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• Is it possible to start (and stop) a thread inside a DLL?

  - by Jerry Dodge

  I'm pondering some ideas for building a DLL for some common stuff I do. One thing I'd like to check if it's possible is running a thread inside of a DLL. I'm sure I would be able to at least start it, and have it automatically free on terminate (and make it forcefully terminate its self) - that I can see wouldn't be much of a problem. But once I start it, I don't see how I can continue communicating with it (especially to stop it) mainly because each call to the DLL is unique (as far as my knowledge tells me) but I also know very little of the subject. I've seen how in some occasions, a DLL can be loaded at the beginning and released at the end when it's not needed anymore. I have 0 knowledge or experience with this method, other than just seeing something related to it, couldn't even tell you what or how, I don't remember. But is this even possible? I know about ActiveX/COM but that is not what I want - I'd like just a basic DLL that can be used across languages (specifically C#). Also, if it is possible, then how would I go about doing callbacks from the DLL to the app? For example, when I start the thread, I most probably will assign a function (which is inside the EXE) to be the handler for the events (which are triggered from the DLL). So I guess what I'm asking is - how to load a DLL for continuous work and release it when I'm done - as opposed to the simple method of calling individual functions in the DLL as needed. In the same case - I might assign variables or create objects inside the DLL. How can I assure that once I assign that variable (or create the object), how can I make sure that variable or object will still be available the next time I call the DLL? Obviously it would require a mechanism to Initialize/Finalize the DLL (I.E. create the objects inside the DLL when the DLL is loaded, and free the objects when the DLL is unloaded). EDIT: In the end, I will wrap the DLL inside of a component, so when an instance of the component is created, DLL will be loaded and a corresponding thread will be created inside the DLL, then when the component is free'd, the DLL is unloaded. Also need to make sure that if there are for example 2 of these components, that there will be 2 instances of the DLL loaded for each component. Is this in any way related to the use of an IInterface? Because I also have 0 experience with this. No need to answer it directly with sample source code - a link to a good tutorial would be great.

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• HTML Purifier Coding Help?

  - by TaG

  I read the http://htmlpurifier.org/docs/enduser-youtube.html doc, but I still can't figure out where to put the code to allow object, param and embed tags and Use experimental features with my htmlpurifier. Can someone please show me how to do this?

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• want to extend from java.sql.ResultSet

  - by dora

  hi, i would like to create myRecordSet object that extends java.sql.ResultSet and to implement a method that returns UTC date from sql statement. how can i extend from java.sql.ResultSet, i need an example 10X

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• What is the .NET equivalent of PHP's memory_get_usage?

  - by Sam

  PHP has the function memory_get_usage to report the amount of memory a PHP script has. How can you do the same thing in .NET (ASP.NET C#)? Also, can you report on how much memory an object is taking (e.g. SiteMap or DataTable)?

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• troubles creating a List of doubles from a list of objects

  - by Michel

  Hi, i have a list with objects. The object has a property 'Sales' which is a string. Now i want to create a list of doubles with the values of all objects' 'Sales' properties. I tried this: var tmp = from n in e.Result select new{ Convert.ToDouble ( n.Sales) }; but this gives me this error: Error 106 Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.

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• Have main thread wait for a boost thread complete a task (but not finish).

