loading

问题 Does anyone know a simple way to load a .gif image into python using pygame? I tried loading a .gif image using 'pygame.image.load(path)' which worked although only the first frame loaded.Ever since I had to use a loop to display multiple images at once. 回答1: Simply put, you cannot display multi-frame GIFs in Pygame, unless you use an extra library. Instead, explode your GIF. You will have to do everything manually, as Pygame does not control flow time, etc, which is necessary for animated

问题 My application has to support many fonts. User can select any font from given list of fonts. Loading all fonts synchronously or asynchronously does not make sense because user may use one of many fonts and its just waste of bandwidth. I have a select box with fonts name, I want to load font when user select font from select box. Using typekit I can divide fonts in separate kits but how do I load these kits on javascript event ? Can I achieve this using typekit , google fonts or any other

问题 Is there a way to tell, after the fact, whether an image (placed with the <img> tag, not via JS) has loaded correctly into a page? I have a gallery of head shots, and occasionally the third-party image server ends up serving up a 404. I can change the server-side code to use an onerror="showGenericHeadshot()" , but I really want to avoid making changes to server-side code. Ultimately, I want to determine if an image is missing or broken and replace it with a generic "Image Not Found" graphic.

问题 I have an HTML table displaying some information with a few rows. On each row, the user can click to reveal some additional rows that contains information related to the clicked row. Something like this: While the additional rows are being created with an AJAX request, a loading row is inserted right after the clicked row : Currently, everything works perfectly (drill down style), but I would like to add some animation to the loading row. I found a question ( this one ) that has a JSFiddle

问题 I am currently using following script in a hover-functionality: function UrlExists(url) { var http = new XMLHttpRequest(); http.open('HEAD', url, false); http.send(); return http.status!=404; } It loads every image each after the other, causing to slow down the entire website (or even crashing). Is there a way to check if an image exists , though prevent loading it (fully) using javascript? Thanks alot! 回答1: Since JavaScript (and therefore jQuery) is client-side and the image resides server

问题 I have windows form. I have put one loading image in PictureBox When I load form then I have set PictureBox1.Visible = false; While i am firing click event of button I have set PictureBox1.Visible = true; But in that event there is some code to retrieve data from database through stored procedure. When it will jump to code for retrieving data from stored procedure that loading image stops to load. It should not be happened. It should show as loading. I have used .gif loading image. How can I

问题 I am trying to load a partial entity with Linq to Entities: Dim contacts = From c In My.Context.Contacts _ Select New Contact With { _ .ContactId = c.ContactId, _ .Name = c.Name } I tried it and I get the following NotSupportedException: " The entity or complex type 'CompleteKitchenModel.Contact' cannot be constructed in a LINQ to Entities query. " Thanks 回答1: You'll have to use anonymous type: Dim contacts = From c In My.Context.Contacts _ Select New With { _ .ContactId = c.ContactId, _

问题 Is there a way to embed the progress bar in the UI with out an dialog. And not programmatically but with layout xml files. I am guessing it has to be some sort of animation or a "drawable" 回答1: You can use the ProgressBar widget: <ProgressBar android:id="@+id/a_progressbar" android:layout_width="wrap_content" android:layout_height="wrap_content"/> You can customize it with your own image if you want. You just have to create a styles file (res/styles.xml) like this: <?xml version="1.0"

问题 I'm having difficulty loading a file so that it doesn't lose its dimensions. So here is where I'm at: > mood_data <- read.table("http://www.psychology.mcmaster.ca/bennett/psy710/datasets/mood_data.Rdata") If I do this it just gives me all the information disorganized in one line. I also tried: > mood_data <- url("http://www.psychology.mcmaster.ca/bennett/psy710/datasets/mood_data.Rdata") > load(mood_data) If I do this I get this weird stuff that doesn't make any sense to me. 回答1: You should

问题 The Idea I have a User Manual page, it is kinda big, and each topic has a anchor linked to it In my product page, I can link the client straight to that topic in the manual with a anchor, like: Manual: <a href="#manage_options">Managing Options</a> <!-- Instructions on how to manage options --> Product Page: <a href="http://mysite.com/manual/#!/manage_options">How to Manage Options</a> The Problem When I click the "How to Manage Options" link in Product Page, it goes to the manual and