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  • Swing: does DefaultBoundedRangeModel coalesce multiple events?

    - by Jason S
    I have a JProgressBar displaying a BoundedRangeModel which is extremely fine grained and I was concerned that updating it too often would slow down my computer. So I wrote a quick test program (see below) which has a 10Hz timer but each timer tick makes 10,000 calls to microtick() which in turn increments the BoundedRangeModel. Yet it seems to play nicely with a JProgressBar; my CPU is not working hard to run the program. How does JProgressBar or DefaultBoundedRangeModel do this? They seem to be smart about how much work it does to update the JProgressBar, so that as a user I don't have to worry about updating the BoundedRangeModel's value. package com.example.test.gui; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BoundedRangeModel; import javax.swing.DefaultBoundedRangeModel; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JProgressBar; import javax.swing.Timer; public class BoundedRangeModelTest1 extends JFrame { final private BoundedRangeModel brm = new DefaultBoundedRangeModel(); final private Timer timer = new Timer(100, new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { tick(); } }); public BoundedRangeModelTest1(String title) { super(title); JPanel p = new JPanel(); p.add(new JProgressBar(this.brm)); getContentPane().add(p); this.brm.setMaximum(1000000); this.brm.setMinimum(0); this.brm.setValue(0); } protected void tick() { for (int i = 0; i < 10000; ++i) { microtick(); } } private void microtick() { this.brm.setValue(this.brm.getValue()+1); } public void start() { this.timer.start(); } static public void main(String[] args) { BoundedRangeModelTest1 f = new BoundedRangeModelTest1("BoundedRangeModelTest1"); f.pack(); f.setVisible(true); f.setDefaultCloseOperation(EXIT_ON_CLOSE); f.start(); } }

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  • How do I refer to an instance from inside it's own code in Adobe Flash.

    - by matt1024
    In Adobe Flash, I have a movie clip that is added to the stage when the keyboard is pressed. I want it to travel across the screen and disappear once it reaches the edge of the stage. At the moment I use this but the image appears and then stops. Here is my code: addEventListener(Event.ADDED_TO_STAGE,runtime); var c = 0 function runtime(){ while(this.x<800){ this.x += 12; } removeChild(this); } Thanks

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  • Need help regarding query string in asp.net

    - by vaibhav
    I have a page create-quote.aspx. I want to open this page in different modes, depending on whether a querystring parameter is present or not. My question is at which event should I check, If I have a querystring parameter or not. I think, it should be preinit, what do you say.

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  • Underlining RichTextArea content by default in Silverlight 4

    - by Rahul N
    I'm uisng a RichTextArea to display my html content in SL 4,I want to underline the content displayed by the control ( without modifying the html) and also attach an event of Onclick on the text . I tried different options i.e using RichTextArea in the content template of a Hyperlinkbutton but as the content of RichTextArea cannot be set directly, this was ruled out. Any suggestions ?

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  • Data validation in cell of datagridview control

    - by Yogi
    I am using datagridview control and in this grid user can edit the value of a fixed column. i want user only can write numaric values (e.g. 1, 2, 443 etc) I am not sure at which event of datagridview i have to write this code and what is the code to trap values

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  • start session on page_load in vb.net

    - by gtere
    i have 1 master page with 5 pages that call it. now on the master page, I have few dropdowns and textboxes, and the calling pages only have a small article in the corner. I want to start a session on page_load event, so that if the user chooses to select a dropdown or put data in textbox, even if he clicks on the other 4 links of other pages, the data should stay. how can this be done?

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  • Page.Request behaviour

    - by StupidDeveloper
    I have a page and few controls. I'm doing a normal postback. On InitializeCulture event of the page the Page.Request object contains e.g. controls with their values - and that's great. But on the other hand, when I'm trying to access this collection on the Page_Load or OnInit events, it's way smaller and doesn't have any of the controls that have been there before. Can anyone tell me what happens with Page.Request between these events?

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  • Create list<string> dynamically

    - by shiv09
    Hello, friends... I want to create a list in a button click event...every time the button is clicked a new list should be created having different name than the previous one... Can anyone please help me out...I'm stuck on it...

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  • jQuery Accordion /Tabs - Call different function upon load of content

    - by Scott
    I have the following markup: <body> <div id="tabs" style="float: left"> <ul> <li><a href="ajax/question_0.html" title="Question 1"><span>Question 1</span></a></li> <li><a href="ajax/question_1.html" title="Question 2"><span>Question 2</span></a></li> <li><a href="ajax/question_2.html" title="Question 3"><span>Question 3</span></a></li> <li><a href="ajax/question_3.html" title="Question 4"><span>Question 4</span></a></li> <li><a href="ajax/question_4.html" title="Question 5"><span>Question 5</span></a></li> <li><a href="ajax/question_5.html" title="Question 6"><span>Question 6</span></a></li> </ul> <div id="dynamicContent"> </div> </div> <div class="demo-description"> <p>Click tabs to see answers to Questions</p> </div> </body> I would like to utilize an accordion or the tabs plugin from the UI. Upon completion of the load event, I'd like to call a JavaScript function, but a different function for each tab -- almost like calling onDocumentReady for a page. I have the following JavaScript: $(function() { $('#tabs').tabs().bind('tabsselect', function(event, ui) { console.log("Loading: ajax/question_" + ui.index + ".html"); return true; //Ensure that the tab gets selected }); ); That's properly loading the Ajax file and all, but whenever I attempt to do something such as evaluating a statement in the JS, it seems to be ignored. Is there any way I can do this, so that once the file is loaded my function is called -- needs to be a different function for each tab.

