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  • How does Software/Code actually communicate with Harware?

    - by AbyJames
    My question is: When I press the "Shut down" button in Windows/Linux,the computer shutdowns.How did the command "Shut down" actually make the computer Physically shutdown? To make my point clear: When we kick a ball,there is physical contact between the ball and our leg,for the ball to move.So how is the physical connection achieved between softwares and hardwares?How does plain text of codes make the computer do what it does? (Noob question,I know but it has been irritating me for quite sometime now) -Aby

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  • How do I trigger Google Website Optimizer code on download?

    - by Shane N
    I have a site that I'm optimizing using Google Website Optimizer where the goal is to have someone click on a link to download some software. But the google optimizer code that's provided will get triggered on any page where the link is on. Is there any way to have it execute only when someone actually clicks the download button? Thanks so much!

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  • Hiding master view in split view app..???

    - by Mahesh
    Hello friends, I have created split view based ipad app, where master view is table view while Detail view display images.. I need to display the image fit to screen 100% in landscape mode. This could be on button event or double tap event.. Does any one know about it. Thanks in advance.

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  • Save file as - dialog box with dynamic data

    - by MichaelMcCabe
    I know that this question is quite common, but its specifics are stumping me. I have an "export" button which I want to take a load of data generated, create a CSV file, then pop up a Save File As dialog box, to save that file on their local machine. The name of this file is dynamic, also. I know how to make the CSV file, but how do I then pop up a box on the client side to let the user download it? I am using JSP with Struts

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  • NSTextField enter to trigger action

    - by Chris
    I've been looking all over for a simple example of how to have an action (or button) be triggered when the enter key is hit in the text field. Should I subclass the text field? Would I need to set a delegate to call the action I need? Is there a way to catch the event in my main window controller class? If you could even just point me to the right direction that would be great. Thanks.

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  • Enable "Current Page" in PrintDialog

    - by mizipzor
    Im using a System.Windows.Controls.PrintDialog to let the user print one or more pages from my application. This is what I currently got: PrintDialog printDialog = new PrintDialog(); printDialog.PageRangeSelection = PageRangeSelection.AllPages; printDialog.UserPageRangeEnabled = true; if (printDialog.ShowDialog() == true) { // do print ... } Im looking for the option to enable the Current Page radio button in the dialog. How to enable it?

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  • invoke a method on the click of backbutton

    - by praseed
    hi friends... Does anyone know how can i invoke a method on the click of the backbarButton of a viewcontroller... wat i have are two table view controllers..one list view and another detail view.... the detail view is pushed in to the navigation controller when an item is clicked in the list view. when the Back bar button is clicked i want to invoke a function... Pls any help will be appreciated..

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  • Silverlight Out of Browser (OOB) app crashing only on OS X

    - by BarrettJ
    We have a Silverlight application that runs OOB (out of browser) so the user can install it. When it's running OOB we display a button that calls Application.Current.MainWindow.Close() so that the user can exit the application. This works perfectly fine on windows, but causes an error saying the application has quit unexpectedly on OS X. Anyone have any ideas why this might be? Thanks!

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  • Persistence scheme & state data for low memory situations (iphone)

    - by Robin Jamieson
    What happens to state information held by a class's variable after coming back from a low memory situation? I know that views will get unloaded and then reloaded later but what about some ancillary classes & data held in them that's used by the controller that launched the view? Sample scenario in question: @interface MyCustomController: UIViewController { ServiceAuthenticator *authenticator; } -(id)initWithAuthenticator:(ServiceAuthenticator *)auth; // the user may press a button that will cause the authenticator // to post some data to the service. -(IBAction)doStuffButtonPressed:(id)sender; @end @interface ServiceAuthenticator { BOOL hasValidCredentials; // YES if user's credentials have been validated NSString *username; NSString *password; // password is not stored in plain text } -(id)initWithUserCredentials:(NSString *)username password:(NSString *)aPassword; -(void)postData:(NSString *)data; @end The app delegate creates the ServiceAuthenticator class with some user data (read from plist file) and the class logs the user with the remote service. inside MyAppDelegate's applicationDidFinishLaunching: - (void)applicationDidFinishLaunching:(UIApplication *)application { ServiceAuthenticator *auth = [[ServiceAuthenticator alloc] initWithUserCredentials:username password:userPassword]; MyCustomController *controller = [[MyCustomController alloc] initWithNibName:...]; controller.authenticator = auth; // Configure and show the window [window addSubview:..]; // make everything visible [window makeKeyAndVisible]; } Then whenever the user presses a certain button, 'MyCustomController's doStuffButtonPressed' is invoked. -(IBAction)doStuffButtonPressed:(id)sender { [authenticator postData:someDataFromSender]; } The authenticator in-turn checks to if the user is logged in (BOOL variable indicates login state) and if so, exchanges data with the remote service. The ServiceAuthenticator is the kind of class that validates the user's credentials only once and all subsequent calls to the object will be to postData. Once a low memory scenario occurs and the associated nib & MyCustomController will get unloaded -- when it's reloaded, what's the process for resetting up the 'ServiceAuthenticator' class & its former state? I'm periodically persisting all of the data in my actual model classes. Should I consider also persisting the state data in these utility style classes? Is that the pattern to follow?

