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• How to let parent control know that its child got focus?

  - by Axarydax

  Hi there, imagine that I have a Form with 9 controls (TabbedStuffControl) in a 3x3 tile, and these controls contain TabControls containing another control (StuffControl) with ListBoxes and TextBoxes. I'd like to know a proper way to let TabbedStuffControl that its child has received a focus? e.g. user clicks into a textbox of StuffControl or drags something to listbox of StuffControl. Eventually the Form should know which TabbedStuffControl is active Do I need to hook up GotFocus event of TextBoxes and ListBoxes and TabControls, then dispatch another event to finally let Form know who got focus? I think that there should be a simpler way - that somehow TabbedStuffControl knows that its child got focus, so there would be only one place in code that I'll hook up. Thanks.

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• .ics Calendar File - Parsing Date Time - What is the time format?

  - by Josh

  I am coding in php, attempting to get the start\end dates and times for events. I am utilizing the following RegEx for parsing out the information: $pattern='/(?P<StartDate>[0-9]{8})T(?P<StartTime>[0-9]{6}) .+(?P<EndDate>[0-9]{8})T(?P<EndTime>[0-9]{6})/'; The sample event entry is here: BEGIN:VEVENT UID:34b09fd7-8e6e-4d56-86b0-445745b89d93 ORGANIZER;CN=*********:mailto:********* DTSTART;TZID="(GMT-06.00) Central Time (US & Canada)":20100413T130000 DTEND;TZID="(GMT-06.00) Central Time (US & Canada)":20100413T160000 STATUS:CONFIRMED CLASS:PRIVATE X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY TRANSP:OPAQUE X-MICROSOFT-DISALLOW-COUNTER:TRUE DTSTAMP:20100414T140711Z SEQUENCE:0 END:VEVENT 20100413T130000 and 20100413T160000 are the start and end points. The dates are straight forward, however how do I interpret the time part? This event starts at one and ends at four.

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• Automated Post-billing Service/Solution

  - by geoffreak

  I'm trying to find a solution or service that will allow for my company to automatically take a customer's credit card information via the web to keep on file and bill against based on how much they have used the services we provide. We need a service that will also handle the payment processing as well. Note that this is not recurring billing. The bill at the end of each month won't be the same. Presently, we are having to take a customer's credit card information over the phone and manually input it into Quickbooks, but this just doesn't work for scalability. We will still be manually invoicing the customers, but we need automated credit card acceptance and storage without the liabilities involved with storing it on our own server. Solutions that integrate with Wordpress would be a plus.

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• How do I grok NHibernate's QueryOver API?

  - by Brant Bobby

  I've run into the limits of what NHibernate 3.0's LINQ provider is capable of and decided it's time to learn about one of the more powerful (or at least feature-complete) options: the QueryOver API. The problem is, I have zero experience with ICriteria, and all of the tutorials I've been able to find online either: Assume I'm an ICriteria expert and simply show me how to convert ICriteria code to the new fluent interface, or Are trivial "here's how you do an inner join" examples that don't really help me understand more complex concepts like projections, subqueries, requirements, or whatever other magic the API is capable of. What should I read to really learn about QueryOver, and how to make full use of it?

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• How to update control state in asp.net/ajax?

  - by darth_alexious

  I'm trying to update certain controls according to a selection in a dropdown list. For example, in the "selectedIndexChanged" event of a dropDownList, if a user selects the value "sport-car" the text box "payload" is disabled and the textbox "max speed" is enabled. private sub dropDownList1_SelectedIndexChanged(byval sender as object, byval e as eventargs) handles dropDownList1.SelectedIndexChanged If dropDownList1.selectedValue = "sport-car" then textBox_payLoad.enabled = false textBox_maxSpeed.enabled = true end if end sub When I'm doing something like this, the controls aren't enabled/disabled, even the event (wich I've added a breakpoint) seems not to be raised (sometimes several time after it is raised). Also, when the instructions in the condition is executed, nothing changes. What am I doing wrong? Maybe this is a very easy issue, but I'm a begginer in MS Visual Web Developer.

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• Jquery Auto complete append link at the bottom

  - by Ashwin Preetham Lobo

  I am using jQuery auto-complete plugin in my web project. I want to show 3 element and after that i want to append 'see all results' link to the bottom. I tried with following code. $( ".grid-search-box" ).autocomplete({ minLength: 0, source: temp, focus: function( event, ui ) { $( ".grid-search-box" ).val( ui.item.value ); return false; }, select: function( event, ui ) { $( ".grid-search-box" ).val( ui.item.value ); return false; } }).data( "autocomplete" )._renderItem = function( ul, item ) { return $( "<li></li>" ) .data( "item.autocomplete", item ) .append( "<a><span class='" + item.status + "'></span>" + item.value + "</a>" ) .appendTo( ul ); }; Can anybody suggest me, how to solve it.

