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• Android - Service and Activity interaction

  - by Chris

  I want to create an app that contains a Service S and an Activity A. The Service S is responsible for preprocessing, such as preparing the data shown on the UI of the Activity A, before the Activity A gets invoked. I want to be able to invoke the Service S from outside the package, say from another Android app's Activity class B, do the preprocessing, and then when the data is ready, invoke Activity A. My questions are: What is the best way to share data between the Service S and Activity A? How can the external activity B communicate with the Service S to determine if it has completed with all its preprocessing, and the Activity A is ready to be invoked? Thanks Chris

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• What's the best version control system for handling projects with graphics?

  - by acrosman

  I'm part of a small team (usually just two people), I handle the code, he handles the graphic design. In the past I've used CVS to handle version control of the code files, and while we've included the graphics in the repository, he hasn't derived nearly as much value from it as I have. Are there other packages that provide the better features for supporting graphics? The system would need to have an easy to use GUI interface, as I don't think it's fair to expect a graphic designer to learn command-line tools. Additional aspect: The client software needs to run smoothly on OS X (for the designer), and Windows (for the programmer).

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• Sequence Diagram Reverse Engineering Tool?

  - by Wayne

  It's essential for me to find a tool that will reverse engineer sequence diagrams by integrating with the debugger. I suppose using the profiler could work also but less desirable. It's a key requirement that the tool in question will record all threads of execution since the app, TickZoom, is heavily parallelized. We just evaluated a most awesome tool from Sparx called Enterprise Architect which integrates with the debugger. It allows you to set a break point, start recording method traces from that break point. It's a lovely design and GUI. Hope it works for you but it only records a single thread of execution so that makes it unusable for us. I will put in a feature request to Sparx. But hope to find a similar tool that already does this since that's the only feature we need--not all the other amazing features that Sparx Enterprise Architect appears to do rather well.

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• question about tablecell and its contols collection

  - by Varyanica

  i have a table (System.Web.UI.WebControls). each row does have three cells. in cells' controls collection i placed some controls TableCell cell = new TableCell(); cell.Font.Bold = false; cell.BackColor = Color.FromName("lightblue"); cell.Controls.Add(new LiteralControl("????")); row.Cells.Add(cell); TableCell c3 = new TableCell(); c3.Controls.Add(new CheckBox()); r.Cells.Add(c3); i cant find the way to get values which this controls are holding i see that CheckBox stores a value, but i don't know how to get it. Can you tell me how?

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• Form gets disposed somehow

  - by mnn

  I have a client-server application, in which I use classic Sockets and threads for receiving/sending data and listening for clients. The application works fine, but after some random time I get the ObjectDisposedException: System.ObjectDisposedException: Cannot access a disposed object. Object name: 'MainForm'. at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous) at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args) at System.Windows.Forms.Control.Invoke(Delegate method) That code is called from client Socket thread and I use Invoke() method to run the code on UI thread. I'm sure that I don't manually dispose the form nor using Close() (form is closed by user clicking Close button), so I don't know what could cause its disposing.

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• file path of a MenuItem target with cmdOpen action

  - by maranas

  I am trying to acquire the file path of an item within the NSMenuItem object. Using [objectname action] i am able to properly acquire the action (cmdOpen). But [objectname target] returns a null value. According to the documentation in the apple developer website, if the value is null, the action is sent to the first-responder. I want to be able to dynamically access the file path of the target file. Is there a way to do this without changing the program design?

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• UITextFields losing values after UINavigationController activity

  - by Dan Ray

  This is going to be hard to demonstrate in code, but maybe you can picture it with me. I have a view that contains two UITextFields, "title" and "descr". That same view contains two UIButtons that push another controller onto the navController to get more detail from the user about the object we're assembling and ultimately uploading to my server. It appears that pushing another view on, doing something, and popping it back off results in the two UITextFields keeping their content VISUALLY, but the .text property of those fields becomes NULL. I've confirmed that if I do my two push-pop fields before filling in those UITextFields, I get my data when I upload, and if I do them in the opposite order, I don't. It LOOKS like there's data there, but I get nothing when I NSLog their .text properties. Is this normal? Do I need to just design around this? Or is this as weird as it seems, and I should be looking deeper at causes of this?

