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• Do I need to use any other attributes other than CssClassProperty to enabled design-time support?

  - by keith

  Hi, I'm trying to provide the same design-time support that the CssClass provides on some custom properties of a server control. The documentation suggests that decorating the property with the CssClassProperty is all that's required. [CssClassProperty] public string SomeOtherCssClass{get;set;} This has no effect, in vs2008 or vs2010. I've looked at the WebControl class using reflector and implemented all the attributes, and every combination thereof, to my property and still no class dropdown. Some blog posts suggest that the use of the Editor attribute but a) there's not mention of it in the documentation and b) none of editors which are remotely related to css classes have any effect either. Am I missing something to enable this feature? Thanks in advance, Keith.

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• Load application context problem in Maven managed spring-test TestNg

  - by joejax

  I try to setup a project with spring-test using TestNg in Maven. The code is like: @ContextConfiguration(locations={"test-context.xml"}) public class AppTest extends AbstractTestNGSpringContextTests { @Test public void testApp() { assert true; } } A test-context.xml simply defined a bean: <bean id="app" class="org.sonatype.mavenbook.simple.App"/> I got error for Failed to load ApplicationContext when running mvn test from command line, seems it cannot find the test-context.xml file; however, I can get it run correctly inside Eclipse (with TestNg plugin). So, test-context.xml is under src/test/resources/, how do I indicate this in the pom.xml so that 'mvn test' command will work? Thanks, UPDATE: Thanks for the reply. Cannot load context file error was caused by I moved the file arround in different location since I though the classpath was the problem. Now I found the context file seems loaded from the Maven output, but the test is failed: Running TestSuite May 25, 2010 9:55:13 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions INFO: Loading XML bean definitions from class path resource [test-context.xml] May 25, 2010 9:55:13 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.context.support.GenericApplicationContext@171bbc9: display name [org.springframework.context.support.GenericApplicationContext@171bbc9]; startup date [Tue May 25 09:55:13 PDT 2010]; root of context hierarchy May 25, 2010 9:55:13 AM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.context.support.GenericApplicationContext@171bbc9]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1df8b99 May 25, 2010 9:55:13 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1df8b99: defining beans [app,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor]; root of factory hierarchy Tests run: 3, Failures: 2, Errors: 0, Skipped: 1, Time elapsed: 0.63 sec If I use spring-test version 3.0.2.RELEASE, the error becomes: org.springframework.test.context.testng.AbstractTestNGSpringContextTests.springTestContextPrepareTestInstance() is depending on nonexistent method null Here is the structure of the project: simple |-- pom.xml `-- src |-- main | `-- java `-- test |-- java `-- resources |-- test-context.xml `-- testng.xml testng.xml: <suite name="Suite" parallel="false"> <test name="Test"> <classes> <class name="org.sonatype.mavenbook.simple.AppTest"/> </classes> </test> </suite> test-context.xml: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" default-lazy-init="true"> <bean id="app" class="org.sonatype.mavenbook.simple.App"/> </beans> In the pom.xml, I add testng, spring, and spring-test artifacts, and plugin: <dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>5.1</version> <classifier>jdk15</classifier> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring</artifactId> <version>2.5.6</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>2.5.6</version> <scope>test</scope> </dependency> <build> <finalName>simple</finalName> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <configuration> <suiteXmlFiles> <suiteXmlFile>src/test/resources/testng.xml</suiteXmlFile> </suiteXmlFiles> </configuration> </plugin> </plugins> Basically, I replaced 'A Simple Maven Project' Junit with TestNg, hope it works.

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• Silverlight: DataContractSerializer cannot handle read only collection properties

  - by moonground.de

  Hey Stackoverflowers :) For our Silverlight Project (SL4) I'm using a Model which might contain Lists (IList<AnotherModel>). According to good practice and rule CA2227:CollectionPropertiesShouldBeReadOnly the IList properties don't have a public setter. We serialize the Model using the DataContractSerializer which is working. But when I try to deserialize, a SecurityException is thrown by DataContractSerializer's ReadObject(Stream) Method, complaining that the target property (pointing to the IList property) cannot be set due to a missing public setter. Since the DataContractSerializer is sealed and neither extendable nor flexible so I currently see no chance to add some kind of additional rules which allow to deserialize the ILists using a foreach-loop on Add() method or some other method of transferring the collection items. I've also tried to dig into DataContractSerializer source (using Reflector) to create a little fork but it looks like i'd have to dig very deep and replicating whole serialization classes doesn't seem to be a viable solution. Do you see another chance to serialize a List with no public setter using the DataContractSerializer? Thank you very much in advance for your ideas! Thomas