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  • Add handler multiple times in jquery

    - by AdmSteck
    How does jquery handle event assignment when it comes to assigning the same handler multiple times? Let's say I have <div class="draggable">Some Text</div> Are there any side effects (performance or otherwise) from calling the following multiple times? $('.draggable').draggable();

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  • Java Flow Control Problem

    - by Kyle_Solo
    I am programming a simple 2d game engine. I've decided how I'd like the engine to function: it will be composed of objects containing "events" that my main game loop will trigger when appropriate. A little more about the structure: Every GameObject has an updateEvent method. objectList is a list of all the objects that will receive update events. Only objects on this list have their updateEvent method called by the game loop. I’m trying to implement this method in the GameObject class (This specification is what I’d like the method to achieve): /** * This method removes a GameObject from objectList. The GameObject * should immediately stop executing code, that is, absolutely no more * code inside update events will be executed for the removed game object. * If necessary, control should transfer to the game loop. * @param go The GameObject to be removed */ public void remove(GameObject go) So if an object tries to remove itself inside of an update event, control should transfer back to the game engine: public void updateEvent() { //object's update event remove(this); System.out.println("Should never reach here!"); } Here’s what I have so far. It works, but the more I read about using exceptions for flow control the less I like it, so I want to see if there are alternatives. Remove Method public void remove(GameObject go) { //add to removedList //flag as removed //throw an exception if removing self from inside an updateEvent } Game Loop for(GameObject go : objectList) { try { if (!go.removed) { go.updateEvent(); } else { //object is scheduled to be removed, do nothing } } catch(ObjectRemovedException e) { //control has been transferred back to the game loop //no need to do anything here } } // now remove the objects that are in removedList from objectList 2 questions: Am I correct in assuming that the only way to implement the stop-right-away part of the remove method as described above is by throwing a custom exception and catching it in the game loop? (I know, using exceptions for flow control is like goto, which is bad. I just can’t think of another way to do what I want!) For the removal from the list itself, it is possible for one object to remove one that is farther down on the list. Currently I’m checking a removed flag before executing any code, and at the end of each pass removing the objects to avoid concurrent modification. Is there a better, preferably instant/non-polling way to do this?

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  • problem in listbox value and mysql database in vb.net

    - by testkhan
    i have a problem in inserting the listbox value into mysql database in vb 2008 i.e if i select a video file i.e D:\videos\video1.mpg and add a msgbox() event before inserting into data base it shows the exact path i.e D:\videos\video1.mpg but when i check my database it shows me as D:videosvideo1.mpg how can i solve that

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  • iPhone keeps going into dim/sleep mode even with the proper API calls.

    - by Kyle
    I call: [[ UIApplication sharedApplication ] setIdleTimerDisabled: YES ] on the applicationDidFinishLaunching event.. I set a breakpoint on it, which fires so I know it's getting called.. I've also called this function in other places as well.. Basically, a 3G iPhone will still go into sleep mode, but my 3GS won't. Has anyone seen this behavior before? Both are running the latest OS versions. Thanks for reading!

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  • How do i get the mouse position?

    - by acidzombie24
    Basically in relation to this question It seems like e.X,y and e.Location.X,Y is relative to mousedown? I seen negative values when i havent moved it left/above the parent picbox. So it seems like the values are relative to my mousedown, but i need values relative to the parent because i update the left/top every event and other datat and relative to mousedown is breaking my code.

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  • A beginner's log4J question

    - by Nitesh Panchal
    Hello, i configured log4j for basic purpose usin the conversion pattern :- log4j.appender.rollingFile.layout.ConversionPattern=%p %t %c - %m%n But now i want to log the class name from which the error came as well as the username(available in session object) as well as the date and time when that event occurs. How do i do this? What changes do i need to make in format string? Thanks in advance :)

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  • How to break out of a loop depending on a CheckBox Checked value while the loop is running?

    - by Rayner Vaz
    Lets say I want to call a function repeatedly if the user selects a CheckBox named "repeat" but the calls to the function should stop as soon as the user 'unchecks' the CheckBox. I tried using the 'Checked', 'Click' and 'Tap' event of the CheckBox but once the loop starts, it does not sense any changes in the checkbox's state. I even tried using a loop inside another button's _Click method, but then that creates a lock on the Button's 'pressed' state. Any ideas/alternate suggestions?

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  • How to simulate a close() in facebox

    - by Bragaadeesh
    Hi, I am using facebox popup in one of my pages. I am having a button in the popup dialog. When I click that button the facebox popup should close (the same way it closes when we press outside the popup). How to do that? Also, I am doing some Ajax stuff when that button is being pressed so I cannot override the onClick event.

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