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• Common programming mistakes for Scala developers to avoid

  - by jelovirt

  In the spirit of Common programming mistakes for Java developers to avoid? Common programming mistakes for JavaScript developers to avoid? Common programming mistakes for .NET developers to avoid? Common programming mistakes for Haskell developers to avoid? Common programming mistakes for Python developers to avoid? Common Programming Mistakes for Ruby Developers to Avoid Common programming mistakes for PHP developers to avoid? what are some common mistakes made by Scala developers, and how can we avoid them? Also, as the biggest group of new Scala developers come from Java, what specific pitfalls they have to be aware of? For example, one often cited problem Java programmers moving to Scala make is use a procedural approach when a functional one would be more suitable in Scala. What other mistakes e.g. in API design newcomers should try to avoid.

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• Web-To-Print - What technology should I explore? Web-Content -> drag & drop to Templates -> PDF

  - by hamlin11

  I'm discussing some software design issues with a potential client and the idea of Web-to-Print technology has come up. We need users to be able to drag images from an image library to various regions defined by a template. Example: Images may go in box A, B, or C and text may go in boxes D or E. These templates would be setup Boxes A through E would be defined inside a template by administrators using some sort of editor. These templates would serve as a mapping from web-content to a PDF. Once users drag images and insert text in the appropriate regions of the template, the result will be converted into a PDF. Is this feasible these days with jquery & asp.net? That would be nice. If not, what would be the ideal solution?

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• A very weird problem with texbox control in .net

  - by Kazoom

  Well i know textbox is a very simple user control, perhaps the first input control ever made. I have been facing a very frustrating problem with this simple control. I programatically add a textbox in my user control. From ui i am able to edit it like a normal textbox. however, i am not able to read the user inputed value in the program. my program all the time sees the old value with which my text box was initialized. i textchange event getting triggered but the value never gets updated. This seemingly looks to be some innocuous bug in the code, but the program is very simple and it does not seem to be having any bug. Any guidelines on this issue?

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• nHibernate session - Using repository pattern in Web, windows, wcf etc...

  - by alex

  I recently posted a question which was answered by Bryan Watts, regarding generic repository for nHibernate. I'm trying to design my data access to allow various facets - from ASP.net, WCF and Windows Forms / Windows services. I'm a bit confused re: session management etc.. How would I handle this? I've been checking out code such as: http://membranecms.googlecode.com/svn/ and questions such as: http://stackoverflow.com/questions/1207833/nhibernate-linq-session-management But what do i do if i don't just do things in a web based environment..? Do i need to create different repositories for each client? Or do i pass in the ISession into the (for example) UserRepository constructor..? ... as a side note I'm using nHibernate.Linq Also using fluent nHibernate to config my mapping

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• Graphical Programming Language

  - by prosseek

  In control engineering or instrumentation, I see Simulink or LabVIEW(G) is pretty popular. In ESL design, I see that Agilent SystemVue is gaining some popularity. If you see the well established compiler theroy, almost 100% is about the textual language. But how about the graphical language? Is there any noticable research or discussion about the graphical programming language? In terms of Theory about Graphical Language - syntactic/semantic analysis and whatever relevant expressiveness (Actually, I asked a question about it at SO - http://stackoverflow.com/questions/2427496/what-do-you-mean-by-the-expressiveness-in-programming-lanuguage) Possibility of the Graphical language ... Or what do you think about the Graphical Programming Language?