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• paypal API in VB.net

  - by StealthRT

  Hey all, i have converted some C# PayPal API Code over to VB.net. I have added that code to a class within my project but i can not seem to access it: Imports System Imports com.paypal.sdk.services Imports com.paypal.sdk.profiles Imports com.paypal.sdk.util Namespace GenerateCodeNVP Public Class GetTransactionDetails Public Sub New() End Sub Public Function GetTransactionDetailsCode(ByVal transactionID As String) As String Dim caller As New NVPCallerServices() Dim profile As IAPIProfile = ProfileFactory.createSignatureAPIProfile() profile.APIUsername = "xxx" profile.APIPassword = "xxx" profile.APISignature = "xxx" profile.Environment = "sandbox" caller.APIProfile = profile Dim encoder As New NVPCodec() encoder("VERSION") = "51.0" encoder("METHOD") = "GetTransactionDetails" encoder("TRANSACTIONID") = transactionID Dim pStrrequestforNvp As String = encoder.Encode() Dim pStresponsenvp As String = caller.[Call](pStrrequestforNvp) Dim decoder As New NVPCodec() decoder.Decode(pStresponsenvp) Return decoder("ACK") End Function End Class End Namespace I am using this to access that class: Private Sub cmdGetTransDetail_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdGetTransDetail.Click Dim thereturn As String thereturn =GetTransactionDetailsCode("test51322") End Sub But it keeps telling me: Error 2 Name 'GetTransactionDetailsCode' is not declared. I'm new at calling classes in VB.net so any help would be great! :o) David

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• Running each JUnit test in a separate JVM in Eclipse?

  - by HenryR

  I have a project with nearly 500 individual tests in around 200 test classes. Some of these tests don't do a great job of tearing down their own state after they're finished, and in Eclipse this results in some tests failing. The tests all pass when running the test suite from the command line via Ant. Can I enable 'test isolation' somehow in Eclipse? I don't mind if it takes longer to run. Long term, I will clean up the misbehaving tests, but in the short term I'd like to get the tests working.

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• Getting started with zxing on android

  - by amitlicht

  Hi I'm trying to add zxing to my project (add a button which calls the scanner upon press). I found this: http://groups.google.com/group/android-developers/browse_thread/thread/788eb52a765c28b5 and of course the zxing homesite: http://code.google.com/p/zxing/, but still couldn't figure out what to include in the project classpath to make it all work! as for now, I copied the classes in the first link to my project (with some package name changes), and it runs but crashes after pressing the button and trying to install the barcode scanner. some code: private void setScanButton(){ Button scan = (Button) findViewById(R.id.MainPageScanButton); scan.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { IntentIntegrator.initiateScan(MyActivity.this); } }); } resulting error (from logcat): 06-13 15:26:01.540: ERROR/AndroidRuntime(1423): Uncaught handler: thread main exiting due to uncaught exception 06-13 15:26:01.560: ERROR/AndroidRuntime(1423): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=market://search?q=pname:com.google.zxing.client.android } Ideas?

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• BlazeDS - Conversion from ArrayList <BaseClass> on java side to Actionscript

  - by user294280

  Hi, So we have a java class with two ArrayLists of generics. It looks like public class Blah { public ArrayList<ConcreteClass> a; public ArrayList<BaseClass> b; } by using [ArrayElementType('ConcreteClass')] in the actionscript class, we are able to get all the "a"s converted fine. However with "b", since the actual class coming across the line is a heterogeneous mix of classes like BaseClassImplementation1, BaseClassImplementation2 etc, it gets typed as an object. Is there a way to convert it to the specific concrete class assuming that a strongly typed AS version of the java class exists on the client side thanks for your help! Regis

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• m2eclipse and WTP and adding local project source

  - by user228369

  Hi, I have a spring mvc project in eclipse, and its setup to use maven. I can resolve all my external dependencies, but now I want to include another local project in my workspace. Normally, I would do this through the java build path, and add a project reference. But if I do that manually, m2eclipse just removes those references from my classpath file. I'm assuming this is because maven wants to handle all dependencies. So I enable dependency management on the local project (the source files i want to include), and now when I add dependencies, this project shows up, and it adds it as a jar type (which is correct). I also ran maven-package to create a snapshot of the source project. But the jar is never added in the maven library list, and the project doesn't build because it can't find the classes. What am I doing wrong? Thanks for the help!

