Search Results

Search found 10945 results on 438 pages for 'background'.

Page 198/438 | < Previous Page | 194 195 196 197 198 199 200 201 202 203 204 205  | Next Page >

  • How do I hide the text on a label in Obj-C?

    - by dbonneville
    I'm using label of a button to send a value into a function. However, I want the button to be invisible. I have the background color turned of in IB, and the text color is also set to nothing, but the text still shows up on the button. Is there another way to have a clear button that sends a value when it's clicked? If I could just turn off / hide the text on the stock UIButton that would be perfect... Thanks, Doug

    Read the article

  • Migrating from jQuery to Prototype

    - by Craig Gardner
    I'm starting to write code using Prototype coming from a jQuery background. Is there any chart that shows the prototype equivalent method to use in place of specific jQuery methods? More specifically, I'm looking for a $('#my-id').prepend('some stuff') equivalent in prototype?

    Read the article

  • Opengl: use a texture only to give alpha channel to a colored object

    - by Damian
    I'm new at OpenGL and I can't find out how to do this: I want to render a letter and be able to change it's color, so I have a texture with the letter on a transparent background. I managed to render it using this code: glEnable(GL_BLEND) glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) But that renders the letter in black, as it's on the texture. How can I render it with the color setted with glColor4f?

    Read the article

  • Using an image file vs data URI in the CSS

    - by fudgey
    I'm trying to decide the best way to include an image that is required for a script I've written. I discovered this site and it made me think about trying this method to include the image as a data URI since it was so small - it's a 1x1 pixel 50% opacity png file (used for a background) - it ends up at 2,792 bytes as an image versus 3,746 bytes as text in the CSS. So would this be considered good practice, or would it just clutter up the CSS unnecessarily?

    Read the article

  • Baby steps to get into Android application development

    - by Ra'ed Boshmaf
    I am in my semester vacation and i am looking to spend some time in learning how to develop Android application since this market is on fire these days, i have a background with programming and would like you to suggest ways or even sites that use baby steps tutorials to get an idea ( and hopefully ) create android application. Any suggestions would be great since i spend the last 2 days searching the web without finding what i am looking for thanks.

    Read the article

  • Is django orm & templates thread safe?

    - by Piotr Czapla
    I'm using django orm and templates to create a background service that is ran as management command. Do you know if django is thread safe? I'd like to use threads to speed up processing. The processing is blocked by I/O not CPU so I don't care about performance hit caused by GIL.

    Read the article

  • Combining two UPDATE Commands - Performance ?

    - by Johannes
    If I want to update two rows in a MySQL table, using the following two command: UPDATE table SET Col = Value1 WHERE ID = ID1 UPDATE table SET Col = Value2 WHERE ID = ID2` I usually combine them into one command, so that I do not to have to contact the MySQL server twice from my C client: UPDATE table SET Col = IF( ID = ID1 , Value1 , Value2) WHERE ID=ID1 OR ID=ID2 Is this really a performance gain? Background Information: I am using a custom made fully C written high-performance heavily loaded webserver.

    Read the article

  • How to determine the event of the linux devices?

    - by sasayins
    Hi, I am learning some embedded programming. I am using Linux as my platform and I want to create a daemon program that will check if a particular device(magstrife, keypad, etc) is active. Like for example, my daemon program is running in the background, then when I make a keypress event, my deamon app will do something. What implementation should I do to create this app? And how can I check the event of the devices? Thanks.

    Read the article

  • php/html add link to table <TD>

    - by Stefan
    How can i add a link to my td tag from a table? onclick doesnt work for me :S, or maybe a good example :P my td tag: $world .= ('<td background="images/world/Heli.jpg" border="1"></td>'); link: <a href="?site=world&action=showvillage&id=' . getVillageID(($xm2), ($ym2)) . '"></a> thnx :D