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• Dynamic adding of usercontrols not showing control on page

  - by Phil

  I am trying to insert a user control dynamically into my default.aspx page via the following method in the page_init: Dim control As UserControl = LoadControl("~\Modules\Content.ascx") Controls.Add(control) When I run the page there is no sign of the usercontrol. Am I using the correct code to insert the usercontrol? Is there an alternative method of insertion available? Does the fact that the usercontrol has a page_load make a difference? Do I need to register the control in my aspx page at design time? Thanks in advance for any assistance you can offer.

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• scrabble algorithm....

  - by teddy

  I'm making algorithm like crossword, but I dont know how to design the algorithm. For example: there are words like 'car', 'apple' in the dictionary. the word 'app' is given on the board. there are letters like 'l' 'e' 'c' 'r'....for making words. So the algorithm's task is to make correct words which are stored in dictionary. app - lapp - leapp - lecapp - .... - lappe - eappc - ... - appl - apple (correct answer) What is the best solution for this algorithm?

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• Encrypting Files with AES, Encrypting Key with RSA - Am I on the right track?

  - by Shawn Steward

  Overview: I'm trying to design an application that will encrypt files to safely send through the mail. I'm planning on using AES/RijndaelManaged encryption from .Net to encrypt the files initially, using a randomly generated key using RNGCryptoServiceProvider. I'm then encrypting this random AES key with a RSA Public key. The receiver of the data is the only one with the RSA Private key to decrypt it. My question: Is this the proper way to do something like this? If so, is it safe to send this RSA-Encrypted key with the data since it requires the private key to decrypt? Also - when having the end user generate their Public/Private key pair, what is the best way to save the Private key? I do not want it to be only accessible from one machine, so I am trying to avoid using the user's key store. But MSDN says it is not safe to save the key to a file, so how else can you accomplish this?

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• ASP.NET - Display Message While Page Is Loading

  - by Chris

  I have a page that performs a long-running task (10 to 15 seconds) in the page_load method. I have client-side javascript code that will display a decent "page loading" animated gif to the user. I am able to invoke the JavaScript method from the code-behind, to display the "page loading" animated gif, however, the long-running task is hanging up the UI such that the animated gif doesn't actually display until after the long-running task is complete, which is the exact opposite of what I want. To test this out, in my page_load method I make a call to the JavaScript method to display the animated gif. Then, I use Thread.Sleep(10000). What happens is that the animated gif doesn't display until after Thread.Sleep is complete. Obviously I am doing something incorrect. Any advice would be appreciated. Thanks. Chris

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• WPF Animation of border width

  - by Dave Perry

  I've got a dockpanel on my ui as follows; <DockPanel> <Border DockPanel.Dock="Top">Header</Border> <Border DockPanel.Dock="Bottom">My footer</Border> <Border DockPanel.Dock="Left">Menu</Border> <Border>Content</Border> </DockPanel> What I want to do is to have a storyboard animation to show / hide the Menu on the left-hand side. I've got my border to increase the width when it has loaded but I want a way to close / reopen it. I need a button somewhere but I want this to trigger the animation in the border control rather than itself. Ideally I was thinking of something like the Toolbox / Server Explorer in visual studio. Does anyone have any pointers / examples for getting started? Thanks

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• Blackberry development on scripting language ?

  - by zvr

  From what I've seen, the preferred way to develop Blackberry applications is Java. Is this the only way? I'm dreaming of a rapid application environment where you can create GUIs (using the Blackberry UI components). Something like a port of Tcl/Tk on Blackberry... or Python/Tkinter... or something new, but similar. Does something like that exist ? (I doubt it) Can something like that exist ? (i.e., given the money, is it feasible/reasonable/...)

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• Sending message from working non-gui thread to the main window

  - by bartek

  I'm using WinApi. Is SendMessage/PostMessage a good, thread safe method of communicating with the main window? Suppose, the working thread is creating a bitmap, that must be displayed on the screen. The working thread allocates a bitmap, sends a message with a pointer to this bitmap and waits until GUI thread processes it (for example using SendMessage). The working thread shares no data with other threads. Am I running into troubles with such design? Are there any other possibilities that do not introduce thread synchronizing, locking etc. ?

