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  • GraphicsDevice is null in my XNA Windows Game project

    - by indyK1ng
    Hello All, I have just started trying to make a simple game with XNA 3.1 to help myself learn C# and XNA. I have run into a bit of an interesting problem, however. In all of the tutorials, one is supposed to pass GraphicsDevice when instantiating a new spriteBatch object like this: spriteBatch = new SpriteBatch(GraphicsDevice); One might even do this: GraphicsDevice objGraphics = new graphics.GraphicsDevice; spriteBatch = new SpriteBatch(objGraphics); where graphics is the GraphicsDeviceManager. However, no matter which version I try, I always get an ArgumentNullException when I try to pass the GraphicsDevice object to spriteBatch's constructor. Almost every tutorial I have found gives the first one and only one mentioned the second option. Has anyone else run into a similar error or know what could be causing this? I am working in Windows 7 x64 with Visual Studio 2008.

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  • Managing Static Library project as a module like Framework on iOS project in Xcode4.

    - by Eonil
    (Solution Note, I'll answer immediately) Many people including me trying to make a kind of Static Library framework for iOS to archive some kind of modularity. Framework is best way to do this, but it doesn't provided by Apple, and workarounds don't work well. https://github.com/kstenerud/iOS-Universal-Framework/tree/master/Fake%20Framework/Templates Fake framework cannot be referenced from linking tab in Build Phases. Real framework needs modification of system setting. And still not work smoothly on every parts. Problem is static library need header files, and it's impossible to reference header files on project at another location on different project without some script. And script breaks IDE's file management abstraction. How can I use static library project like a convenient module manner? (just dragging project into another project to complete embedding)

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  • exception 'Zend_Controller_Action_Exception' with message 'Action "index" does not exist and was not

    - by princyp
    Anyone know what this error means? after googling I found a bunch of sites that appear to have the same error? thanks exception 'Zend_Controller_Action_Exception' with message 'Action "index" does not exist and was not trapped in __call()' in /usr/local/zend/apache2/htdocs/pintsy/lib/Zend/Controller/Action.php:485 Stack trace: #0 /usr/local/zend/apache2/htdocs/pintsy/lib/Zend/Controller/Action.php(515): Zend_Controller_Action->__call('indexAction', Array) #1 /usr/local/zend/apache2/htdocs/pintsy/lib/Zend/Controller/Dispatcher/Standard.php(289): Zend_Controller_Action->dispatch('indexAction') #2 /usr/local/zend/apache2/htdocs/pintsy/lib/Zend/Controller/Front.php(946): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #3 /usr/local/zend/apache2/htdocs/pintsy/html/index.php(114): Zend_Controller_Front->dispatch() #4 {main}

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  • Binding output of Custom Activity designer to activity argument

    - by gbanfill
    I am trying to add a custom activity designer for an activity that I have. The activity looks a little like: public class WaitForUserInputActvitiy : NativeActivity { public InArgument<UserInteractionProperty[]> UserInteraction { get; set; } } I am trying to put a designer on the activity to make it a bit nicer to set these values (so you don't end up typing VB in directly. My designer is based on mindscape property grid. I have an ObservableDictionary source that I want to get the values from and put them in to the InArgument. Currently I am using private void TestGrid_LostFocus(object sender, RoutedEventArgs e) { using (ModelEditingScope editingScope = this.ModelItem.BeginEdit()) { Argument myArg = Argument.Create(typeof(WaitForUserInputActvitiy), ArgumentDirection.In); this.ModelItem.Properties["UserInteraction"].SetValue(source.Values.ToArray()); editingScope.Complete(); } } However this results in an ArgumentException "Object of type UserInteractionProperty[] cannot be converted to InArgument`1[UserInteractionProperty[]]. So how do I convert my array of UserInteractionProperties into an InArgument?

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  • Designing a state machine in C++

    - by skyeagle
    I have a little problem that involves modelling a state machine. I have managed to do a little bit of knowledge engineering and 'reverse engineer' a set of primitive deterministic rules that determine state as well as state transitions. I would like to know what the best practises are regarding: How to rigorously test my states and state transitions to make sure that the system cannot end up in an undeetermined state. How to enforce state transition requirements (for example, it should be impossible to go directly from stateFoo to StateFooBar, i.e. to embue each state with 'knowlege' about the states it can transition to. Ideally, I would like to use clean, pattern based design, with templates wherever possible. I do need somewhere to start though and I would be grateful for any pointers (no pun intended), that are sent my way.

