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  • Event handling C# / Registering a callback

    - by Jeff Dahmer
    Events can only return void and recieve object sender/eventargs right? If so then craptastic.... how can I pass a function pointer to another obj, like: public bool ACallBackFunc(int n) { return n > 0; } public void RegisterCallback(Something s) { s.GiveCallBack(this.ACallBackFunc); } Something::GiveCallBack(Action? funcPtr) I tried using Action, but I need it to return some value and Actions can only return void. Also, we do not know what kind of a callback we will be recieving; it could return anything and have any params! Reflection will have to be used somehow I reckon.

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  • Event triggering inside prototype

    - by shivesh
    When I try to call "Test" function I get an error. How to fix that? (no jquery!) Browser:firefox error: TypeError: this.Test is not a function <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Untitled Document</title> <script type="text/javascript"> MyClass = function(){ } MyClass.prototype = { Init: function(){ var txt = document.getElementById("text"); if (txt.addEventListener) { txt.addEventListener("keyup", this.Foo, true) } }, Foo: function(){ this.Test(); }, Test: function(){ alert('OK'); } } window.onload = function(){ obj = new MyClass; obj.Init(); } </script> </head> <body> <textarea id="text" rows="10"> </textarea> </div> </body>

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  • Javascript append to onClick event

    - by John Hartsock
    Guys I have the following Code which I know doesnt work correctly. Yes I know how to do this in JQuery but In this case I cannot use jquery. Please no jquery answers. <form> <input type="text" name="input1" onclick="alert('hello')"> <input type="text" name="input2"> <input type="text" name="input3"> </form> <script type="text\javascript"> window.onload = function () { var currentOnClick; for (var i = 0; i < document.forms[0].elements.length; i++) { currentOnClick = document.forms[0].elements[i].onclick; document.forms[0].elements[i].onclick = function () { if (currentOnClick) { currentOnClick(); } alert("hello2"); } } } </script> What Im trying to do is iterate through the form's elements and add to the onclick function. But due to the fact that in my last iteration currentOnClick is null this does not run as expected. I want to preserve each of the elements onclick methods and play them back in the new fuction Im creating. What I want: When input1 is clicked, alert "hello" then alert "hello2" When Input2 is clicked, alert "hello2" When Input3 is clicked, alert "hello2"

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  • Is it possible to access the SMIL timer from javascript?

    - by Will
    I'm trying to use SMIL to animate the typing of text into a field embedded in a SVG. I tried the following code in both Chrome and a SMIL-enable Firefox nightly, but it has no effect: <svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"> <foreignObject> <html:input type="text" value=""> <set attributeName="value" to="Hello World" begin="0" dur="10s" fill="freeze" /> </html:input> </foreignObject> </svg> The text field appears, but remains empty. So, I thought I would register for the beginEvent and do the substitution manually. To test the events, I added: <rect id="rect" x="0" y="0" width="10" height="10"> <animate id="dx" attributeName="x" attributeType="XML" begin="0s" dur="1s" fill="freeze" from="0" to="-10" /> </rect> As well as the javascript that made sense from the event model: window.addEventListener( 'load', function() { function listen( id ) { var elem = document.getElementById( id ) elem.addEventListener( 'beginEvent', function() { console.log( 'begin ' + id ) }, false ) elem.addEventListener( 'endEvent', function() { console.log( 'end ' + id ) }, false ) } listen( 'rect' ) listen( 'dx' ) }) But there's no events fired on either the rect or the animate in either browser. The next logical step seems to be to simulate the animation (ala. FakeSmile), but I want to use the browser's animation timer if at all possible.

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  • how to hook a callback to click event of star rating control

    - by mohang
    I am using jQuery star rating control found at http://www.fyneworks.com/jquery/star-rating/#tab-Overview . I am using 5 stars, each star having a particular value from 1 to 5. The control is getting displayed and behaving properly. However, I have a requirement of getting the value of the star clicked, immediately after a star is clicked. I do not know how to do it. I appreciate your help.

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  • problem with selecting a rows in advanced datagrid using keydown event

    - by user365559
    Hi, I have advanced datagrid with list of items is displayed.I am using keydown for selecting the rows.But the actual problem is when i am selecting the items after the 2nd item it should move to the 3rd item but instead of that its moving back to the 1st item.I have defined selectionmode property to singlerows even then the result same to be same.can any one give me the soloution.

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  • Why do people run Java GUI's on the Event Queue

    - by asmo
    In Java, to create and show a new JFrame, I simply do this: public static void main(String[] args) { new JFrame().setVisible(true); } However, I have seen many people doing it like this: public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { new JFrame().setVisible(true); } }); } Why? Are there any advantages?

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  • get the click event on iphones inbuilt button copy and paste

    - by hardik
    hello all i am new bie in iphone development in my project there is one requirement that while editing text there are iphones inbuilt buttons copy paste and select all i want the clickevent on all this buttons and also want to display action sheet title on their respective click events please guide me how can i do that thanks in advance

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  • C++ Win/Linux thread syncronization Event

    - by JP
    Hello I have some code that is cross-platform by unsing #ifdef OS, I have a Queue protected by a CriticalSection on Windows, and by a pthread_mutex_t on Linux. I would like to implement a Wait(timeout) call that would block a thread until something has been enqueued. I though about using WaitForSingleObject on windows but it don't seem to support CriticalSection. Which Win32 and which Linux functions should I use to Wait and Signal for a condition to happen. Thank

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  • jQuery: Apply css to image on click event

    - by DasRakel
    I want basically the same as http://stackoverflow.com/questions/530701/jquery-select-image a row of images that you can select one of. But I'm trying to style the one I select, and store it. var selectedicon = ""; function selecticon(){ $('#iconselect').children().click(function(){ $(".selectedicon").removeclass("selectedicon"); selectedicon = $(this).attr("src"); $(this).addclass("selectedicon"); }); } on this <div id="iconselect"> <img src="/red-dot.png" class="selectedicon" /> <img src="/green-dot.png" /> <img src="/blue-dot.png" /> <img src="/orange-dot.png" /> </div> What am I doing wrong?

