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How does Windows 7 determine that a system was not shut doen correctly (Kernel-Pwer Event ID 41)

- by Erik

I have a strange situation that Windows 7 thinks it was not shut down correctly, and gives me a warning in the system event log like this: http://support.microsoft.com/kb/2028504/de What the KB-article does not tell is how Windows actually determines that situation. Does it parse its own system event log after reboot? Or where does it get that information from? I am currently investigating an issue where I believe the system fails to write the system event log correctly (it stops having entries, although other logs like the application event log still have entries), and after a reboot, Windows thinks it has not been shut doen correctly. Does anybody have any experience with this? ANd can you confrim that Windows determines the previous correct system shutdown by parsing its own system event log on startup?

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DataGridView's SelectionChange event firing twice on DataBinding even after removing event binding

- by Shantanu Gupta

This Code triggers selection change event twice. how can I prevent it ? Currently i m using a flag or focused property to prevent this. But what is the actual way ? I am using it on winfoms EDIT My Mistake in writing Question, here is the correct code that i wanted to ask private void frmGuestInfo_Load(object sender, EventArgs e) { this.dgvGuestInfo.SelectionChanged -= new System.EventHandler(this.dgvGuestInfo_SelectionChanged); dgvGuestInfo.DataSource=dsFillControls.Tables["tblName"]; this.dgvGuestInfo.SelectionChanged += new System.EventHandler(this.dgvGuestInfo_SelectionChanged); } private void dgvGuestInfo_SelectionChanged(object sender, EventArgs e) { //this function is raised twice, i was expecting that this will not be raised }

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Event Capturing vs Event Bubbling

- by Rajat

I just wanted to get the general consensus on which is a better mode of event delegation in JS between bubbling and capturing. Now I understand that depending on a particular use-case, one might want to use capturing phase over bubbling or vice versa but I want to understand what delegation mode is preferred for most general cases and why (to me it seems bubbling mode). Or to put it in other words, is there a reason behind W3C addEventListener implementation to favor the bubbling mode. [capturing is initiated only when you specify the 3rd parameter and its true. However, you can forget that 3rd param and bubbling mode is kicked in] I looked up the JQuery's bind function to get an answer to my question and it seems it doesn't even support events in capture phase (it seems to me because of IE not support capturing mode). So looks like bubbling mode is the default choice but why?

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How do I name an array key with a key inside the array

- by Confused

I have some data, yes, data. This data came from a MySQL query and it will always contain 4 items, always. I want to cache that data in an array table for use later within a web page but I want to keep the keys from the query and separate out each grouping within a multidimensional array. However to save time iterating through the array each time I want to find a given group of data, I want to call the keys of the first array the same as the ID key which is always the first key within each four items. At the minute I'm using this code: function mysql_fetch_full_result_array($result) { $table_result=array(); $r=0; while($row = mysql_fetch_assoc($result)){ $arr_row=array(); $c=0; while ($c < mysql_num_fields($result)) { $col = mysql_fetch_field($result, $c); $arr_row[$col -> name] = $row[$col -> name]; $c++; } $table_result[$r] = $arr_row; $r++; } return $table_result; } I'm currently testing this using 3 unique users, so I'm getting three rows back from the query and the data from this function ends up in the format: [0]=> . . [id] => 1 . . [name] => random name . . [tel] => random tel . . [post] => post code data [1]=> . . [id] => 34 . . [name] => random name . . [tel] => random tel . . [post] => post code data [2]=> . . [id] => 56 . . [name] => random name . . [tel] => random tel . . [post] => post code data So how do I alter the code to instead of the keys [0], [1], [2] give me the output: [1]=> . . [id] => 1 . . [name] => random name . . [tel] => random tel . . [post] => post code data [34]=> . . [id] => 34 . . [name] => random name . . [tel] => random tel . . [post] => post code data [56]=> . . [id] => 56 . . [name] => random name . . [tel] => random tel . . [post] => post code data I don't mind if the main array keys are strings of numbers rather than numbers but I'm a bit stuck, I tried changing the $table_result[$r] = $arr_row; part to read $table_result[$result['id']] = $arr_row; but that just outputs an array of one person. I know I need another loop but I'm struggling to work out how to write it.

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Retail windows xp prof sp 2 Lost key but have the genuine cd , what to do?