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• gnome-terminal and logging

  - by UAdapter

  Is there any way to log every that was displayed in gnome-terminal? for example I have a complex command doSomethingThatPrintoutsAlot ; doSomethingThatPrintoutsAlot2 ; doSomethingThatPrintoutsAlot3 I can add > file, but than I would have to do it for each command and I have to use tail in another console to see the output. maybe gnome-terminal support logging everything? there is .bash_history, so .... it might also support this.

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• FlexNativeMenu Problem in Air Application

  - by glatour

  I am trying to add a flexnativemenu to my air application and I have some problems... When I set it in the windowApplication, I get null errors in child controls so I tried to set this.menu = myMainMenu (which is my flexnativemenu) in the creation complete event but the menu doesn't show up... I tried to show an alert message before setting the menu and the menu appeared in the application. Is there a method I can call to force the application to "redraw" itself in the creationComplete event??? Thanks!

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• SoundPlayer causing Memory Leaks?

  - by Nick Udell

  I'm writing a basic writing app in C# and I wanted to have the program make typewriter sounds as you typed. I've hooked the KeyPress event on my RichTextBox to a function that uses a SoundPlayer to play a short wav file every time a key is pressed, however I've noticed after a while my computer slows to a crawl and checking my processes, audiodlg.exe was using 5 GIGABYTES of RAM. The code I'm using is as follows: I initialise the SoundPlayer as a global variable on program start with SoundPlayer sp = new SoundPlayer("typewriter.wav") Then on the KeyPress event I simply call sp.Play(); Does anybody know what's causing the heavy memory usage? The file is less than a second long, so it shouldn't be clogging the thing up too much.

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• SQL Down Under Show 51 - Guest Conor Cunningham - Now online

  - by Greg Low

  Late last night I got to record an interview with Conor Cunningham.Most people that know Conor have come across him as the product team wizard that knows so much about query processing and optimization in SQL Server. Conor is currently spending quite a lot of time working on Windows Azure SQL Database, which we used to know as SQL Azure. I'm still trying to think of a good way to say "WASD". I suppose I'll pronounce it like "wassid". Windows Azure SQL Reporting is easier. I think it just needs to be pronounced like "wazza" with a very Australian accent.In the show, we've spent time on the current state of the platform, on dispelling a number of common misbeliefs about the product, and hopefully on answering most of the common questions that seem to get asked about it. We then ventured into Federations, Data Sync, and Reporting.You'll find the show (and previous shows) here: http://www.sqldownunder.com/Resources/Podcast.aspxEnjoy!PS: For those that like transcripts, we've got the process for producing them much improved now and the transcript should also be up within a few days.

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• How to properly add texture to multi-fixture/shape b2Body