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• How are views constructed in Josh Smith's MVVM sample?

  - by Wim Coenen

  Being new to both WPF and MVVM, I'm studying Josh Smith's article on the MVVM pattern and the accompanying sample code. I can see that the application is started in app.xaml.cs by constructing a MainWindow object, wiring it to a MainWindowViewModel object and then showing the main window. So far so good. However, I can't find any code which instantiates the AllCustomersView or CustomerView classes. Using "find all references" on the constructors of those views comes up with nothing. What am I missing here?

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• How do I aggregate results from an Adjacency list using PHP's SPL

  - by Stephen J. Fuhry

  I've tried using nested sets, and they become very difficult to maintain when dealing with multiple trees and lots of other complications.. I'd like to give PHP's SPL library a stab at this (btw, we are PHP 5.3, MySQL 5.1). Given two datasets: The Groups: +-------+--------+---------------------+---------------+ | id | parent | Category Name | child_key | +-------+--------+---------------------+---------------+ | 11133 | 7707 | Really Cool Products| 47054 | | 7709 | 7708 | 24" Monitors | 57910 | | 7713 | 7710 | Hot Tubs | 35585 | | 7716 | 7710 | Hot Dogs | 00395 | | 11133 | 7707 | Really Cool Products| 66647 | | 7715 | 7710 | Suction Cups | 08396 | +-------+--------+---------------------+---------------+ The Items +------------+------------+-----------+----------+---------+ | child_key | totalprice | totalcost | totalqty | onorder | (jan, feb, mar..) +------------+------------+-----------+----------+---------+ | 24171 | 10.50 | 20.10 | 200 | 100 | | 35685 | 10.50 | 20.10 | 200 | 100 | | 76505 | 10.50 | 20.10 | 200 | 100 | | 04365 | 10.50 | 20.10 | 200 | 100 | | 01975 | 10.50 | 20.10 | 200 | 100 | | 12150 | 10.50 | 20.10 | 200 | 100 | | 40060 | 10.50 | 20.10 | 200 | 100 | | 08396 | 10.50 | 20.10 | 200 | 100 | +------------+------------+-----------+----------+---------+ The figures are actually much more complicated than this (I am actually aggregating a variable amount of months or years over the past 15yrs, so there may need to be 20 columns of aggregated results). I have been trying to figure out RecursiveIterator and IteratorAggregate, but I am having a difficult time finding real world examples that are generic enough to really wrap my head around these classes. Can someone give me a head start?

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• C# Access the Properties of a Generic Object

  - by Jimbo

  I have a method that counts the number of Contacts each Supplier, Customer and Manufacturer has (this is a scenario to try make explaining easier!) The models are all created by Linq to SQL classes. Each Supplier, Customer and Manufacturer may have one or more Contacts public int CountContacts<TModel>(TModel entity) where TModel : class { return entity.Contacts.Count(); } The above of course doesnt work, because the 'entity' is generic and doesnt know whether it has the property 'Contacts'. Can someone help with how to achieve this?

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• Share code between projects in a solution in Visual Studio 2008, when building a common assembly is

  - by Binary255

  Hi, I create an add-on for the product Foo. There are different versions of Foo, namely version 1, 2, 3 and 4. These versions have a mostly compatible API, but not fully. I currently have 5 projects: DotNetCommon - here are the common methods which could be used if I create an add-on or something other than the Foo product. FooOne FooTwo FooThree FooFour The Foo*-projects contains the add-in for version 1-4 of Foo. There are a lot of duplicated files in the Foo*-projects, as there are a lot of things in the API which are identical for all versions of Foo. It would be nice to separate out everything which is common for all Foo-versions. Why not just create a common assembly for all versions of Foo called FooCommon? If I would put all classes which are common for all versions of Foo into a new library project, I would still have to choose which version of Foo the new FooCommon should reference. As said, they are not identical.