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• Select points on a map

  - by Dave Hanna

  I am just beginning design work on a problem that I'm sure has been solved before. In a web based application, I need to: a) present a map b) place a set of points (map-pins) on the map c) allow the user at his browser to draw a simple closed curve on the map with his mouse d) send the path of that curve back to the server e) on the server, select from the set of points those that are within the closed curve. What are the best API's to use for this problem? (I know I can and will do more research with Google, but I'm figuring there is probably someone who has done this that can give me some pointers to narrow my search space.) Thanks.

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• Are IoC containers about configuration files?

  - by Jader Dias

  Recently I developed a performance tester console application, with no UI, with the help of a IoC containter (Castle-Windsor-Microkernel). This library enabled me to let the user choose which test(s) to run, simply by changing the configuration file. Have I realized what IoC containers are about? I'm not sure. Even Joel said here on SO that IoC are difficult to understand. From my example, what do you conclude? Am I using IoC container for exactly what they were designed for? Or I am just using one of its secondary features?

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• MS Word: Mailmerge hyperlinks with query get url string with a mergefield.

  - by oterrada

  Hi, I'm trying to send an email merging one document (docx) with a contacts database (via OleDB). Using MSWord2007, it seems easy (it works for easy things: name, address, ...) but I can't find how fill an query-get url string with a merge field inside an hyperlink. An hyperlink like: Click here where here is an hyperlink to http://domain.com/[email protected] where [email protected] is the address of the contact, a merge field. I've tried the special/merge fields: {HYPERLINK "http://domain.com/test.php?contact={MERGEFIELD contactEmail}" \o "Here"} but it doesn't work, sometimes it merge only the first record and then send all the mails with the same address, I got this alternating the view with ALT+F9. This support doc doesn't work for me because I don't have the complete URL in my database for each contact, and I can't change the design of the table or add a view (it's from the CRM), I don't like to do it exporting the table and adding the field. Any idea? Thanks in advance,

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• How to make controls "tabable" when loaded from plugin in Cocoa app?

  - by Randall

  I have an application thad loads in plugins that have their own UI. There is an IBOutlet called ContainerView in my AppDelegate. When the plugin loads, it puts its own view (that is stored in a xib in the plugin bundle) into the Container view like so [ContainerView addSubview:viewFromPlugin]; When the view loads, everything is fine but when I press tab the only controls that get any focus are ones outside of the ContainerView and none of them inside it get focus. I've tried setting the container view as the initialFirstResponder and I've tried hooking up the nextKeyView from the last button in the tab order to the ContainerView. Thanks.

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• Python Solitaire

  - by Kevin

  This is more of a thought i had awhile rather than an actual problem to solve, maybe more a discussion, but i was wondering if it would be possible to design the game of solitaire and be abkle to play it in the python GUI or some other form of iterface? I know you can get a deck of cards fairly easily and i know yuo can play simple games like snap and so on but i thought solitaire would be more challenging and fun because there is alot more logic behind it than just laying out the cards randomly. Any ideas? (I would be intrested to hear about or see any solutions if anyone had any links etc..)

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• Silverlight solution builds in VS2008 but fails with MSBuild

  - by Chris Nicola

  I have a Silverlight solution that I want to create a build script for. I have a simple script that looks like this call "c:\Program Files\Microsoft Visual Studio 9.0\VC\bin\vcvars32.bat" msbuild %CD%\V1\Incentive.sln /target:Rebuild /property:Configuration=DEBUG;WarningLevel=2 msbuild %CD%\UI\IncentiveUI.sln /target:Rebuild /property:Configuration=DEBUG;WarningLevel=2 pause However when I run this I get a failure, with some complaints about classes that are in a project with linked files: http://pastebin.com/JRE3tWfh This solution compiles fine in VS2008 so I can't figure out what the problem is. I have to guess something is wrong with the way I am using msbuild here.

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