  - by Blazej Wdowikowski

  Hello to everyone this is my first poste here I hope that will be not fail start. At start I must say I make part 1 in Ray's Tutorial "How To Make A Game Like Fruit Ninja With Box2D and Cocos2D". But I wonder what when I want make more complex body with texture? Simple just add n b2FixtureDef to the same body. OK but what about texture? If I will take code from that tutorial it only fill last fixture. Probably it does not takes every b2Vec2 point. I was right, it did not. So quick refactor and from that -(id)initWithTexture:(CCTexture2D*)texture body:(b2Body*)body original:(BOOL)original { // gather all the vertices from our Box2D shape b2Fixture *originalFixture = body->GetFixtureList(); b2PolygonShape *shape = (b2PolygonShape*)originalFixture->GetShape(); int vertexCount = shape->GetVertexCount(); NSMutableArray *points = [NSMutableArray arrayWithCapacity:vertexCount]; for(int i = 0; i < vertexCount; i++) { CGPoint p = ccp(shape->GetVertex(i).x * PTM_RATIO, shape->GetVertex(i).y * PTM_RATIO); [points addObject:[NSValue valueWithCGPoint:p]]; } if ((self = [super initWithPoints:points andTexture:texture])) { _body = body; _body->SetUserData(self); _original = original; // gets the center of the polygon _centroid = self.body->GetLocalCenter(); // assign an anchor point based on the center self.anchorPoint = ccp(_centroid.x * PTM_RATIO / texture.contentSize.width, _centroid.y * PTM_RATIO / texture.contentSize.height); } return self; } I came up with that -(id)initWithTexture:(CCTexture2D*)texture body:(b2Body*)body original:(BOOL)original { int vertexCount = 0; //gather total number of b2Vect2 points b2Fixture *currentFixture = body->GetFixtureList(); while (currentFixture) { //new b2PolygonShape *shape = (b2PolygonShape*)currentFixture->GetShape(); vertexCount += shape->GetVertexCount(); currentFixture = currentFixture->GetNext(); } NSMutableArray *points = [NSMutableArray arrayWithCapacity:vertexCount]; // gather all the vertices from our Box2D shape b2Fixture *originalFixture = body->GetFixtureList(); while (originalFixture) { //new NSLog((NSString*)@"-"); b2PolygonShape *shape = (b2PolygonShape*)originalFixture->GetShape(); int currentVertexCount = shape->GetVertexCount(); for(int i = 0; i < currentVertexCount; i++) { CGPoint p = ccp(shape->GetVertex(i).x * PTM_RATIO, shape->GetVertex(i).y * PTM_RATIO); [points addObject:[NSValue valueWithCGPoint:p]]; } originalFixture = originalFixture->GetNext(); } if ((self = [super initWithPoints:points andTexture:texture])) { _body = body; _body->SetUserData(self); _original = original; // gets the center of the polygon _centroid = self.body->GetLocalCenter(); // assign an anchor point based on the center self.anchorPoint = ccp(_centroid.x * PTM_RATIO / texture.contentSize.width,_centroid.y * PTM_RATIO / texture.contentSize.height); } return self; } I was working for simple two fixtures body like b2BodyDef bodyDef; bodyDef.type = b2_dynamicBody; bodyDef.position = position; bodyDef.angle = rotation; b2Body *body = world->CreateBody(&bodyDef); b2FixtureDef fixtureDef; fixtureDef.density = 1.0; fixtureDef.friction = 0.5; fixtureDef.restitution = 0.2; fixtureDef.filter.categoryBits = 0x0001; fixtureDef.filter.maskBits = 0x0001; b2Vec2 vertices[] = { b2Vec2(0.0/PTM_RATIO,50.0/PTM_RATIO), b2Vec2(0.0/PTM_RATIO,0.0/PTM_RATIO), b2Vec2(50.0/PTM_RATIO,30.1/PTM_RATIO), b2Vec2(60.0/PTM_RATIO,60.0/PTM_RATIO) }; b2PolygonShape shape; shape.Set(vertices, 4); fixtureDef.shape = &shape; body->CreateFixture(&fixtureDef); b2Vec2 vertices2[] = { b2Vec2(20.0/PTM_RATIO,50.0/PTM_RATIO), b2Vec2(20.0/PTM_RATIO,0.0/PTM_RATIO), b2Vec2(70.0/PTM_RATIO,30.1/PTM_RATIO), b2Vec2(80.0/PTM_RATIO,60.0/PTM_RATIO) }; shape.Set(vertices2, 4); fixtureDef.shape = &shape; body->CreateFixture(&fixtureDef); But if I try put secondary shape upper than first it starting wierd, texture goes crazy. For example not mention about more complex shapes. What's more if shapes have one common point texture will not render for them at all [For that I use Physics Edytor like in tutorial part1] BTW. I use PolygonSprite and in method createWithWorld... another shapes. Uff.. Question So my question is, why texture coords are in such a mess up? It's my modify method or just wrong approach? Maybe I should remove duplicated from points array?

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• Parameter to swf loader with loader class

  - by alejandrobog

  Hi im loading a child swf into my parent swf and I want to pass some parameters to the child swf. Any idea on how to do this. Here is my code: var req:URLRequest = new URLRequest( "test.swf" ); var loader:Loader = new Loader(); loader.contentLoaderInfo.addEventListener( Event.COMPLETE, loadComplete ); loader.load(req); function loadComplete(e:Event){ var childSwf:DisplayObject = e.target.content as DisplayObject; //Im guessing here I need to set the parameter VideoContainer.addChild(childSwf); }

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• The Chemistry of Fireworks [Video]