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• Composite Key Dictionary

  - by AaronLS

  I have some objects in List, let's say List<MyClass> and MyClass has several properties. I would like to create an index of the list based on 3 properties of of MyClass. In this case 2 of the properties are int's, and one property is a datetime. Basically I would like to be able to do something like: Dictionary< CompositeKey , MyClass > MyClassListIndex = Dictionary< CompositeKey , MyClass >(); //Populate dictionary with items from the List<MyClass> MyClassList MyClass aMyClass = Dicitonary[(keyTripletHere)]; I sometimes create multiple dictionaries on a list to index different properties of the classes it holds. I am not sure how best to handle composite keys though. I considered doing a checksum of the three values but this runs the risk of collisions.

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• Sourcecode for Paymentroll example in Robert C. Martin book

  - by bitbonk

  Throughout the book "Agile Principles, Patterns, and Practices in C#" by Robert C. Martin a small Paymentroll application is build. While most of the source code is printed in place, some classes are missing and some are incomplete. The book says on the firest page: The book includes many source code examples that are also available for download from the authors' Web site. Unfortunately this seems to be a lie. Unless either this is not the author's website (the book forgets to mention the authors website adress) or I am blind. Does anyone have the comlete source code for that book preferably in form of a Visual Studio project or knows where I can find it.

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• Graphviz DOT arrange Nodes in circles

  - by Ivo Wetzel

  OK here's my problem, I'm generating a graph of a python module, including all the files with their functions/methods/classes. I want to arrange it so, that nodes gather in circles around their parent nodes, currently everything is on one gargantuan horizontal row, which makes the thing 50k pixels wide and also let's the svg converter fail(only renders about the half of the graph). I went trough the docs(http://www.graphviz.org/doc/info/attrs.html) but couldn't find anything that seems to do the trick. So the question is: Is there a simple way to do this or do I have to layout the whole thing by myself? :/

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• Failed MDADM Array With Ext.4 Partition - "e2fsck: unable to set superblock flags on /dev/md0"

  - by Matthew Hodgkins

  Had a power failure and now my mdadm array is having problems. sudo mdadm -D /dev/md0 [hodge@hodge-fs ~]$ sudo mdadm -D /dev/md0 /dev/md0: Version : 0.90 Creation Time : Sun Apr 25 01:39:25 2010 Raid Level : raid5 Array Size : 8790815232 (8383.57 GiB 9001.79 GB) Used Dev Size : 1465135872 (1397.26 GiB 1500.30 GB) Raid Devices : 7 Total Devices : 7 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Sat Aug 7 19:10:28 2010 State : clean, degraded, recovering Active Devices : 6 Working Devices : 7 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 128K Rebuild Status : 10% complete UUID : 44a8f730:b9bea6ea:3a28392c:12b22235 (local to host hodge-fs) Events : 0.1307608 Number Major Minor RaidDevice State 0 8 81 0 active sync /dev/sdf1 1 8 97 1 active sync /dev/sdg1 2 8 113 2 active sync /dev/sdh1 3 8 65 3 active sync /dev/sde1 4 8 49 4 active sync /dev/sdd1 7 8 33 5 spare rebuilding /dev/sdc1 6 8 16 6 active sync /dev/sdb sudo mount -a [hodge@hodge-fs ~]$ sudo mount -a mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so sudo fsck.ext4 /dev/md0 [hodge@hodge-fs ~]$ sudo fsck.ext4 /dev/md0 e2fsck 1.41.12 (17-May-2010) fsck.ext4: Group descriptors look bad... trying backup blocks... /dev/md0: recovering journal fsck.ext4: unable to set superblock flags on /dev/md0 sudo dumpe2fs /dev/md0 | grep -i superblock [hodge@hodge-fs ~]$ sudo dumpe2fs /dev/md0 | grep -i superblock dumpe2fs 1.41.12 (17-May-2010) Primary superblock at 0, Group descriptors at 1-524 Backup superblock at 32768, Group descriptors at 32769-33292 Backup superblock at 98304, Group descriptors at 98305-98828 Backup superblock at 163840, Group descriptors at 163841-164364 Backup superblock at 229376, Group descriptors at 229377-229900 Backup superblock at 294912, Group descriptors at 294913-295436 Backup superblock at 819200, Group descriptors at 819201-819724 Backup superblock at 884736, Group descriptors at 884737-885260 Backup superblock at 1605632, Group descriptors at 1605633-1606156 Backup superblock at 2654208, Group descriptors at 2654209-2654732 Backup superblock at 4096000, Group descriptors at 4096001-4096524 Backup superblock at 7962624, Group descriptors at 7962625-7963148 Backup superblock at 11239424, Group descriptors at 11239425-11239948 Backup superblock at 20480000, Group descriptors at 20480001-20480524 Backup superblock at 23887872, Group descriptors at 23887873-23888396 Backup superblock at 71663616, Group descriptors at 71663617-71664140 Backup superblock at 78675968, Group descriptors at 78675969-78676492 Backup superblock at 102400000, Group descriptors at 102400001-102400524 Backup superblock at 214990848, Group descriptors at 214990849-214991372 Backup superblock at 512000000, Group descriptors at 512000001-512000524 Backup superblock at 550731776, Group descriptors at 550731777-550732300 Backup superblock at 644972544, Group descriptors at 644972545-644973068 Backup superblock at 1934917632, Group descriptors at 1934917633-1934918156 sudo e2fsck -b 32768 /dev/md0 [hodge@hodge-fs ~]$ sudo e2fsck -b 32768 /dev/md0 e2fsck 1.41.12 (17-May-2010) /dev/md0: recovering journal e2fsck: unable to set superblock flags on /dev/md0 sudo dmesg | tail [hodge@hodge-fs ~]$ sudo dmesg | tail EXT4-fs (md0): ext4_check_descriptors: Checksum for group 0 failed (59837!=29115) EXT4-fs (md0): group descriptors corrupted! EXT4-fs (md0): ext4_check_descriptors: Checksum for group 0 failed (59837!=29115) EXT4-fs (md0): group descriptors corrupted! Please Help!!!