    Read the article

  • Translate RoR Code to Java

    - by mnml
    Hi, for some reasons I am trying to translate the following RoR view code to a Java Groovy view: <% modulo_artists = @artists.length % 3 base = @artists.length / 3 base = base.ceil case modulo_artists when 0 cols = [base, base, base] when 1 cols = [base, base + 1, base] when 2 cols = [base + 1, base, base + 1] end counter = 0 %> <% id_hash = {"0" => "url('/images/actorsbg.png');", "1" => "url('/images/musiciansbg.png');", "2" => "url('/images/artistsbg.png') no-repeat; color: #FFF;", "3" => "url('/images/fashionbg.png')"} %> <div id="artists_<%=params[:artist_cat]%>" style="background: <%= id_hash[params[:artist_cat]] %>;" > <table border="0" width="660" height="164" cellpadding="0" cellspacing="0"> <tr valign="middle"> <% 3.times do |i| %> <td width="220" align="center" style="padding-right: 15px;"> <% cols[i].times do %> <h1><a href="/artists/show/<%= @artists[counter].urlname %>" ><%= @artists[counter].name %></a></h1> <% counter = counter + 1 %> <% end %> </td> <% end %> </tr> </table> </div> This is what I got so far: #{extends 'main.html' /} %{ modulo_artists = artists.size() % 3 base = artists.size() / 3 base = Math.ceil(base) if(modulo_artists == 0) cols = [base, base, base] else if(modulo_artists == 1) cols = [base, base + 1, base] else if(modulo_artists == 2) cols = [base + 1, base, base + 1] endif counter = 0 }% <div id="artists_${artist_cat}" style="background:${id_hash};" > <table border="0" width="660" height="164" cellpadding="0" cellspacing="0"> <tr valign="middle"> #{list items:1..3, as:'i'} <td width="220" align="center" style="padding-right: 15px;"> #{list items:cols[i]} <h1><a href="@{Artists.show(artists.get(counter).name.replaceAll(" ", "-"))}" >${artists.get(counter).name}</a></h1> %{ counter = counter + 1 }% #{/list} </td> #{/list} </tr> </table> </div> The idea is to keep the items organised in 3 columns like 1|0|1 4|5|4 or 5|4|5 for example

    Read the article

  • Add 'expand' button to JTree node that has no children?

    - by thedude19
    I'd like to add the 'expand' button to my JTree's nodes to indicate that they are expandable. The catch is that they have no children until the user clicks on them (due to processing that happens in the background). Is there any way I can set a node as a parent or having children without it actually having children? Thanks

    Read the article

  • How to test 500.html in (django) development env?

    - by lud0h
    I am using Django for a project and is already in production. In the production environment 500.html is rendered whenever a server error occurs. How do I test the rendering of 500.html in dev environment? Or how do I render 500.html in dev, if I turn-off debug I still get the errors and not 500.html background: I include some page elements based on a page and some are missing when 500.html is called and want to debug it in dev environment.

    Read the article

  • Android Layout question

    - by Nils
    Hello, I need to create a map with items on it (the map consists of a drawable object, which represents a room) and I thought about using buttons with background images for the items so that they are clickable. I guess the AbsoluteLayout fits here the best, but unfortunately it's deprecated. What layout would you recommend me for this kind of application ? Is there another layout which supports X/Y coordinates ?