  - by Jason Fitzpatrick

  Fireworks are the dazzling and loud end result of complex chemical process. Watch this video to see the chemistry behind a fireworks display explained by none other than the father of modern pyrotechnics, John Conkling. Courtesy of Bytesize Science: From the sizzle of the fuse to the boom and burst of colors, this video brings you all of the exciting sights and sounds of Fourth of July fireworks, plus a little chemical knowhow. The video features John A. Conkling, Ph.D., who literally wrote the book on fireworks — he is the author of The Chemistry of Pyrotechnics, Basic Principles and Theory. Conkling shows how the familiar rockets and other neat products that light up the night sky all represent chemistry in action. [via Geeks Are Sexy] How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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• Rails with JQuery DIV manipulation

  - by MrThomas

  Say I have a loop of objects (style.cover.pic) in a DIV .style_image <% @styles.each do |style| % <div class="style_image"> <%=link_to (image_tag style.cover.pic.url(:small)), style %></div> With the use of JQuery On a click event I want to load (this.href) in to the div .style_image which was click not all of the .style_image DIV's. this is what I have done so fare: $(function() { $(".style_image a").live('click', function(event) { $(".style_image a").load(this.href + " #show_style"); $.get(this.href, null, null, "script"); return false; }); }); Can this be done? and yes how??? Regards Dan

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• How do you add a row to a databound datagridview using the datagridview in the gui?

  - by IsaacB

  Hi guys, I've bound a datagridview to a collection of objects. It's giving me a null reference exception when I try to add a new row to a collection (empty or otherwise) using the gui. More specifically, when there is a write event it does this. How can I override the behavior of the write event and manually add all of the columns contents to the object collection? I could disable the add new row feature and make an add button, but the built in datagridview row add looks so much more slick.

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• Disable ATI Radeon graphics card and use intel graphics (switcheroo unavailable)

  - by user92356

  So I have a HP Envy with ATI Radeon 5450 + intel switchable graphics. I think (though I'm not sure) that the Radeon is running right now on Ubuntu 12.04 (because my laptop is making too much noise when I'm doing something non gpu intensive like word processing, or web browsing). So what I want to do is disable the ATI Radeon and use the Intel instead. I looked around and it seems all the solutions use switcheroo, but I dont have it on my computer! I think this happened because I tried installing the proprietary driver (fglrx). Any and all help is 200% appreciated, thank you

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• How to recover data from NTFS partition that was made into a Swap partition?

  - by Raghav Mehta

  I have extremely important stuff on my windows partition which during the ubuntu 10.10 installation,when it said that I should create something called swap space, I selected it to be a swap space (without even knowing what it actually meant) The Grub2 doesn't show up so I don't get a choice to boot Ubuntu or Windows. I don't get my windows partition as a removable device in Ubuntu either. When I go to disk utility and select the sda2 (i.e.. my windows partition) and click edit partition and select HPFS/NTFS for the type and tick bootable and click OK the small processing sign keep on rotating on the bottom right of the sda2 in the chart and after about 10 to 15 minutes it gives an unknown error and thus, I am still unable to use my windows. I am even worse than a beginner who doesn't know a thing about Ubuntu so please be patient and help me out.

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• Free C# Online Classes

  Now you can learn C language online from expert teachers of WiZiQ. These are Free Online Classes on C# which are scheduled on different timings. You can join the class as per your convenience.  Below are some of the topics which are covered in the classes:Programming with Collections in C#.NETIntroduction to Complex NumbersC++ Fundamental 2C++ ProgrammingThe recordings of these classes are also available which you can view anytime. ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• This Week in Geek History: Birth of NACA, Chemical Composition of DNA Discovered, Telephone Introduced

  - by Jason Fitzpatrick

  Every week we bring you new facts and figures from the annals of Geekdom. This week we’re taking a look at the birth of NASA’s forefather, the composition of DNA, and the first telephone. Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions Access and Manage Your Ubuntu One Account in Chrome and Iron Mouse Over YouTube Previews YouTube Videos in Chrome Watch a Machine Get Upgraded from MS-DOS to Windows 7 [Video] Bring the Whole Ubuntu Gang Home to Your Desktop with this Mascots Wallpaper Hack Apart a Highlighter to Create UV-Reactive Flowers [Science] Add a “Textmate Style” Lightweight Text Editor with Dropbox Syncing to Chrome and Iron

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• DataGridView bound to a Dictionary and updated with a thread

  - by Manjoor

  I have a Dictionary binded to DataGridView by using following sample code. http://stackoverflow.com/questions/854953/datagridview-bound-to-a-dictionary Please see the above question first The diffrence is that i am updating dictionary from a thread. (Event handler of another class). My Event handler is as below static void f_PriceChanged(Objet f, eventData e) { if (prices.ContainsKey(e.ItemText)) prices[e.ItemText] = e.price; else prices.Add(e.ItemText, e.price); } Not to mention the prices is declared as class level. I have modified the button code from original post as Button btn = new Button(); btn.Dock = DockStyle.Bottom; btn.Click += delegate { bl.Reset(); }; form.Controls.Add(btn); Internally the Dictionary is updated as expected but grid does not update. Clicking on button generate exception Collection was modified; enumeration operation may not execute What to do?

