callback

C# callback from DLL

I'm writing Application A and DLL B, both in C#.NET. How do I do the following: A calls function in B Want B to use delegate/callback to update status in UI of A This is not about BackgroundWorker...that part works fine in A. What I can't see is how to let B know what function to call in A. ...

PHP: Callback on Entry/Exit of Class Methods?

Is there a way I can set up callbacks on (or automataically log) method parameters, entries, and exits without making explicit calls within each method? I basically want to log this information to my logger class (which is static) without having to do it manually for each method. Right now I have to call Logger::logEntry() and Logger::l...

Are delegates and callbacks the same or similiar?

Hi, Are delegates the same thing as callbacks? Or are they related somehow? ...

Is it possible to pass parameters by reference using call_user_func_array()?

When using call_user_func_array() I want to pass a parameter by reference. How would I do this. For example function toBeCalled( &$parameter ) { //...Do Something... } $changingVar = 'passThis'; $parameters = array( $changingVar ); call_user_func_array( 'toBeCalled', $parameters ); ...

How to register a JavaScript callback in a Java Applet?

I'm developing an invisible Java Applet, that will be controlled entirely from JavaScript. I can call the applet's Java methods easily, and I can call JavaScript methods from within the applet by using netscape.javascript.JSObject.getWindow(this).call(). But in order to register a JavaScript callback in the applet, I guess I would need...

jQuery callbacks firing too early

I have a problem when assigning functions to the click event of a button in IE 7 with jQuery. Something like the following works fine in Opera but produces an infinite loop in IE: function updateIndputFields(index, id) { $("#reloadBtn").click(function(){ updateIndputFields(index, id) }); } As I understand it, an infinite loop would...

Call FLTK callback whenever value changes in fl_input

I'm working on an FLTK application and I need to have a callback for a fl_input element called whenever the value changes. I have been able to get it to work when the user changes focus but not as they are typing. What is the best way to do this? Thanks, ...

How do you debug an ASP.Net application accessing an OAuth secured API?

I know there has to be an obvious solution to this problem and I am missing it, so I would much appreciate someone enlightening me so I don't spin my wheels... I am writing an ASP.Net application that will interact with a service API (Evernote specifically). Evernote requires OAuth for security and before I can actually interact with t...

RMI, EJB and callback

Is it possible for a client to pass an RMI object as an argument to an EJB so that the EJB may callback the client? ...

What is the earliest callback one can hook in the Rails Framework?

I have found the before_dispatch and after_dispatch in dispatcher.rb but I need to access something earlier. Like around when Rails.public_path is defined. ...

How do you handle busy icons in an AJAX site?

This question deals with concurrency issues, for suggestions on how to display a busy icon see this question: http://stackoverflow.com/questions/205631/javascript-loadingbusy-indicator-or-transparent-div-over-page-on-event-click When a user initiates an AJAX request on a page it's useful to show some kind of "working" or busy icon or pr...

Difference between a Postback and a Callback

I keep on hearing this words 'callback' and 'postback' tossed around. What is the difference between two ? Is postback very specific to the ASP.NET pages ? ...

Are event callbacks with (object, EventArgs) parameters a holdover from 1.1 and WinForms?

So I have started playing around with FxCop lately and one thing I've noticed is it insists that any method attached to an event should be in the form void Callback(object sender, EventArgs args) { ...} and to be attached with MyObject.Event += new EventHandler(Callback); Now that was all well and good back in the .Net 1.1 days but...

Run-Time Check Failure #0 vb.net callback from C dll

Hi all. I'm writing Add-inn Application A in VB.Net and DLL B in C language. Application A pass callback method to dll B. When certain event occur the dll invoke the callback from A. Whole works fine on my PC but when I move it to Notebook I get an error: Run-Time Check Failure #0 - The value of ESP was not properly saved across a func...

How do I setup a callback mechanism for RichEdit in win32

In win32, how do I setup a callback mechanism for RichEdit I have not created myself? PART 1 I'm reading from a textedit field in another application's GUI. This works just fine now, except after the first read I'd like to fetch only new or modified lines. In GTK+ or Qt I'd just install a callback on some signal the field edits when it...

Extracting ajax return data in JQuery

I have done jQuery and Ajax , but I am not able to get the response into a Div element. This is the code: Index.html $.ajax({ type:"POST", url: "ajax.php", data:"id="+id , success: function(html){ $("#response").html(data); } }); It is receiving the response to my <div id="response"></div>. The ...

How can I pass a class member function as a callback?

Hi, I'm using an API that requires me to pass a function pointer as a callback. I'm trying to use this API from my class but I'm getting compilation errors. Here is what I did from my constructor: m_cRedundencyManager->Init(this->RedundencyManagerCallBack); This doesn't compile - I get the following error: Error 8 error C3867...

How to access the context object as an array in PageMethods callback

I cannot seem to access the context object using a loop context is set: var context = [id1, id2, id3]; This callback function works: function OnChangeSucceeded(result, context, methodName) { document.getElementById(context[0]).disabled = result; document.getElementById(context[1]).disabled = result; document.getElementById(...

Validate reflected method return type and parms in Java

I have a generic Callback object which provides a (primitive) callback capability for Java, in the absence of closures. The Callback object contains a Method, and returns the parameter and return types for the method via a couple of accessor methods that just delegate to the equivalent methods in Method. I am trying to validate that a ...

Keep app responsive during long task

A certain form in our application displays a graphical view of a model. The user can, amongst loads of other stuff, initiate a transformation of the model that can take quite some time. This transformation sometimes proceeds without any user interaction, at other times frequent user input is necessary. While it lasts the UI should be dis...