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  • GreaseMonkey + Ajax + Remember page?

    - by acidzombie24
    I load jquery into my greasemonkey script and when the user clicks the start button the script makes a bunch of ajax calls. I then empty body and append data. When i click on something and hit back instead of getting the page post script i lose all the data and need to run the ajax calls again (it can take seconds to run). How do i make it not lose the changes?

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  • Updating several records at once using Django

    - by 47
    I want to create a list of records with checkboxes on the left side....kinda like the inbox in Gmail. Then if a user selects some or all of these checkboxes, then the selected record(s) can be updated (only one field will be updated BTW), possibly by clicking a button. I'm stuck on how to do this though....ideas?

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  • ASP.NET page_load is not firing in IFrame?

    - by Ramesh
    In my asp.net web application,I use IFrames to show another page inside one page.But the problem is that the page load event of the embedded page in the IFrame is not firing when the Iframe is shown by clicking on a button in the parent page.I use the IFrame's visibility is true/false to show or hide the Iframe.I am confused what is happening there.Can somebody solve my problem....

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  • turning off sleep mode on kindle?

    - by pfunc
    I'm just getting into kindle development, and I want to know if it is possible to turn off kindle's sleep mode? Or is there a way to wake it up (or a way to program it to wake up) by pushing the buttons on the front, rather than using the power button? Not looking for anything to in-depth here, just point me in the right direction or let me know if it is possible.

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  • How to read the screen pixels?

    - by Newbie
    I want to read a rectangular area, or just one pixel from my screen. As if screenshot button was pressed, but it wouldnt copy the whole screen necessary. So im not talking just about my own program window pixels. How i do this?

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  • How can I make my Video play as soon as the page loads

    - by bill
    im lost here, need some help for something probably very simple: I have embedded a swf object to play an flv file. i want the video to play as soon as the page loads rather than requiring the viewer/user to have to click the play button to see the video. I'm not sure if it is the swf file, the script or the javascipt file that has to be edited, and with what code. thanks

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  • Form value field is visable in localhost but not on live site-how to hide?

    - by Joel
    Hi guys, I'm almost completed moving my first live site to my new xampp setup on localhost. I have a form that uses jquery in the header of the site. It's a bit verbose, but here it is: <div class="outeremailcontainer"> <div id="emailcontainer"> <?php include('verify.php'); ?> <form action="index_success.php" method="post" id="sendEmail" class="email"> <h3 class="register2">Newsletter Signup:</h3> <ul class="forms email"> <li class="name"><label for="yourName">Name: </label> <input type="text" name="yourName" class="info" id="yourName" value="<?= $_POST['yourName']; ?>" /><br /> </li> <li class="city"><label for="yourCity">City: </label> <input type="text" name="yourCity" class="info" id="yourCity" value="<?= $_POST['yourCity']; ?>" /><br /> </li> <li class="email"><label for="emailFrom">Email: </label> <input type="text" name="emailFrom" class="info" id="emailFrom" value="<?= $_POST['emailFrom']; ?>" /> <?php if(isset($emailFromError)) echo '<span class="error">'.$emailFromError.'</span>'; ?> </li> <li class="buttons email"> <button type="submit" id="submit">Send</button> <input type="hidden" name="submitted" id="submitted" value="true" /> </li> </ul> </form> <div class="clearing"> </div> </div> </div> So I am using jQuery (I can include the function if need-be) and it hides fields, etc. The problem is that on the localhost site, the values of the fields are populating the fields. IE: first field has this in the box, etc <?= $_POST['yourName']; ?> It works great in the live site though. Any idea how to fix this? Thanks!

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