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• Setting freemarker template from classpath

  - by wuntee

  I have a web application that I need to manually obtain a Freemarker template - the template is obtained via a class in a library project, but the actual tpl file is contained in the web application classpath. So, there are 2 projects, one 'taac-backend-api' and another 'taac-web'; taac-backend-api has the code to grab the template, and process it, but taac-web is where the template is stores (specifically in: WEB-INF/classes/email/vendor.tpl) - I have tried everything from using springs classpath resource to using Freemarkers setClassForTemplateLoading method. I assume this would work: freemarkerConfiguration = new Configuration(); freemarkerConfiguration.setClassForTemplateLoading(this.getClass(), ""); Template freemarkerTemplate = freemarkerConfiguration.getTemplate("/email/vendor.tpl"); yet, I always get a FileNotFoundException. Can someone explain the best way to obtain a template from the classpath? Thanks.

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• Unit Testing iPhone - Linker Errors

  - by sliver

  I've followed the Unit Testing Applications guide from the iPhone Development documentation. I followed all the steps and it worked with the TestCase from the documentation. But as soon as I changed the TestCase to test real Code from my project I ended up with linker errors. All classes that are used in the TestCase are reported as missing. I've already searched the internet and found that the Bundle Loader property must be set to "$(BUILT_PRODUCTS_DIR)/MyApplication.app/Contents/MacOS/MyApplication". But this also fails because the file could not be found. Any ideas what I have to do to tell the linker where to search for the missing files?

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• C# where does the dbml file come from?

  - by 5YrsLaterDBA

  Learning C# and learing Linq now. have lots of qestions about it. Basically I need a step by step tutorial. I suppose the dbml file is the configuration file of the database. I double click it and VS will open it with kind of design diagram. I can create/delete/modify table here? I can use add new item to add the Linq to SQL Classes to get a dbml file? what's next? generate tables in database? generate sql script? generate cs files? when? how?

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• Marshall a list of objects from VB6 to C#

  - by Andrew

  I have a development which requires the passing of objects between a VB6 application and a C# class library. The objects are defined in the C# class library and are used as parameters for methods exposed by other classes in the same library. The objects all contain simple string/numeric properties and so marshaling has been relatively painless. We now have a requirement to pass an object which contains a list of other objects. If I was coding this in VB6 I might have a class containing a collection as a member variable. In C# I might have a class with a List member variable. Is it possible to construct a C# class in such a way that the VB6 application could populate this inner list and marshal it successfully? I don't have a lot of experience here but I would guess Id have to use an array of Object types.