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  • Design - Where should objects be registered when using Windsor

    - by Fredrik Jansson
    I will have the following components in my application DataAccess DataAccess.Test Business Business.Test Application I was hoping to use Castle Windsor as IoC to glue the layers together but I am bit uncertain about the design of the gluing. My question is who should be responsible for registering the objects into Windsor? I have a couple of ideas; Each layer can register its own objects. To test the BL, the test bench could register mock classes for the DAL. Each layer can register the object of its dependencies, e.g. the business layer registers the components of the data access layer. To test the BL, the test bench would have to unload the "real" DAL object and register the mock objects. The application (or test app) registers all objects of the dependencies. Can someone help me with some ideas and pros/cons with the different paths? Links to example projects utilizing Castle Windsor in this way would be very helpful.

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  • Will this safely delete my record?

    - by Sergio Tapia
    I hate these three tables that. Two tables have a many to many relationship and as such it generates a third table. I'm using Linq-to-SQL and in the .dbml file I've dragged all the folder there to the graphic surface. Here is the method I'm using to delete an Area safely. Remember that documents are associated to an Area, so I can't just delete it and leave documents hanging. ScansDataContext db = new ScansDataContext(); /// <summary> /// Deletes an Area object from the database along with all associations in the database. /// </summary> /// <param name="area">Area object to save</param> public void Delete(Area area) { db.DocumentAreaRelations.DeleteAllOnSubmit(area.DocumentAreaRelations); db.Areas.DeleteOnSubmit(area); db.SubmitChanges(System.Data.Linq.ConflictMode.FailOnFirstConflict); }

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  • Problem generating APN SSL certificate after submitting to apple store

    - by MikeQ
    I'm having trouble getting Apple to generate an APN SSL certificate for my app ID. I've submitted the application to the Apple store, and it is pending review. I tested the application using an Ad Hoc app ID "${bundle_id}.adHoc" and everything went fine. I submitted to the Apple store with app ID "${bundle_id}.release". Now I want to generate my production APN SSL certificate for use with my release application ID - but the developer portal doesn't want to. When I upload my certificate request, it sits for about a minute before telling me: "We are not able to generate your Profile at this time. Please try again later or try using the Provisioning Portal" Is it impossible to generate your certificate while the application is under review or something? Should I have generated it prior to submission?

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  • ASP.NET MVC reminds me of old Classic ASP spaghetti code...

    - by EdenMachine
    I just went through some MVC tutorials after checking this site out for a while. Is it just me, or does MVC View pages brinig back HORRIBLE flashbacks of Classic ASP spaghetti code with all the jumping in and out of HTML and ASP.NET with yellow delimiters everywhere making it impossible to read? What ever happened to the importance of code/design separation?? I was really sold on the new technology until the tutorials hit the View page development section. Or am I missing something? (And don't say you can use the template to help because it's jsut moving the spaghetti to another location - sweeps it under the rug - it doesn't fix the problem)

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  • CreateChildControls AFTER Postback

    - by Francois
    I'm creating my own CompositeControl: a collection of MyLineWebControl and a "add" button. When the user press the "add" button, a new MyLineWebControl is added. In CreateChildControls(), I run through my model (some object MyGridOfLines which has a collection of MyLine) and add one MyLineWebControl for each MyLine. In addButton.Click, I add a new MyLine to my object MyGridOfLines. But, since the Click event method is called after CreateChildControls(), the new MyLineWebControl will be only displayed on the next postback. What can I do to "redraw" immediately my control, without loosing values that I've entered in each input?

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  • Check if BigDecimal is integer value

    - by Adamski
    Can anyone recommend an efficient way of determining whether a BigDecimal is an integer value in the mathematical sense? At present I have the following code: private boolean isIntegerValue(BigDecimal bd) { boolean ret; try { bd.toBigIntegerExact(); ret = true; } catch (ArithmeticException ex) { ret = false; } return ret; } ... but would like to avoid the object creation overhead if necessary. Previously I was using bd.longValueExact() which would avoid creating an object if the BigDecimal was using its compact representation internally, but obviously would fail if the value was too big to fit into a long. Any help appreciated.

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  • Convert a generic list to an array

    - by Freewind
    I have searched for this, but unfortunately, I don't get the correct answer. class Helper { public static <T> T[] toArray(List<T> list) { T[] array = (T[]) new Object[list.size()]; for (int i = 0; i < list.size(); i++) { array[i] = list.get(i); } return array; } } Test it: public static void main(String[] args) { List<String> list = new ArrayList<String>(); list.add("abc"); String[] array = toArray(list); System.out.println(array); } But there is an error thrown: Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Ljava.lang.String; at test.Helper.main(Helper.java:30) How to solve this?