- by AdityaGameProgrammer

I had recently formatted my system only to find out i have lost the cd key to my original cd. i had used the option to enter the product key later. Yes, i know its a stupid thing to do but i bought the cd in 2008 from a retail store and i lost the original packaging. the actual label on the cd is includes service pack version 2002 .@2004 microsoft corporation reserved. There are some numbers on the back side of the cd in the inner ring. i cant for the life of me figure out how what is the use of the genuine cd i have with me when i cant seem to activate it. what exactly is the advantage of having the original cd in your possession in situations like this?. i have tried the unattend.txt and it doesnt contain the correct key. and there does not exist any winnnt.sif file in the cd. where on the cd or in it can i find the product id information i stay in india . and my attempts at trying the microsoft support site keeps getting me directed to page which says they had stopped support for windows xp in 2011. lets say by some miracle i do contact microsoft. what information would i have to provide them? and would they be giving me the product key for my cd key from their database? or a new key?

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How To Map Fn+Key (Multiple Keys) To Other Key in Windows?

- by Mohamed Meligy

I've got a ThinkPad W530 laptop, which replaces the Application Key (also known as Menu Key or Mouse Right Click key, usually between Right Alt and Right Ctrl) with the Print Screen key. So, I need to replace Prt/Scr with Application key. That's easy, all key mapping software like SharpKeys or whatever can do that. There are even a few threads in SuperUser about dozen of those. But then, the different part to this question from the others (which is why it's not a duplicate, I think) is that I also don't want to completely lose the Prt/Scr key. I'm thinking about replacing it with either: Fn + Prt/Scr Fn + F2 These seemed to have no special meaning, so, I'm not overriding anything, just adding functionality to either of them (one of them, not both), to be the new Prt/Scr key. I couldn't find any key mapping software that can detect or let me select more than one key to map, even when the other key is something like Fn key (although they all can map Fn key itself, without combination). I know it may make sense why this restriction exists, but it'll be really useful if I can override it though. Do you know any program that can do that? Thanks a lot.

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C#–Using a delegate to raise an event from one class to another

- by Bill Osuch

Even though this may be a relatively common task for many people, I’ve had to show it to enough new developers that I figured I’d immortalize it… MSDN says “Events enable a class or object to notify other classes or objects when something of interest occurs. The class that sends (or raises) the event is called the publisher and the classes that receive (or handle) the event are called subscribers.” Any time you add a button to a Windows Form or Web app, you can subscribe to the OnClick event, and you can also create your own event handlers to pass events between classes. Here I’ll show you how to raise an event from a separate class to a console application (or Windows Form). First, create a console app project (you could create a Windows Form, but this is easier for this demo). Add a class file called MyEvent.cs (it doesn’t really need to be a separate file, this is just for clarity) with the following code: public delegate void MyHandler1(object sender, MyEvent e); public class MyEvent : EventArgs { public string message; } Your event can have whatever public properties you like; here we’re just got a single string. Next, add a class file called WorkerDLL.cs; this will simulate the class that would be doing all the work in the project. Add the following code: class WorkerDLL { public event MyHandler1 Event1; public WorkerDLL() { } public void DoWork() { FireEvent("From Worker: Step 1"); FireEvent("From Worker: Step 5"); FireEvent("From Worker: Step 10"); } private void FireEvent(string message) { MyEvent e1 = new MyEvent(); e1.message = message; if (Event1 != null) { Event1(this, e1); } e1 = null; } } Notice that the FireEvent method creates an instance of the MyEvent class and passes it to the Event1 handler (which we’ll create in just a second). Finally, add the following code to Program.cs: static void Main(string[] args) { Program p = new Program(args); } public Program(string[] args) { Console.WriteLine("From Console: Creating DLL"); WorkerDLL wd = new WorkerDLL(); Console.WriteLine("From Console: Wiring up event handler"); WireEventHandlers(wd); Console.WriteLine("From Console: Doing the work"); wd.DoWork(); Console.WriteLine("From Console: Done - press any key to finish."); Console.ReadLine(); } private void WireEventHandlers(WorkerDLL wd) { MyHandler1 handler = new MyHandler1(OnHandler1); wd.Event1 += handler; } public void OnHandler1(object sender, MyEvent e) { Console.WriteLine(e.message); } The OnHandler1 method is called any time the event handler “hears” an event matching the specified signature – you could have it log to a file, write to a database, etc. Run the app in debug mode and you should see output like this: You can distinctly see which lines were written by the console application itself (Program.cs) and which were written by the worker class (WorkerDLL.cs). Technorati Tags: Csharp

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Stop event bubbling in Javascript