    Read the article

  • Collpasible menu needs all header needs to be closed on initial loading

    - by Maju
    I have a sidebar with collapsible menu it works fine but all the values come expanded the initial loading time.I want it to be closed on load and toggled thereafter. Here is the jquery used // Sidebar Toggle var fluid = { Toggle : function(){ var default_hide = {"grid": true }; $.each( ["pagesnav", "commentsnav", "userssnav", "imagesnav"], function() { var el = $("#" + (this == 'accordon' ? 'accordion-block' : this) ); if (default_hide[this]) { el.hide(); $("[id='toggle-"+this+"']").addClass("hidden"); } $("[id='toggle-"+this+"']") .bind("click", function(e) { if ($(this).hasClass('hidden')){ $(this).removeClass('hidden').addClass('visible'); el.slideDown(); } else { $(this).removeClass('visible').addClass('hidden'); el.slideUp(); } e.preventDefault(); }); } ); } } jQuery(function ($) { if($("[id^='toggle']").length){fluid.Toggle();} }); here is the html <span class="ul-header"><a id="toggle-pagesnav" href="#" class="toggle visible">Content</a></span> <ul id="pagesnav"> <li><a class="icn_manage_pages" href="#">Manage Pages</a></li> <li><a class="icn_add_pages" href="#">Add Pages</a></li> <li><a class="icn_edit_pages" href="#">Edit Pages</a></li> <li><a class="icn_delete_pages" href="#">Delete Pages</a></li> </ul> <!-- End Content Nav --> <!-- Start Comments Nav --> <span class="ul-header"><a id="toggle-commentsnav" href="#" class="toggle visible">Comments</a></span> <ul id="commentsnav"> <li><a class="icn_manage_comments" href="#">Manage Comments</a></li> <li><a class="icn_add_comments" href="#">Add Comments</a></li> <li><a class="icn_edit_comments" href="#">Edit Comments</a></li> <li><a class="icn_delete_comments" href="#">Delete Comments</a></li> </ul> here is the css used .toggle { display:block; } .ul-header a.visible { background:url('../img/icons/small/toggle_close.png') no-repeat scroll 97% 50%; } .ul-header a.hidden { background:url('../img/icons/small/toggle_open.png') no-repeat scroll 97% 50%; } Please help.

    Read the article

  • Generic JSON parser in .NET / WPF?

    - by niklassaers
    I've read lots of tutorials on how to deserialize a JSON object to an object of a particular using DataContractJsonSerializer. However, I'd like to deserialize my object to a Dictionary consisting of either Strings, Arrays or Dictionaries, such as System.Json does with SilverLight when I say JsonObject.Parse(myJSONstring). Is there an equivalent to System.Json that I can use in my WPF project? (just a short background: I'm fetching JSON objects that have way to much info, and I just want to use a little bit to fill out a String array) Cheers Nik

    Read the article

  • Temporary Onmouseover

    - by 2x2p1p
    Hi guys :) Css "over" selector applys a temporary style to an element, it isn't definitive: div:hover { background-color: red; } I can use the same thing with javascript but it is a bit complicate and impossible for several elements: var elem = document.getElementByTagName ("div")[0]; elem.onmouseover = function () { this.style.backgroundColor = "red"; } elem.onmouseout = function () { this.style.backgroundColor = "transparent"; } There is a better way ? Something like this: document.getElementByTagName ("div")[0].ontemporarymouseover = function () { // LoL this.style.backgroundColor = "red"; } Thanks

    Read the article

  • How to access a named element of a derived user control in silverlight ?

    - by Mrt
    Hello, I have a custom base user control in silverlight. <UserControl x:Class="Problemo.MyBaseControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400"> <Grid x:Name="LayoutRoot" Background="White"> <Border Name="HeaderControl" Background="Red" /> </Grid> </UserControl> With the following code behind public partial class MyBaseControl : UserControl { public UIElement Header { get; set; } public MyBaseControl() { InitializeComponent(); Loaded += MyBaseControl_Loaded; } void MyBaseControl_Loaded(object sender, RoutedEventArgs e) { HeaderControl.Child = Header; } } I have a derived control. <me:MyBaseControl x:Class="Problemo.MyControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" xmlns:me="clr-namespace:Problemo" d:DesignHeight="300" d:DesignWidth="400"> <me:MyBaseControl.Header> <TextBlock Name="header" Text="{Binding Text}" /> </me:MyBaseControl.Header> </me:MyBaseControl> With the following code behind. public partial class MyControl : MyBaseControl { public string Text { get; set; } public MyControl(string text) { InitializeComponent(); Text = text; } } I'm trying to set the text value of the header textblock in the derived control. It would be nice to be able to set both ways, i.e. with databinding or in the derived control code behind, but neither work. With the data binding, it doesn't work. If I try in the code behind I get a null reference to 'header'. This is silverlight 4 (not sure if that makes a difference) Any suggestions on how to do with with both databinding and in code ? Cheers

    Read the article

  • Cleansing string / input in Coldfusion 9

    - by Jakub
    I have been working with Coldfusion 9 lately (background in PHP primarily) and I am scratching my head trying to figure out how to 'clean/sanitize' input / string that is user submitted. I want to make it HTMLSAFE, eliminate any javascript, or SQL query injection, the usual. I am hoping I've overlooked some kind of function that already comes with CF9. Can someone point me in the proper direction?