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  • xslt test if a variable value is contained in a node set

    - by Aamir
    I have the following two files: <?xml version="1.0" encoding="utf-8" ?> <!-- D E F A U L T H O S P I T A L P O L I C Y --> <xas DefaultPolicy="open" DefaultSubjectsFile="subjects.xss"> <rule id="R1" access="deny" object="record" subject="roles/*[name()!='Staff']"/> <rule id="R2" access="deny" object="diagnosis" subject="roles//Nurse"/> <rule id="R3" access="grant" object="record[@id=$user]" subject="roles/member[@id=$user]"/> </xas> and the other xml file called subjects.xss is: <?xml version="1.0" encoding="utf-8" ?> <subjects> <users> <member id="dupont" password="4A-4E-E9-17-5D-CE-2C-DD-43-43-1D-F1-3F-5D-94-71"> <name>Pierre Dupont</name> </member> <member id="durand" password="3A-B6-1B-E8-C0-1F-CD-34-DF-C4-5E-BA-02-3C-04-61"> <name>Jacqueline Durand</name> </member> </users> <roles> <Staff> <Doctor> <member idref="dupont"/> </Doctor> <Nurse> <member idref="durand"/> </Nurse> </Staff> </roles> </subjects> I am writing an xsl sheet which will read the subject value for each rule in policy.xas and if the currently logged in user (accessible as variable "user" in the stylesheet) is contained in that subject value (say roles//Nurse), then do something. I am not being able to test whether the currently logged in user ($user which is equal to say "durand") is contained in roles//Nurse in the subjects file (which is a different xml file). Hope that clarifies my question. Any ideas? Thanks in advance.

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  • load a pickle file from a zipfile

    - by eric.frederich
    For some reason I cannot get cPickle.load to work on the file-type object returned by ZipFile.open(). If I call read() on the file-type object returned by ZipFile.open() I can use cPickle.loads though. Example .... import zipfile import cPickle # the data we want to store some_data = {1: 'one', 2: 'two', 3: 'three'} # # create a zipped pickle file # zf = zipfile.ZipFile('zipped_pickle.zip', 'w', zipfile.ZIP_DEFLATED) zf.writestr('data.pkl', cPickle.dumps(some_data)) zf.close() # # cPickle.loads works # zf = zipfile.ZipFile('zipped_pickle.zip', 'r') sd1 = cPickle.loads(zf.open('data.pkl').read()) zf.close() # # cPickle.load doesn't work # zf = zipfile.ZipFile('zipped_pickle.zip', 'r') sd2 = cPickle.load(zf.open('data.pkl')) zf.close() Note: I don't want to zip just the pickle file but many files of other types. This is just an example.

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  • Get multiple records with one query

    - by Lewy
    User table: name lastname Bob Presley Jamie Cox Lucy Bush Find users q = Query.new("Bob Presley, Cox, Lucy") q.find_users => {0=>{:name=>"Bob", :lastname=>"Presley"}, 1=>{:lastname=>"Cox"}, 2=>{:name=>"Lucy"}} Question: I've got hash with few names and lastnames. I need to build Activerecord query to fetch all users from that hash. I can do object = [] hash = q.find_users hash.each do |data| #check if data[:lastname] and data[:name] exist # object << User.where(:name => ..., :lastname => ...) end But I think it is higly inefficient. How should I do this ?

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  • Git pre-receive hook

    - by Ralphz
    Hi When you enable pre-receive hook for git repository: It takes no arguments, but for each ref to be updated it receives on standard input a line of the format: < old-value SP < new-value SP < ref-name LF where < old-value is the old object name stored in the ref, < new-value is the new object name to be stored in the ref and is the full name of the ref. When creating a new ref, < old-value is 40 0. Does anyone can explain me how do I examine all the files that will be changed in the repository if i allow this commit? I'd like to run that files through some scripts to check syntax and so on. Thanks.

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  • Is it a good idea to create an STL iterator which is noncopyable?

    - by BillyONeal
    Most of the time, STL iterators are CopyConstructable, because several STL algorithms require this to improve performance, such as std::sort. However, I've been working on a pet project to wrap the FindXFile API (previously asked about), but the problem is it's impossible to implement a copyable iterator around this API. A find handle cannot be duplicated by any means -- DuplicateHandle specifically forbids passing handles to it. And if you just maintain a reference count to the find handle, then a single increment by any copy results in an increment of all copies -- clearly that is not what a copy constructed iterator is supposed to do. Since I can't satisfy the traditional copy constructible requirement for iterators here, is it even worth trying to create an "STL style" iterator? On one hand, creating some other enumeration method is going to not fall into normal STL conventions, but on the other, following STL conventions are going to confuse users of this iterator if they try to CopyConstruct it later. Which is the lesser of two evils?