  - by JAKE6459

  I have found plenty on making one thread wait for another to finish executing before continuing, but that is not what I wanted to do. I am not very familiar with using any multi-threading apis but right now I'm trying to learn boost. My situation is that I am using my main thread (the starting one from int main()) to create an instance of a class that is in charge of interacting with the main GUI. A class function is then called that creates a boost thread which in turn creates the GUI and runs the message pump. The thing I want to do is when my main thread calls the classes member function to create the GUI, I don't want that function to return until I tell it to from the newly created thread. This way my main thread can't continue and call more functions from the GUI class that interact with the GUI thread until that thread has completed GUI creation and entered the message loop. I think I may be able to figure it out if it was multiple boost thread objects interacting with each other, but when it is the main thread (non-boost object) interacting with a boost thread object, I get lost. Eventually I want a loop in my main thread to call a class function (among other tasks) to check if the user as entered any new input into the GUI (buy any changes detected by the message loop being updated into a struct and changing a bool to tell the main thread in the class function a change has occurred). Any suggestions for any of this would be greatly appreciated. This is the member function called by the main thread. int ANNGUI::CreateGUI() { GUIMain = new Main(); GUIThread = new boost::thread(boost::bind(&Main::MainThreadFunc, GUIMain)); return 0; }; This is the boost thread starting function. void Main::MainThreadFunc() { ANNVariables = new GUIVariables; WndProc = new WindowProcedure; ANNWindowsClass = new WindowsClass(ANNVariables, WndProc); ANNWindow = new MainWindow(ANNVariables); GUIMessagePump = new MessagePump; ANNWindow-ShowWindows(); while(true) { GUIMessagePump-ProcessMessage(); } }; BTW, everything compiles fine and when I run it, it works I just put a sleep() in the main thread so I can play with the GUI a little.

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• How to check for redirects on ajax calls?

  - by acidzombie24

  I was looking at this answer and some other answers http://stackoverflow.com/questions/199099/how-to-manage-a-redirect-request-after-a-jquery-ajax-call/199156#199156 I can not get this to work. i check the XMLHttpRequest object in both success and complete. In both cases when there is a redirect instead of getting a 302 i get a 200 and the html for that page. How do i make it actually report the 3xx redirect instead of skipping ahead and giving me a 200?

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• Jquery on new Window objects?

  - by Poku

  Hey, Is it possible to use jQuery on a new Window javascript object? Example: win = new Window(); jQuery(win).ready(function(){ do jQuery stuff on the new window here?? }); Is something like this possible?

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• How to close the connection after set Transation to Nothing or Commit/Rollback

  - by user1957271

  I develop the DAL class for db operation Public Sub StartTransaction() Dim objConnection As SqlConnection = EstablishConnection() objConnection.Open() Me.Transaction = objConnection.BeginTransaction() End Sub Public Sub CommitTransaction() Me.Transaction.Commit() End Sub Public Sub RollBackTransaction() Me.Transaction.Rollback() End Sub after start the transaction when we commit or rollback and set transaction object to nothing it dont close the connection attach with this transaction how I close the Connection attach to this transaction???

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• C++ how position indpendent code works for virtual function calls and more..?

  - by 0xDEAD BEEF

  How does PIC work for shared libraries which use virtual classes (ARM?). Is there any workaround so that i can access programm class object from shared library or vice versa?

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• Why does the DOM have both window and self?

  - by hekevintran

  Why does the DOM have an object called self and another called window when they are the same thing? To add to the confusion window has a property called self so: window === window.self === self Why is it like this? Which one should I use?

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• Does Flex/Actionsctipt/Flash implements a mechanism for reusing Sprites?

  - by php html

  I'm creating a game and I create sprites(enemies). I keep creating and destroying sprites. Flash/Flex has a garbage collector which handles the destruction of unused resources. Should I create an object pool to reuse them, or should I leave flash/flex to handle the creation/destruction of objects? Which option is better from the performance point of view?

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• Storing processed objects in database with sqlalchemy

  - by Timmy

  i have things that requires processing and rarely changes except with certain events to take advantage of memcached. can i store a serial version of an object in a data field quickly?

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• Initiatives to namespace PHP core and libraries

  - by James Maroney

  With the introduction of Object-Oriented and Namespacing capabilities in PHP, I am loving the new found cleanliness of PHP code that can be produced. The annoying thing though is that the core of PHP is still cluttered, unorganized mess of functions. Are there any initiatives to organize the PHP core and "common" libraries into namespaces and classes?