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• Moving a sprite around the circumference of a circle in Cocos2d-iPhone

  - by CircleOfLife

  I am new to Cocos2d. I have taken a look at the documentation at it looks pretty simple compared to what you need to do using basic Iphone classes such as UIAnimation etc. I want to move a Sprite (eg. Bird, Plane or Car) around the center of a circle around its circumference, smoothly so that even the sprite rotates accordingly. How is this possible in Cocos2d? It would be very helpful if someone can post some basic code. Thanks.

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• PHP - can a method return a pointer?

  - by Kerry

  I have a method in a class trying to return a pointer: <?php public function prepare( $query ) { // bla bla bla return &$this->statement; } ?> But it produces the following error: Parse error: syntax error, unexpected '&' in /home/realst34/public_html/s98_fw/classes/sql.php on line 246 This code, however, works: <?php public function prepare( $query ) { // bla bla bla $statement = &$this->statement; return $statement; } ?> Is this just the nature of PHP or am I doing something wrong?

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• Sensor Manager getOrientation, doesnt display text and only works in debug mode?

  - by Aidan

  Hi Guys, My code appears to crash. I'm trying to setup a SensorManager for getting the Orientation of the device. I also have a listener that should update when conditions change. But when I run this code it crashes... public void sensor(){ // Locate the SensorManager using Activity.getSystemService sm = (SensorManager) getSystemService(SENSOR_SERVICE); sm.getOrientation(mR, mOrientation); // Register your SensorListener sm.registerListener(sl, sm.getDefaultSensor(Sensor.TYPE_ORIENTATION),SensorManager.SENSOR_DELAY_NORMAL); } private final SensorEventListener sl = new SensorEventListener() { @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } @Override public void onSensorChanged(SensorEvent event) { if (event.sensor.getType()==Sensor.TYPE_ORIENTATION) { Global.Orientation = "Orientation is equal to: "+ SensorManager.getOrientation(mR, mOrientation); } } sm is defined as SensorManager sm; as a class wide variable also. I've got some other classes outputting the Orientation to a screen which I know works. The problem is somewhere in these methods. Am I doing it wrong or Is there a better way of doing this?

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• tolua++: Adding lua functions to a C++ class that has been exported to Lua

  - by skyeagle

  I am using tolua++ to export some C++ classes to Lua. My understanding that each class is 'implemented' on the lua side, as a lua table. I am wondering if it is possible therefore, to add new (Lua) methods to the C++ object table so that I can achieve the effect of adding new methods to the C++ class. Assume that I am exporting the class Foobar. Methods of Foobar will be accessisble in Lua as follows: Foobar:method1() Foobar:method2() ... etc. I would like to be able to add new methods (newmethod1, and newmethod2) to the Foobar table "object" I have the following questions: Is it possible to 'extend' the functionality of an exported C++ object in the manner I described above? How would one go about add new functions to the Foobar table? (I am relatively new to Lua)

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• How To AutoScroll a DataGridView during Drag and Drop

  - by Mason

  One of the forms in my C# .NET application has multiple DataGridViews that implement drag and drop to move the rows around. The drag and drop mostly works right, but I've been having a hard time getting the DataGridViews to AutoScroll - when a row is dragged near the top or bottom of the box, to scroll it in that direction. So far, I've tried implementing a version of this solution. I have a ScrollingGridView class inheriting from DataGridView that implements the described timer, and according to the debugger, the timer is firing appropriately, but the timer code: SendMessage(Handle, WM_VSCROLL, (IntPtr)scrollDirectionInt, IntPtr.Zero); doesn't do anything as far as I can tell, possibly because I have multiple DataGridViews in the form. I also tried modifying the AutoScrollOffset property, but that didn't do anything either. Investigation of the DataGridView and ScrollBar classes doesn't seem to suggest any other commands or functions that will actually make the DataGridView scroll. Can anyone help me with a function that will actually scroll the DataGridView, or some other way to solve the problem?

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