookies, I don't see where anything is getting stored.

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  • JSplitPane giving wrong resize cursor with GTK LAF?

    - by carneades
    Running the official JSplitPane demo http://java.sun.com/docs/books/tutorial/uiswing/components/splitpane.html on my Ubuntu system gives a resize cursor like -- over the divider. The behavior of native split panes gives <-- resize cursors. Does this qualify as a bug that should be reported to Sun (eh, Oracle)? Is there a workaround?

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  • Set up ECLIPSE IDE Path

    - by AEIOU
    I'm still working on this problem: http://stackoverflow.com/questions/2610469/java-runtime-command-line-process Based on what one of the contributors has said I tried the following: So I've tried adding the path to "gs" in my "Run Configurations" - Environment Tab and "Linked Resources" (Preferences - General - Workspace - Linked Resources). Neither has worked... But it's still not working, I'm getting the same error. Any other ideas? Because I'm all out.

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  • Trying to access a specific option value to generate a popup window

    - by Isaac
    I am trying to use a click event to generate a popup window based off of the specific value chosen. I am having trouble with the if statement and trying to access each specific option value. Can any of you give me some hints? <select id="offices"> <option value="Choose an Office">Choose an Office</option> <option value="Residential Education (ResEd)" >Residential Education (ResEd)</option> <option value="Dean of Students">Dean of Students</option> <option value="Office of Student Affairs">Office of Student Affairs</option> <option value="Vice-Provost of Student Affairs">Vice-Provost of Student Affairs</option> </select> </div> function display(){ var officearray = [{ Office: "Residential Education (ResEd)", ID: "725-2800", Description: "The Office of Residential Education is responsible for developing the policies, programs, and staffing which support the intellectual, educational, and community-building activities in student residences. Second Floor. " }, { Office: "Dean of Students", ID: "723-7833", Description: "The Dean of Students office is composed of 13 individual administrative units that are concerned with the general welfare of both undergraduate and graduate students, in and out of the classroom. Second floor." }, { Office: "Office of Student Activities (OSA)", ID: "723-2733", Description: "Services for student organizations, student-initiated major events and programs, and fraternities and sororities. Second floor." }, { Office: "Vice-Provost of Student Affairs", ID: "725-0911", Description: "The Vice Provost for Student Affairs is responsible to the Provost for providing services and programs to undergraduate and graduate students in support of the academic mission of the University. Second floor." }] for(var i = 0; i < officearray.length; i++) { var o = document.getElementById("offices") var oString = o.options[o.selectedIndex].value; newwindow2 = window.open('', 'name', 'height=200, width=150') var tmp = newwindow2.document if (oString == officearray[i].Office) { tmp.writeln(officearray[i].Description) } } } document.getElementsByTagName('option').addEventListener("click",display,false)

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  • semi dynamic cdn

    - by dwi kristianto
    i'm developing couple of websites using php (directory script, etc.) and wordpress as cms. i need to improve its performance, by using cdn for static files (css, js, images). the problem is, css and javascript files are generated on the fly. i did that due to yahoo and some expert advice to combine the files into one file. also changing basic color of css files. for the time being, i use couple of small vps but still its not fast enough. i already contact maxcdn and the support guy said that they dont have such kind of services. what i need is: a cdn that will serve the request from user/visitor and there's no file in local disk, the cdn will redirect/fetch it from another domain/server. in vps, it could be done easily using combination of .htaccess and php, but NOT in the cdn. most of cdn only support purely static files. is there any such cdn that will server semi-dynamic files?

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  • Tagging CALayers in iPhone

    - by Peyman
    Hi I am looking for a general way to be able to search for a unique CALayer in a hierarchy without having to remember where the layer is in a hierarchy (and use the sublayer: and superlayer: methods). I know this is possible with UIViews (which makes flipping views easy) but is it possible for CALayer? thank you in advance for your help Peyman

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  • In cakePHP, how to retrieve joined result from multiple tables

    - by Manish Sharma
    Hi, can anyone tell me, how to retrieve joined result from multiple tables in cakePHP ( using cakePHP mvc architecture). For example, I have three tables to join (tbl_topics, tbl_items, tbl_votes. Their relationship is defined as following: a topic can have many items and an item can have many votes. Now I want to retrieve a list of topics with the count of all votes on all items for each topic. The SQL query for this is written below: SELECT Topic.*, count(Vote.id) voteCount FROM tbl_topics AS Topic LEFT OUTER JOIN tbl_items AS Item ON (Topic.id = Item.topic_id) LEFT OUTER JOIN tbl_votes AS Vote ON (Item.id = Vote.item_id); My problem is I can do it easily using $this-><Model Name>->query function, but this requires sql code to be written in the controller which I don't want. I'm trying to find out any other way to do this (like find()).

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  • What directories do the different Application SpecialFolders point to in WindowsXP and Windows Vista

    - by Thorsten Lorenz
    Namely I have: Environment.SpecialFolder.ApplicationData Environment.SpecialFolder.CommonApplicationData Environment.SpecialFolder.LocalApplicationData I am unclear as to were these point to in Windows XP and/or Windows Vista. What I found so far is that the ApplicationData points to the ApplicationData Folder for the current user in XP and the roaming application data folder in Vista. I would also like to know if there are general guidelines on when to use which.

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  • Mixed launch mode not supported: [Profile]

    - by Imran
    Friends, I need to debug a application. The using Oracle Workshop for weblogic 10.3, I have downloaded plugins for TPTP. when i tested working of TPTP in a sample Java Standard-alone application it worked. but when i tried to use it for Web-app which uses Weblogic, it prompting me the above error[in the subject]. Please help.

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