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• Is there a way to initialize ImageKit's IKSaveOptions to default to TIFF with LZW compression?

  - by Rei

  I'm using Mac OS X 10.6 SDK ImageKit's IKSaveOptions to add the file format accessory to an NSSavePanel using: - (id)initWithImageProperties:(NSDictionary *)imageProperties imageUTType:(NSString *)imageUTType; and - (void)addSaveOptionsAccessoryViewToSavePanel:(NSSavePanel *)savePanel; I have tried creating an NSDictionary to specify Compression = 5, but I cannot seem to get the IKSaveOptions to show Format:TIFF, Compression:LZW when the NSSavePanel first appears. I've also tried saving the returned imageProperties dictionary and the userSelection dictionary, and then tried feeding that back in for the next time, but the NSSavePanel always defaults to Format:TIFF with Compression:None. Does anyone know how to customize the default format/compression that shows up in the accessory view? I would like to default the save options to TIFF/LZW and furthermore would like to restore the user's last file format choice for next time. I am able to control the file format using the imageUTType (e.g. kUTTypeJPEG, kUTTypePNG, kUTTypeTIFF, etc) but I am still unable to set the initial compression option for TIFF or JPEG formats. Thanks, -Rei

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• Compiling OpenSSL for boost asio for Microsoft Visual Studio 2010

  - by user560106

  I compiled boost with bjam, and then I compiled OpenSSL. Both of them work separately. I set up the links in Visual Studio 10 to point to my OpenSSL library directory. But when I attempt to compile example boost ssl asio programs I get 44 unresolved external linker errors like this one: 1testing.obj : error LNK2019: unresolved external symbol _SSLv23_server_method referenced in function "public: void __thiscall boost::asio::ssl::detail::openssl_context_service::create(struct ssl_ctx_st * &,enum boost::asio::ssl::context_base::method)" (?create@openssl_context_service@detail@ssl@asio@boost@@QAEXAAPAUssl_ctx_st@@W4method@context_base@345@@Z) Can you please give me step-by-step instructions on properly linking OpenSSL to boost? Thank you so much

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• C++ Access violation when calling dll function

  - by Manjoor

  I have a function definition in my VC++ Win32 DLL DEMO2_API void ProcessData(char* i_buff, unsigned short i_len, char* o_buf, unsigned *o_len, unsigned short *errorCode) { __describe (i_buff,&i_len,o_buf,o_len,errorCode); } This dll function is called by a c# application. When called, it generate access violation exception. After reasearching i found, the cause for my problem. http://social.msdn.microsoft.com/Forums/en-US/csharplanguage/thread/6e843243-baf4-4eb1-8a20-c691ad47762c But could not understand what exactly they are doinng in example code. Can someone explain it so me? And what would be P/Invoke signature in c# after externally allocating memory?

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• Dictionary with delegate or swith?

  - by Samvel Siradeghyan

  Hi, I am writting a parser, which call some functions dependent on some value. I can implement this logic with simple switch like this swith(some_val) { case 0: func0(); break; case 1: func1(); break; } or with delegates and dictinary like this delegate void some_delegate(); Dictinary some_dictinary = new Dictinary(); some_dictinary[0] = func0; some_dictinary[1] = func1; some_dictinary[some_value].Invoke(); Are this two metods equal and wich is prefered? Thanks.

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• Custom Logic and Proxy Classes in ADO.NET Data Services

  - by rasx

  I've just read "Injecting Custom Logic in ADO.NET Data Services" and my next question is, How do you get your [WebGet] method to show up in the client-side proxy classes? Sure, I can call this directly (RESTfully) with, say, WebClient but I thought the strong typing features in ADO.NET Data Services would "hide" this from me auto-magically. So here we have: public class MyService : DataService<MyDataSource> { // This method is called only once to initialize service-wide policies. public static void InitializeService(IDataServiceConfiguration config) { config.SetEntitySetAccessRule("Customers", EntitySetRights.AllRead); config.SetServiceOperationAccessRule("CustomersInCity", ServiceOperationRights.All); } [WebGet] public IQueryable<MyDataSource.Customers> CustomersInCity(string city) { return from c in this.CurrentDataSource.Customers where c.City == city select c; } } How can I get CustomersInCity() to show up in my client-side class defintions?