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  • Call functions in an event/function chain?

    - by acidzombie24
    I have 3 functions. They can be called in any order (later they may need specific order). The return value of one function should be the first param of the next. How do i do this? what i am thinking is something like the below. Whats the best way to do this? string void fn(string sz, data d, eventhdl nextFunc) { //do stuff if(nextFunc == null) return ret; else return nextFunc(ret, d, nextFunc.Next); }

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  • Problems with capturing an event in child object in Actionscript

    - by Raigomaru
    I have two classes. The first one (the starting class): package { import flash.display.Sprite; import flash.events.KeyboardEvent; import tetris.*; public class TetrisGame extends Sprite { private var _gameWell:Well; public function TetrisGame() { _gameWell = new Well(); addChild(_gameWell); } } } The second: package tetris { import flash.display.Sprite; import flash.events.KeyboardEvent; public class Well extends Sprite { public function Well() { super(); addEventListener(KeyboardEvent.KEY_DOWN, onKeyboard); } private function onKeyboard():void { //some code is here } } } But when I press any buttons on my keyboard, the child class Well doesn't have any reaction. What's the problem?

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  • HTML5 click event

    - by RichadC
    I made an array of squares ctx.fillStyle = "rgb(0,0,0)"; for(x=0;x<=25;x++){ for(y=0;y<=25;y++){ ctx.fillRect(x, y, 20, 20); } } and I want a square to change its colour when clicked. How can I do that? I'm don't know much HTML5 and need some help. Thanks

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  • How to pass a property to an event with a Button

    - by Tam
    I'm generating buttons dynamically that I want it to call a method like this: private function fetchTheDay(day:String):void { ... } But I wasn't sure how to make the button pass the string to it button.addEventListener(MouseEvent.CLICK,fetchTheDay); buttonVGroup.addElement(button); trying to do something like this didn't work: button.addEventListener(MouseEvent.CLICK,fetchTheDay(myString)); How should I do this?

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  • Sharepoint: Add Calender Event

    - by Sbee
    I am creating a booking module using MOSS 2007.What i would like to know is that is it possible to create a webart that will show only the Daily view ,which will be connected to the central Calender.. Basically what im trying to achieve is this. Each Room must have its own webpart that shows the bookings only associated with that room,so ultimately you might have two rooms that are booked at 8:PM(Same Day) showing on the central Booking calender..... Help would be appreciated

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  • JQuery Mobile bind event to listview

    - by nycynik
    I am trying to add a vclick to a dynamic JQM listview. But I can not figure out how to identify which number is being clicked. http://jsfiddle.net/2hR9w/ for (var x=0; x<2; x++ ) { $("#listitem"+x).bind("vclick",function(e) { console.log("clicked"+x); }); console.log(x); } ? Something is wrong with the code, but i can't figure out why x is always the max loop value, since I feel like it should be set at the time of the loop. it always reads clicked2, never clicked1.

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  • Add a Click Event to elements added to the DOM

    - by E7AD
    var myOP = '<div>'; for (var i = 0; i < op.length; i++) { myOP += '<div>'; myOP += '<div id="myBTN-' + [i] + '">' + op[i]['Field1'] + '</div>'; myOP += '<div id="blah-' + [i] + '">' + op[i]['Field2'] + '</div>'; myOP += '</div>'; } myOP += '</div>'; $("#myBTN-" + i).click(function () { $('#blah-' + i).toggle("slow"); }); $('#container').html(myOP); I'm trying to get the click function to fire on the elements i'm created w/ the above for loop. Can anyone point me in the right direction?

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  • how to get change event on created fields in jquery

    - by frosty
    I have some jquery code the creates an quantity text box. Like so <input type="text" value="1000" class="qty" name="[0].Quantity"> I wish to add some validation to this text box but can hit the method. I believe i need to utlise Live(). But can't quite figure out how this is implemented. This is where i'm at $(document).ready(function () { $(".qty").change(checkValue); }); function checkValue() { alert("on change"); }

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  • .Net forms - intercepting the Close X event.

    - by Hamish Grubijan
    Hi, this must be a dumb question, but I cannot figure it out. I also cannot use the designer because coders before me managed to throw GUI and logic all in one, so now it is confused. I've got to do it the old school way. I have a Form which can be closed in 3 ways: Close button, File / Close menu, and the X icon. I want them all to do the same thing. Intercepting the button and the menu events is easy. In fact, both are hooked up to an onCloseConfig method. Btw, is there a better name for this method? private void onCloseConfig(object sender, System.EventArgs e) { if (! m_configControl.Modified) { Application.Exit(); // Or should it be this.Close(); } .... // Else present a dialog, ask if they want to save. } So, to intercept the X I tried: this.FormClosing +=new FormClosingEventHandler(this.onCloseConfig); I believe this is what causes an infinite loop. I do not want that :) FormClosed is another option, but it seems too late. I just want to intercept the fact that the X was clicked, not the fact that the form is closing. Please help. Thanks!

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