- by Kartik Rao

I have a html structure like : <div onmouseover="enable_dropdown(1);" onmouseout="disable_dropdown(1);"> My Groups <a href="#">(view all)</a> <ul> <li><strong>Group Name 1</strong></li> <li><strong>Longer Group Name 2</strong></li> <li><strong>Longer Group Name 3</strong></li> </ul> <hr /> Featured Groups <a href="#">(view all)</a> <ul> <li><strong>Group Name 1</strong></li> <li><strong>Longer Group Name 2</strong></li> <li><strong>Longer Group Name 3</strong></li> </ul> </div> I want the onmouseout event to be triggered only from the main div, not the 'a' or 'ul' or 'li' tags within the div! My onmouseout function is as follows : function disable_dropdown(d) { document.getElementById(d).style.visibility = "hidden"; } Can someone please tell me how I can stop the event from bubbling up? I tried the solutions (stopPropogation etc) provided on other sites, but I'm not sure how to implement them in this context. Any help will be appreciated. Thanks a lot!

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Why doesn't onkeydown working properly on IE?

- by Fabian

function checkEnter(event) { var charcode; if (event && event.which) { charcode = event.which; alert("Case 1. event.which is " + charcode); } else if (event && !event.which) { charcode = event.keyCode; alert("Case 2. event.keyCode is " + charcode); } document.getElementById("text1").value=""; } <input type="text" id="text1" onkeyup="checkEnter(event)" /> The above function works on both IE7 and Chrome. function checkKeyPressed() { document.onkeydown = function(event) { var charcode; if (event && event.which) { charcode = event.which; alert("charcode is " + charcode); } else if (event && !event.which) { charcode = event.keyCode; alert("charcode (keyCode) is " + charcode); } } } <input type="button" id="button1" onclick="checkKeyPressed(event)" value="Button" /> However this one works only in Chrome. Any idea why?

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MooTools Event Delegation using HTML5 data attributes.

- by Anurag

Is it possible to have event delegation using the HTML5 data attributes in MooTools? The HTML structure I have is: ?<div id="parent"> <div>not selectable</div> <div data-selectable="true">selectable</div> <div>not selectable either.</div> <div data-selectable="true">also selectable</div> </div>???????????????????????????????????????????????????????????????????????? And I want to setup <div id="parent"> to listen to all clicks only on child elements that have the data-selected attribute. Please let me know if I'm doing something wrong: The events are being setup as: $("parent").addEvent("click:relay([data-selectable])", function(event, el) { alert(this.get('text')); }); but the click callback is fired on clicking all div's, not just the ones with a data-selectable attribute defined. You can see this example on http://jsfiddle.net/NUGD4/ A workaround is to adding this as a CSS class, which works with delegation but I would prefer to be able to use data-attributes as it's used throughout the application.

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event.target doesn't work

- by rdesign

Hey guys, I've wrote some jquery code with some draggable elements and one droparea. Unfortunately my droparea can't make a difference between various object. Here's my code. <script type="text/javascript"> $(function() { $("#droparea").droppable({ drop: function(event) { var $target = $(event.target); if($target.is("#flyer")) { alert("adasd"); } } }); }); </script> </head> <body> <div id="droparea"></div> <div class="polaroid" id="flyer"> <img src="images/muesliFlyer.png" alt="flyer" /> </div> Without the if it works. But then I can't get the dropped object. Any ideas why my target isn't recognized? thanks a lot.

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dynamically horizontal scalable key value store

- by Zubair

Hi, Is there a key value store that will give me the following: Allow me to simply add and remove nodes and will redstribute the data automatically Allow me to remove nodes and still have 2 extra data nodes to provide redundancy Allow me to store text or images up to 1GB in size Can store small size data up to 100TB of data Fast (so will allow queries to be performed on top of it) Make all this transparent to the client Works on Ubuntu/FreeBSD or Mac Free or open source I basically want something I can use a "single", and not have to worry about having memcached, a db, and several storage components so yes, I do want a database "silver bullet" you could say. Thanks Zubair Answers so far: MogileFS on top of BackBlaze - As far as I can see this is just a filesystem, and after some research it only seems to be appropriate for large image files Tokyo Tyrant - Needs lightcloud. This doesn't auto scale as you add new nodes. I did look into this and it seems it is very fast for queries which fit onto a single node though Riak - This is one I am looking into myself, but I don't have any results yet Amazon S3 - Is anyone using this as their sole persistance layer in production? From what I have seen it seems to be used for storage of images as complex queries are too expensive @shaman suggested Cassandra - definitely one I am looking into So far it seems that there is no database or key value store that fulfills the criteria I mentioned, not even after offering a bounty of 100 points did the question get answered!