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• Resolving HttpRequestScoped Instances outside of a HttpRequest in Autofac

  - by Page Brooks

  Suppose I have a dependency that is registered as HttpRequestScoped so there is only one instance per request. How could I resolve a dependency of the same type outside of an HttpRequest? For example: // Global.asax.cs Registration builder.Register(c => new MyDataContext(connString)).As<IDatabase>().HttpRequestScoped(); _containerProvider = new ContainerProvider(builder.Build()); // This event handler gets fired outside of a request // when a cached item is removed from the cache. public void CacheItemRemoved(string k, object v, CacheItemRemovedReason r) { // I'm trying to resolve like so, but this doesn't work... var dataContext = _containerProvider.ApplicationContainer.Resolve<IDatabase>(); // Do stuff with data context. } The above code throws a DependencyResolutionException when it executes the CacheItemRemoved handler: No scope matching the expression 'value(Autofac.Builder.RegistrationBuilder`3+<c__DisplayClass0[MyApp.Core.Data.MyDataContext,Autofac.Builder.SimpleActivatorData,Autofac.Builder.SingleRegistrationStyle]).lifetimeScopeTag.Equals(scope.Tag)' is visible from the scope in which the instance was requested.

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• java: how to compress data into a String and uncompress data from the String

  - by Guillaume

  I want to put some compressed data into a remote repository. To put data on this repository I can only use a method that take the name of the resource and its content as a String. (like data.txt + "hello world"). The repository is moking a filesystem but is not, so I can not use File directly. I want to be able to do the following: client send to server a file 'data.txt' server compress 'data.txt' into data.zip server send to repository content of data.zip repository store data.zip client download from repository data.zip and his able to open it with its favorite zip tool I have tried a lots of compressing example found on the web but each time a send the data to the repository, my resulting zip file is corrupted. Here is a sample class, using the zip*stream and that emulate the repository showcasing my problem. The created zip file is working, but after its 'serialization' it's get corrupted. (the sample class use jakarta commons.io ) Many thanks for your help. package zip; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; import java.util.zip.ZipOutputStream; import org.apache.commons.io.FileUtils; /** * Date: May 19, 2010 - 6:13:07 PM * * @author Guillaume AME. */ public class ZipMe { public static void addOrUpdate(File zipFile, File ... files) throws IOException { File tempFile = File.createTempFile(zipFile.getName(), null); // delete it, otherwise you cannot rename your existing zip to it. tempFile.delete(); boolean renameOk = zipFile.renameTo(tempFile); if (!renameOk) { throw new RuntimeException("could not rename the file " + zipFile.getAbsolutePath() + " to " + tempFile.getAbsolutePath()); } byte[] buf = new byte[1024]; ZipInputStream zin = new ZipInputStream(new FileInputStream(tempFile)); ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile)); ZipEntry entry = zin.getNextEntry(); while (entry != null) { String name = entry.getName(); boolean notInFiles = true; for (File f : files) { if (f.getName().equals(name)) { notInFiles = false; break; } } if (notInFiles) { // Add ZIP entry to output stream. out.putNextEntry(new ZipEntry(name)); // Transfer bytes from the ZIP file to the output file int len; while ((len = zin.read(buf)) > 0) { out.write(buf, 0, len); } } entry = zin.getNextEntry(); } // Close the streams zin.close(); // Compress the files if (files != null) { for (File file : files) { InputStream in = new FileInputStream(file); // Add ZIP entry to output stream. out.putNextEntry(new ZipEntry(file.getName())); // Transfer bytes from the file to the ZIP file int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } // Complete the entry out.closeEntry(); in.close(); } // Complete the ZIP file } tempFile.delete(); out.close(); } public static void main(String[] args) throws IOException { final String zipArchivePath = "c:/temp/archive.zip"; final String tempFilePath = "c:/temp/data.txt"; final String resultZipFile = "c:/temp/resultingArchive.zip"; File zipArchive = new File(zipArchivePath); FileUtils.touch(zipArchive); File tempFile = new File(tempFilePath); FileUtils.writeStringToFile(tempFile, "hello world"); addOrUpdate(zipArchive, tempFile); //archive.zip exists and contains a compressed data.txt that can be read using winrar //now simulate writing of the zip into a in memory cache String archiveText = FileUtils.readFileToString(zipArchive); FileUtils.writeStringToFile(new File(resultZipFile), archiveText); //resultingArchive.zip exists, contains a compressed data.txt, but it can not //be read using winrar: CRC failed in data.txt. The file is corrupt } }