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  • Jquery - Errors only in Internet Explorer

    - by Gublooo
    Hey Guys I am getting several errors only on IE8 running on my vista OS. On the other browsers (Chrome, FF, Safari) everything works fine. Not sure where to begin looking. When I open a new IE8 browser and enter the homepage URL of my website - I get the following error and the page opens up blank: Line: 19 Character: 12043 Code: 0 Error Message: Object required URL: http://xyz.com/js/jquery.js Then in one other place - I have a modal form which has a text area - when I start typing - after typing every character - this error shows up Line: 19 Character: 30711 Code: 0 Error Message: 'this[...].style' is null or not an object URL: http://xyz.com/js/jquery.js Thanks for your help

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  • ajax response byte size

    - by Alex Pacurar
    Im using jQuery's getJSONP and I want to log the duration of the call and the size of the response to be able to have some statistics about the usage of my application. This is a cross domain ajax call, so I need to use JSONP, but as the JSONP call is not done with an XMLHttpRequest object, the complete callback from jquery's ajax doesnt pass the response content. So my question is how to get the response size (content lenght) from a JSONP call. $.ajaxSetup( { complete:function(x,e) { log(x.responseText.length, x.responseText); } } here x is a XMLHttpRequest object for a JSON call , but for JSONP call is undefined.

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  • How to rectify InvalidActiveXStateException in WPF?

    - by Gagan
    I am trying to make a WPF Application and using the Visio Controls. I have a dll named AxInterop.Microsoft.Office.Interop.VisOcx and I refer it to instantiate an object of the type AxDrawingControl(). Now as soon as I write this code: AxDrawingControl objDrawControl=new AxDrawingControl(); and check the attributes of this object objDrawControl in the debug mode, I see this message: Exception of type 'System.Windows.Forms.AxHost+InvalidActiveXStateException' was thrown. Here is how it looks like: Please help me to get this thing resolved! Please! I just realized the image isn't visible. So here is the link of the image showing the error message: http://www.freeimagehosting.net/uploads/fed103f4d3.jpg

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  • jQuery style Constructors in PHP

    - by McB
    Is there a way to instantiate a new PHP object in a similar manner to those in jQuery? I'm talking about assigning a variable number of arguments when creating the object. For example, I know I could do something like: ... //in my Class __contruct($name, $height, $eye_colour, $car, $password) { ... } $p1 = new person("bob", "5'9", "Blue", "toyota", "password"); But I'd like to set only some of them maybe. So something like: $p1 = new person({ name: "bob", eyes: "blue"}); Which is more along the lines of how it is done in jQuery and other frameworks. Is this built in to PHP? Is there a way to do it? Or a reason I should avoid it?

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  • Drupal Views pulling Data Fields

    - by askon
    I'm a little new to drupal but have been using things like devel module and theme developer to speed up the learning process. My question, is it possible to theme an entire views BLOCK from a single views tpl.php page OR even a preprocess? When I'm grabbing the $view object I can see results $node-result, it has all of the results, but it doesn't have all my views fields. I'm missing things like, node path, taxonomy titles and paths, etc. From my understanding, Drupal wants you to individually theme EACH output field. It seems rather superfluous to create so many extra templates when I've already got over HALF of my results coming through the $view object Would outputting node over field make this easier? Or am going in the wrong direction with $view-result? Thanks!

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  • Anything wrong with this code?

    - by ct2k7
    I am using this to determine which view to go to next, from the result as input from UITableView. The following code isn't working, but I think it should be! Do you see anything wrong with it? NSString *option = [menuArray objectAtIndex:indexPath.row]; if (option == @"New Transaction"){ NTItems *nTItemsController = [[NTItems alloc] initWithNibName:@"NTItems" bundle:nil]; // Pass the selected object to the new view controller. [self.navigationController pushViewController:nTItemsController animated:YES]; [NTItems release];} else if (option == @"Previous Transactions"){} else if (option == @"Reprint a reciept"){} else if (option == @"Settings"){} else if (option == @"Logout"){ LoginViewController *nTItemsController = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:nil]; // Pass the selected object to the new view controller. [self.navigationController pushViewController:nTItemsController animated:YES]; [LoginViewController release]; }

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  • ASP.NET GridView sorting on method data

    - by husainnz
    Hi, I'm binding a GridView to a domain model object, this domain model object has a method for working out a formatted value to display on the grid. I'd like to use this method for my display value, which is fine, but I'd also like to be able to sort on the value returned by that method. My sort expression can only take in a property/field at the moment. Help please! What do I need to do to get this to work? I'm using an SPGridView actually, but that doesn't make a lot of difference to my problem. Thanks.

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