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Get the current array key in a multi dimensional array

- by johlton

Hi *, I have a session array *$_SESSION['cart']* with some items in it. The structure ist like this (via *print_r*): Array ( [2-1] => Array ( [color] => 7 [articlenumber] => WRG70 10 [quantity] => 1 [price] => 17.50 ) [3-8] => Array ( [color] => 2 [articlenumber] => QRG50 02 [quantity] => 1 [price] => 13.50 ) ) Looping over the values for display is fine ... foreach($_SESSION['cart'] as $item_array) { foreach($item_array as $item => $value) { echo $value . ' | '; } } ... since it results in something like this: 7 | WRG70 10 | 1 | 17.50 | 2 | QRG50 02 | 1 | 13.50 | But Now: How can I output the matching key (e.g. '2-1') as well? I tried some array functions like key() & current but couldn't get it to work (one of these days). Any quick hint on this? Thanks a lot and best from Berlin Fabian

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Encrypt a file base upon a pregenerated "key" C#

- by Anubis

Hello everyone. I'm trying to determine the best course of action to implement a simple "licensing" system with a partner of mine. The concept is: Generate an encrypted value based upon several internal hardware components. Have the customer send this value to us which we will implement into our key generator. Once we have that, we add any other restrictions on the license (user, expires, etc.). From there we generate a file which we send to the customer they can add to their installation and voila, happy people about. I have the first part all done. My next part is trying to figure out which encryption methodology I would need to use. I already know Symmetric Encryption is pretty much the only route I can take. Most of the information I have found involves .NET already creating a key from its own internal methods. That's a bit of background, my question is: "Which encryption method could I use which would allow me to encrypt the restrictions based upon the "id" I was given from the customer's computer?" I'm writing this in C# by the way. Any ideas would be greatly appreciated! Take Care!

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How to add on key down and on key up event in java script

- by Ramesh

Hello , I am creating an live search for my blog..i got this from w3 schools and i need to add on keyboard up,down mouse up and down event ... <html> <head> <script type="text/javascript"> function showResult(str) { if (str.length==0) { document.getElementById("livesearch").innerHTML=""; document.getElementById("livesearch").style.border="0px"; return; } if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("livesearch").innerHTML=xmlhttp.responseText; document.getElementById("livesearch").style.border="1px solid #A5ACB2"; } } xmlhttp.open("GET","livesearch.php?q="+str,true); xmlhttp.send(); } </script> </head> <body> <form> <input type="text" size="30" onkeyup="showResult(this.value)" /> <div id="livesearch"></div> </form> </body> </html>

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Entity Framework and associations between string keys

- by fredrik

Hi, I am new to Entity Framework, and ORM's for that mather. In the project that I'm involed in we have a legacy database, with all its keys as strings, case-insensitive. We are converting to MSSQL and want to use EF as ORM, but have run in to a problem. Here is an example that illustrates our problem: TableA has a primary string key, TableB has a reference to this primary key. In LINQ we write something like: var result = from t in context.TableB select t.TableA; foreach( var r in result ) Console.WriteLine( r.someFieldInTableA ); if TableA contains a primary key that reads "A", and TableB contains two rows that references TableA but with different cases in the referenceing field, "a" and "A". In our project we want both of the rows to endup in the result, but only the one with the matching case will end up there. Using the SQL Profiler, I have noticed that both of the rows are selected. Is there a way to tell Entity Framework that the keys are case insensitive? Edit:We have now tested this with NHibernate and come to the conclution that NHibernate works with case-insensitive keys. So NHibernate might be a better choice for us.I am however still interested in finding out if there is any way to change the behaviour of Entity Framework.

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Facebook FB.Event.subscribe does not work

- by DNReNTi

I'd like to follow how many likes I get on my page, but something is wrong. I am using the Facebook javascript event handler but it doesnt work. It should alerts me when I click on the like or on the dislike button but it does not do anything. Any idea where I am wrong? Thanks! And sorry for my english. Here is my UPDATED code: <!DOCTYPE html> <html xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>FBlike check</title> </head> <body> <div id="fb-root"></div> <script> (function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_US/all.js#xfbml=1&appId=00000000000000000"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk')); FB.Event.subscribe('edge.create', function(response) { alert('You liked the URL: ' + response); } ); </script> <fb:like href="https://www.facebook.com/XYZ" send="false" layout="button_count" width="200" show_faces="false"></fb:like> </body> </html>

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Does ssh key need to be named id_rsa?