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• Contracts vs Exceptions

  - by devoured elysium

  Let's assume I have the following code: public class MainClass { public static void main(String[] args) { System.out.println(sumNumbers(10, 10)); } //@requires a >= 10; //@ensures \result < 0; public static int sumNumbers(int a, int b) { return a+b; } } I can make 2 things here: Use Code Contracts (in this case, what is in comments). When sumNumbers is run and a < 10, it will throw immediatly an exception (although it doesn't seem to be very descriptive): Exception in thread "main" org.jmlspecs.jmlrac.runtime.JMLInternalNormalPostconditionError: by method MainClass.sumNumbers at MainClass.sumNumbers(MainClass.java:500) at MainClass.internal$main(MainClass.java:9) at MainClass.main(MainClass.java:286) or... Throw an exception. The exception can be as descriptive as I want. I'd also to check in the end of the function to see whenever the post conditions are true or not. Which would you use here and why?

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• Seemingly useless debugging environment for Android

  - by mikeY

  I've just started debugging my first three line long android app and I can't seem to use the debug tool like I want to. Here's my code: public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); int a = 1 / 0; } Now I expect the debugger to halt the thread and show me the line number of statement where the division by zero occurs. No, instead it shows some other method internal to the system for which I have no source. To make the matters worse, there is no exception message either. Prior to this app, I created one which would do something when a button was pressed. If any exception was raised, again no useful line number or exception message would be shown. As of right now, there is no way to debug my app. Any ideas? I'm using the latest SDK along with Eclipse ADT plugin and debugging on a real device (Nexus One).

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• How do I open android built in downloads app?

  - by user1502829

  So I'm downloading stuff and it gets put into the built in downloads app since thats how the download manager works. I just want to the user to click a button which opens the built in downloads app. Heres my try: btnDownloads.setOnClickListener(new Button.OnClickListener(){ public void onClick(View v) { PackageManager pakMan=MainActivity.context.getPackageManager(); Log.d("bebr", "Making pak"); if(pakMan!=null){ Intent downloadsIntent=new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName("com.android.downloads","com.android.downlods.Downloads")); ResolveInfo resolved=pakMan.resolveActivity(downloadsIntent, PackageManager.MATCH_DEFAULT_ONLY); Log.d("bebr","Resolving"); if(resolved!=null){ Log.d("bebr", "Starting"); startActivity(downloadsIntent); } } } });

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• Not able to capture Enter key in WinForms text box

  - by Michael Hermes

  When the user is entering a number into a text box, I would like them to be able to press Enter and simulate pressing an Update button elsewhere on the form. I have looked this up several places online, and this seems to be the code I want, but it's not working. When data has been put in the text box and Enter is pressed, all I get is a ding. What am I doing wrong? (Visual Studio 2008) private void tbxMod_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { btnMod.PerformClick(); } }

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• how to get the http header in asynchronous request mode using ASIHHTTP

  - by user262325

  Hello everyone I hope to display the download file size by reading http header. I know there is way do this: ASIHTTPRequest request = [ASIHTTPRequest requestWithURL:url]; [request startSynchronous]; NSString poweredBy = [[request responseHeaders] objectForKey:@"X-Powered-By"]; NSString *contentType = [[request responseHeaders] objectForKey:@"Content-Type"]; but this is Synchronous mode, in Asynchronous mode it can be done as below: (void)requestFinished:(ASIHTTPRequest *)request { unsigned long long contentLength = [request contentLength]; } but 'requestFinished' is at the end of download. Is there an event to get the http header info at the beginning of download? Thank interdev

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• no matching function for call to 'getline'

  - by WTP

  I have a class called parser: class parser { const std::istream& stream; public: parser(const std::istream& stream_) : stream(stream_) {} ~parser() {} void parse(); }; In parser::parse I want to loop over each line, so I use std::getline: std::getline(stream, line) The compiler gives me this error, however: src/parser.cc:10:7: error: no matching function for call to 'getline' std::getline(stream, line); ^~~~~~~~~~~~ But the first argument to std::getline is of type std::istream&, right? What could I be doing wrong?