    Read the article

  • Using Core Data Concurrently and Reliably

    - by John Topley
    I'm building my first iOS app, which in theory should be pretty straightforward but I'm having difficulty making it sufficiently bulletproof for me to feel confident submitting it to the App Store. Briefly, the main screen has a table view, upon selecting a row it segues to another table view that displays information relevant for the selected row in a master-detail fashion. The underlying data is retrieved as JSON data from a web service once a day and then cached in a Core Data store. The data previous to that day is deleted to stop the SQLite database file from growing indefinitely. All data persistence operations are performed using Core Data, with an NSFetchedResultsController underpinning the detail table view. The problem I am seeing is that if you switch quickly between the master and detail screens several times whilst fresh data is being retrieved, parsed and saved, the app freezes or crashes completely. There seems to be some sort of race condition, maybe due to Core Data importing data in the background whilst the main thread is trying to perform a fetch, but I'm speculating. I've had trouble capturing any meaningful crash information, usually it's a SIGSEGV deep in the Core Data stack. The table below shows the actual order of events that happen when the detail table view controller is loaded: Main Thread Background Thread viewDidLoad Get JSON data (using AFNetworking) Create child NSManagedObjectContext (MOC) Parse JSON data Insert managed objects in child MOC Save child MOC Post import completion notification Receive import completion notification Save parent MOC Perform fetch and reload table view Delete old managed objects in child MOC Save child MOC Post deletion completion notification Receive deletion completion notification Save parent MOC Once the AFNetworking completion block is triggered when the JSON data has arrived, a nested NSManagedObjectContext is created and passed to an "importer" object that parses the JSON data and saves the objects to the Core Data store. The importer executes using the new performBlock method introduced in iOS 5: NSManagedObjectContext *child = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType]; [child setParentContext:self.managedObjectContext]; [child performBlock:^{ // Create importer instance, passing it the child MOC... }]; The importer object observes its own MOC's NSManagedObjectContextDidSaveNotification and then posts its own notification which is observed by the detail table view controller. When this notification is posted the table view controller performs a save on its own (parent) MOC. I use the same basic pattern with a "deleter" object for deleting the old data after the new data for the day has been imported. This occurs asynchronously after the new data has been fetched by the fetched results controller and the detail table view has been reloaded. One thing I am not doing is observing any merge notifications or locking any of the managed object contexts or the persistent store coordinator. Is this something I should be doing? I'm a bit unsure how to architect this all correctly so would appreciate any advice.

    Read the article

  • QT how to select and change all coulmns of QStandardItemModel

    - by user63898
    Hello im trying to programmatic select and change the background color of all the columns of QStandardItemModel i have this that paint me only the first column out of 5 that the row contains // getting the rows QStandardItem* standardItem = m_model->item(i); //set the color i like all the row to be painted standardItem->setBackground(QBrush(QColor(255,0,0)));

    Read the article

  • Spiking neural networks

    - by lmsasu
    Hi all, which is the book one should start with in the domain of spiking neural networks? I know about Gerstner's "Spiking Neuron Models", published in 2002. Is there a more recent book, or maybe a more suitable one? I have a background in maths and artificial neural networks. If there are some good articles or overviews in this domain, also add them to the list. Thanks.

    Read the article

  • Pros and Cons of C vs C++ programming

    - by Mohit Deshpande
    I am trying to decide on whether I should learn C or C++. I come from a very object-oriented background of java and C#. I have heard that C++ is more object-oriented than C, BUT I have also heard that a C program compiles and runs faster than a C++ program. Please help me get the facts straight by giving pros and cons of BOTH points of views. (Points of views being C over C++, or C++ over C)

    Read the article

< Previous Page | 194 195 196 197 198 199 200 201 202 203 204 205  | Next Page >