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• Changing the default ActiveRecord id from 0 to 1000000

  - by jrk

  Hello there, I'd like to change the minimum for the id of created objects from 1 to 1000. So when I create in rails my first model object it gets the ID 1000 and not 1. Is there a way to set this in the schema/migration files?

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• how do you write a function like print_r() that recursively prints objects?

  - by significance

  i want to write a function that prints multi-dimensional objects which are text (or integers, etc.) into <span></span> tags and arrays into unordered lists. how do you make the function work recursively so that it prints everything regardless of what level it's at in the object? thanks!

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• referencing desired objects in namespaced functions

  - by RyOnLife

  I'm having trouble referencing the desired object when I've namespaced functions. No problems here: obj.test = function() { // this == obj } But I'm getting tripped up when I namespace: obj.namespace.test = function() { // this == namespace } In the latter example, I know this references namespace, but I want to reference obj. How can I do it?

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• [Symfony] Accessing user session from a custom routing class

  - by David

  Is there some way to acces the user object from a custom routing class? I'd like to add a parameter when generating a url, and that parameter is inside the user session, so I need to access it. The only way I found to access is using the sfContext::getInstance()-getUser(), but it's known to be inefficient. Thanks!

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• [C#] NodeMouseClick event doesn't work correctly ???

  - by Wayne

  i use a treeview to display files and folders like Windows Explorer. it has a NodeMouseClick event but sometimes when i click +, this event doesn't fire. private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e) { MessageBox.Show("node mouse click"); } can anyone explain for me why ? and how to know whenever i click + ? thanks in advance!

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• Gridview paging and sorting do not work after changing datasource in codebehind??

  - by mkafkas

  I am having a gridview with an object datasource binded in the markup(aspx page). When page loads it directly works fine with all sorting and paging properties. However, i need to filter display on gridview so i have to change the datasource of the gridview on the code behind. It works fine.. i mean the filtering and displaying is good but paging and sorting doesnt work. Did you have a problem something like this?

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• Slow query execution time

  - by rotor

  select p.id,p.title,p.slug,p.content, (select url from gallery where postid=p.id limit 1) as url, t.name from posts as p inner join termrel as tr on (tr.object = p.id) inner join termtax as tx on (tx.id = tr.termtax_id) inner join terms as t on (t.id = tx.term_id) where tx.taxonomy_id=3 and p.post_status is null order by t.name asc This query took about 0.2407s to execute. How to make it fast?

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• Cannot get document.getElementByID to work

  - by user1804234

  The following function doesn't work for some reason. Can someone see what the problem is? function checkMaxLen(txt, maxLen) { var actualLen = txt.value.length; var remain = maxLen - actualLen; document.getElementById('remainChar').Value = remain; } <input type="text" id="remainChar" runat="server" value="500"/> Whenever I try to run the function, I get this error: Microsoft JScript runtime error: Unable to set value of the property 'Value': object is null or undefined

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• Removing "duplicate objects"

  - by keruilin

  Let's say I have an array of objects from the same class, with two attributes of concern here: name and created_at. How do I find objects with the same name (considered dups) in the array, and then delete the duplicate record in the database. The object with the most-recent created_at date, however, is the one that must be deleted.

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• Question regarding xsd

  - by Hima

  I have an application which reads the data from the database, creates an object out of the data, marshalls it into an xml and enqueue the xml to a queue which is producer. The xml is dequeued from the queue by a consumer. I need to use xsds at two different places. For database access while reading the data from the database and For interaction between producer and consumer Can the same xsd be used in both the cases? Or do I need to use different xsds?

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• appendChild + createElement

  - by user317005

  what's the difference between var div = document.createElement('div');//output -> [object HTMLDivElement] document.getElementById('container').appendChild(div); and var div = '<div></div>'; document.getElementById('container').appendChild(div);//output -> <div></div> shouldn't both be the same? and if not, how do i get the 2nd version to work?

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