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• Preserve images in Excel headers using Apache POI

  - by ddm

  I am trying to generate Excel reports using Apache POI 3.6 (latest). Since POI has limited support for header and footer generation (text only), I decided to start from a blank excel file with the header already prepared and fill the Excel cells using POI (cf. question 714172). Unfortunately, when opening the workbook with POI and writing it immediately to disk (without any cell manpulation), the header seems to be lost. Here is the code I used to test this behavior: public final class ExcelWorkbookCreator { public static void main(String[] args) { FileOutputStream outputStream = null; try { outputStream = new FileOutputStream(new File("dump.xls")); InputStream inputStream = ExcelWorkbookCreator.class.getResourceAsStream("report_template.xls"); HSSFWorkbook workbook = new HSSFWorkbook(inputStream, true); workbook.write(outputStream); } catch (Exception exception) { throw new RuntimeException(exception); } finally { if (outputStream != null) { try { outputStream.close(); } catch (IOException exception) { // Nothing much to do } } } } }

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• Saving an NSMutableArray of custom Objects

  - by aahrens

  I have a custom class that is used as a wrapper to an NSMutableArray @interface AllCourses : NSObject { NSMutableArray *arrClasses; } The array above stores Objects of another custom class. @interface Course : NSObject { NSString *className; NSString *classGrade; NSInteger creditHours; } I use the method below to add Course objects to my AllCourses //Adds a new Course to the total Courses -(void) addClass:(Course *)aCourse{ [arrClasses addObject:aCourse]; } What's going to be the best way to save the arrClasses MutableArray in AllCourses so that when my app loads it can keep the saved data the user already entered and populate it?

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• Objective-C method implementation nuances

  - by altdotnetgeek

  I have just started to develop for the iPhone and am in the process of learning Objective-C. I have seen some code that implements a method in the @implementation side of a class like this: -(void)myMethod; { // method body } What makes this interesting is that there is no mention of myMethod in the @interface for the class. I tried a sample project with this and when I compile I get a warning from XCode that myMethod may not be seen by the calling code. Can anyone tell me what is going on? Thanks!

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• Why is Java not telling me when I can't use Integer?

  - by Sebi

  For a small project (Problem 10 Project Euler) i tried to sum up all prime numbers below 2 millions. So I used a brute force method and iterated from 0 to 2'000'000 and checked if the number is a prime. If it is I added it to the sum: private int sum = 0; private void calculate() { for (int i = 0; i < 2000000; i++) { if (i.isPrime()) { sum = sum + i; } } sysout(sum) } The result of this calculation is 1179908154, but this is incorrect. So i changed int to BigInteger and now i get the correct sum 142913828922. Obviously the range of int was overflowed. But why can't Java tell my that? (e.g. by an exception)

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• How do you tell what object is being touched in touchesBegan?

  - by Flafla2

  I know that this is a very commonly asked question, but all of the answers on every website don't work! If you still don't know what I mean, then maybe this line of code will help you understand. - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:self.view]; if (touch.view == nextbutton) [self performSelector:@selector(next)]; if (touch.view == prevbutton) [self performSelector:@selector(previous)]; if (touch.view == moreoptionsbutton) [self performSelector:@selector(moresettings)]; } It doesn't do anything when you touch nextbutton, prevbutton, and more optionsbutton, which are UIImageViews by the way. I have also tried using isEqual: instead of ==, but that hasn't worked out either. Any suggestions?

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• Java Scripting Engine importing my classes does not work

  - by Ayman

  A code is worth 1000 words of explaining it :-) package jasim; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class JSTest { public static void main(String[] args) throws ScriptException { ScriptEngine jse = new ScriptEngineManager().getEngineByExtension("js"); jse.eval("println(new jasim.JSTest().toString)"); } @Override public String toString() { return "JSTest Object"; } } This code will fail with the below exception: Exception in thread "main" javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "jasim" is not defined. (<Unknown source>#1) in <Unknown source> at line number 1 How do I import my own classes into the ScriptEngine?