- by dustyprogrammer

I have come across this problem a couple of times when creating build servers with keyed authentication. I was wondering if anyone else has experience this. I have a couple of keys for my current user that may connect to different machines. Let say machine1 and machine2. I have pasted my public key into their respective authorized_keys file. The first one I have named the first key id_rsa and the second key bender. When I try to connect to bender I get the following output with my verbose ssh connection debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Trying private key: /home/bozo/.ssh/.ssh/identity debug1: Trying private key: /home/bozo/.ssh/.ssh/id_rsa debug1: Trying private key: /home/bozo/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey). It only offers the id_rsa key, as you can see above. Is this correct? If so why? How do I get it to offer more keys? I know it is a problem I see intermittently, because I at home I have multiple keys without much trouble. I would also appreciate a overview on how the pub and private keys interact with the client and server. I thought I had a pretty decent idea, but apparently I am missing something. Please and thank you.

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OpenSSL without prompt

- by JP19

Hi, I am using following code to generate keys: apt-get -qq -y install openssl; mkdir -p /etc/apache2/ssl; openssl genrsa -des3 -out server.key 1024; openssl req -new -key server.key -out server.csr; cp server.key server.key.org; openssl rsa -in server.key.org -out server.key; openssl x509 -req -days 12000 -in server.csr -signkey server.key -out server.crt; mv server.crt /etc/apache2/ssl/cert.pem; mv server.key /etc/apache2/ssl/cert.key; rm -f server.key.orig; rm -f server.csr How can I skip the passphrase prompting? thanks JP

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Creating deterministic key pairs in javascript for use in encrypting/decrypting/signing messages

- by SlickTheNick

So I have been searching everywhere and havn't been able to find anything with the sufficient information I need.. so Im a bit stumped on this one at the moment What I am trying to do is create a public/private key pair (like PGP) upon a users account creation, based on their passphrase and a random seed. The public key would be saved on the server, and ideally the private key would never be seen by the server whatsoever. The user could then sign in, and send a message to another user. Before the message is sent, the senders key pair would be re-generated on the fly based on their credentials (and maybe a password prompt) and used to encrypt the message. The receiver would then use their own re-generated private key to decrypt said message. The server itself should never see any plaintext passwords, private keys or readable messages. Bit unsure how on how I could go about implementing this. Iv been looking into PGP, specifically openPGP.js. The main trouble I am having is being able to regenerate the key-pair based off a specific seed. PGP seems to have a random output even if the inputs are the same. Storing the private key in a cookie or in HTML5 storage or something also isnt really an option, too unreliable. Can anyone point me in the right direction?

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WPF Binding KeyDown event to Command

- by Daniil Harik

Hello, I want to bind KeyDown event handler (when user presses Ctrl+C and Ctrl+V) on Telerik's GridView to RelayCommand object in my ViewModel. I know about this post http://blog.functionalfun.net/2008/09/hooking-up-commands-to-events-in-wpf.html But I'm still bit confused about implementation of my scenario. I just don't understand how it works. Could someone point out how should my scenario be implemented. Thank You very much!

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Java HashSet key/value pair

- by harley

Why does Java not provide functions to get at the key/value pairs in a HashSet like in Hashtable? It seems like a real pain to have to iterate over it every time you need to get at something. Or am I just a newb missing something?

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Win32 Event vs Semaphore

- by JP

Basically I need a replacement for Condition Variable and SleepConditionVariableCS because it only support Vista and UP. (For C++) Some suggested to use Semaphore, I also found CreateEvent. Basically, I need to have on thread waiting on WaitForSingleObject, until something one or more others thread tell me there is something to do. In which context should I use a Semaphore vs an Win Event? Thanks

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WinForms window drag event

- by Steve Syfuhs

Is there an event in WinForms that get's fired when a window is dragged? Or is there a better way of doing what I want: to drop the window opacity to 80% when the window is being dragged around? Unfortunately this is stupidly tricky to search for because everyone is looking for drag and drop from the shell, or some other object.

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When do we really need a key/value database instead of a key/value cache server?

- by Runner

Most of the time,we just get the result from database,and then save it in cache server,with an expiration time. When do we need to persistent that key/value pair,what's the significant benifit to do so?

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