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• Distinct Count of Customers in a SCD Type 2 in #DAX

  - by Marco Russo (SQLBI)

  If you have a Slowly Changing Dimension (SCD) Type 2 for your customer and you want to calculate the number of distinct customers that bought a product, you cannot use the simple formula: Customers := DISTINCTCOUNT( FactTable[Customer Id] ) ) because it would return the number of distinct versions of customers. What you really want to do is to calculate the number of distinct application keys of the customers, that could be a lower number than the number you’ve got with the previous formula. Assuming that a Customer Code column in the Customers dimension contains the application key, you should use the following DAX formula: Customers := COUNTROWS( SUMMARIZE( FactTable, Customers[Customer Code] ) ) Be careful: only the version above is really fast, because it is solved by xVelocity (formerly known as VertiPaq) engine. Other formulas involving nested calculations might be more complex and move computation to the formula engine, resulting in slower query. This is absolutely an interesting pattern and I have to say it’s a killer feature. Try to do the same in Multidimensional…

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• Actor based concurrency and cancellation

  - by Akash

  I'm reading about actor based concurrency and I appreciate the simplicity of actors sequentially processing messages on a single thread. However there is one scenario that doesn't seen possible. Suppose that actor A sends a message to actor B, who then performs some long running task and returns a completion message to actor A. How can actor A force actor B to cancel the long running task after it has started? If actor B is running the task in its message queue thread, it won't pick up the cancellation message until it had completed the task; if actor B runs the task in a background thread then it seems to be violating the principle of actors. Is there a common way that this scenario is handled with actors? Or does each actor language/framework take a different approach? Or is this not a suitable problem to tackle via actors?

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• Can i create a SDL_Surface as i do with Allegro?

  - by Petris Rodrigo Fernandes

  First of all, I'm sorry about my english (Isn't my native language) Using allegro I can create a Bitmap to draw just doing: BITMAP* bmp = NULL; bmp = create_bitmap(width,height); // I don't remember exactly the parameters I'm using SDL now, and i want create a SDL_Surface to draw the game level (that is static) creating a SDL_Surface, drawing the tiles on it, then i just blit this surface to the screen instead of keep drawing the tiles directly on screen (i believe this will require more processing); There a way to create a blank SDL_Surface as i did with Allegro just do draw before blit it?

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• Qt - A login dialog

  - by Narek

  I want to create a login dialog by inheriting QDialog. I put in subclass named LoginDialog 2 QLineEdits: for login for password. I want to be able to warn the user with a message if the caps lock is ON while he will start to fill passwordLineEdit. Suppose I have a function that tells the current state of CapsLock button. So I want to do eventFiltering in LoginDialog class in order to understand that user starts to fill the password field (i.e. user just stepped into the password field) So for that purpose I wrote the following in the LoginDialog class constructor: m_passwordLineEdit->installEventFilter(this); So the only thing is to do is to implement a function which can understand that user is going to fill the password. Seems is should be done with the following function(??): bool LoginDialog::eventFilter(QObject *target, QEvent *event) { if (target == m_passwordLineEdit) { } return QDialog::eventFilter(target, event); } How to implement this function???

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• WaitForSingleObject( )

  - by Rakesh Agarwal

  I have got myself stuck into a really amazing issue here.The code is like as below. class A { public: A(){ m_event = CreateEvent(NULL, false, false, NULL); // create an event with initial value as non-signalled m_thread = _beginthread(StaticThreadEntry, 0, this); // create a thread } static void StaticThreadEntry(A * obj) { obj->ThreadEntry(); } void ThreadEntry(); }; void A::ThreadEntry() { WaitforSingleObject(m_event,INFINITE); } int main() { A a; SetEvent(m_event); // sets the event to signalled state which causes the running thread to terminate WaitForSingleObject(m_thread, INFINITE); // waits for the thread to terminate return 0; } Problem : When the above code is run,sometimes( 1 out of 5 ) it hangs and the control gets stuck in the call to WaitforSingleObject()( inside the main function ).The code always calls SetEvent() function to ensure that the thread would terminate before calling Wait() function. I do not see any reason why it should ever hang?

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