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• How to change the cursor type

  - by Jessy

  This question is related to the previous post. http://stackoverflow.com/questions/2532936/how-to-save-file-and-read How can I change the cursor to "Hand" only when the mouse pointed on grid which is not Null (contained images)? So far the cursor turn to "Hand" all over the grids (null or not null). public GUI() { .... JPanel pDraw = new JPanel(); .... for(Component component: pDraw.getComponents()){ JLabel lbl = (JLabel)component; //add mouse listener to grid box which contained image if (lbl.getIcon() != null) lbl.addMouseListener(this); } public void mouseEntered(MouseEvent e) { Cursor cursor = Cursor.getDefaultCursor(); //change cursor appearance to HAND_CURSOR when the mouse pointed on images cursor = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR); setCursor(cursor); }

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• C# - Process.Start - Pass html code to exe as argument

  - by dkirk

  Hello, I am using the code below to start a executable file from a windows service and I need to pass html code (stored in a variable) as an argument. I am escaping with double quotes but this is not working. What do I need to do in order to pass this correctly? Thanks in advance for any guidance that is offered. Inside the service: Process.Start(@"E:\Program Files\MyApp.exe", dr["rec"].ToString() + " \"" + subject + "\" \"" + htmlVar); and then within MyApp.exe: static void Main(string[] args) { Program MyProg = new Program(); MyProg.MyMeth(args[0].ToString(), args[1].ToString(), args[2].ToString()); }

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• GAE, JDO, count() doesn't work ?

  - by NilsBor

  On GAE with Spring/JDO after saving 2 entities (in transaction). On calling getById - entities fetched from data storage. On calling getCount() returns "0" and - on calling getAll() - returns empty collection. plz help me ! DAO: @Override public Long getCount() { return ((Integer) getJdoTemplate().execute(new JdoCallback() { @Override public Object doInJdo(PersistenceManager pm) throws JDOException { Query q = pm.newQuery(getPersistentClass()); q.setResult("count(this)"); return q.execute(); } })).longValue(); } @Override public void saveOrUpdate(T entity) { getJdoTemplate().makePersistent(entity); } @Override public List getAll() { return new ArrayList(getJdoTemplate().find(getPersistentClass())); }

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• Hibernate - PropertyNotFoundException: Could not find a getter for ...

  - by Ben Noland

  I have a class that looks like the following: public class MyClass { private String dPart1; public String getDPart1() { return dPart1; } public void setDPart1(String dPart1) { this.dPart1 = dPart1; } } My hibernate mapping file maps the property as follows: <property name="dPart1" not-null="true"/> I get the following error: org.hibernate.PropertyNotFoundException: Could not find a getter for dPart1 in class com.mypackage.MyClass at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:282) at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:275) at org.hibernate.mapping.Property.getGetter(Property.java:272) at org.hibernate.tuple.entity.PojoEntityTuplizer.buildPropertyGetter(PojoEntityTuplizer.java:247) at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:125) at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55) at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:56) at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:302) at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:434) at It appears that hibernate doesn't like my capitalization. How should I fix this?

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• In Android: How to Call Function of Activity from a Service?

  - by nex

  Hi folks, I have an Activity (A) and a Service (S) which gets started by A like this: Intent i = new Intent(); i.putExtra("updateInterval", 10); i.setClassName("com.blah", "com.blah.S"); startService(i); A have a function like this one in A: public void someInfoArrived(Info i){...} Now I want to call A.someInfoArrived(i) from within S. Intent.putExtra has no version where I could pass an Object reference etc ... Please help! PS: The other way around (A polling S for new info) is NOT what I need. I found enough info about how to do that.

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• In OpenGL vertex shader, gl_Position doesn't get homogenized..

  - by KJ

  Hi everyone, I was expecting gl_Position to automatically get homogenized (divided by w), but it seems not working.. Why do the followings make different results? 1) void main() { vec4 p; ... omitted ... gl_Position = projectionMatrix * p; } 2) ... same as above ... p = projectionMatrix * p; gl_Position = p / p.w; I think the two are supposed to generate the same results, but it seems it's not the case. 1 doesn't work while 2 is working as expected.. Could it possibly be a precision problem? Am I missing something? This is driving me almost crazy.. helps needed. Many thanks in advance!

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