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• android.app.Application subclass, onTerminate is not being called

  - by synic

  From the documentation for android.app.Application: "Base class for those who need to maintain global application state" I am using my own subclass to maintain an object that I'm using to query a server. Also from the documentation: "onTerminate() Called when the application is stopping." However, onTerminate() in my class is never called. I press the back button while viewing my main activity, and everything seems to shut down. My main Activity's onDestroy() method is called and isFinishing() returns true, but my android.app.Application's onTerminate() method is never called. Why is this? What am I missing? Is there something that is keeping it open?

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• Unable to load libsctp.so for non root user

  - by sankoz

  I have a Linux application that uses the libsctp.so library. When I run it as root, it runs fine. But when I run it as an ordinary user, it gives the following error: error while loading shared libraries: libsctp.so.1: cannot open shared object file: No such file or directory But, when I do ldd as ordinary user, it is able to see the library: [sanjeev@devtest6 src]$ ldd myapp ... ... libsctp.so.1 => /usr/local/lib/libsctp.so.1 (0x00d17000) [sanjeev@devtest6 src]$ ls -lL /usr/local/lib/libsctp.so.1 -rwxrwxrwx 1 root root 27430 2009-06-29 11:26 /usr/local/lib/libsctp.so.1 [sanjeev@devtest6 src]$ What could be wrong? How is the ldd is able to find libsctp.so, but when actually running the app, it is not able to find the same library?

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• How to check a print job status with C#

  - by Saab

  I'm printing a PDF file by executing a commandline application from within my C# application. Now I wanna know when this job is printed. I was hoping there would be some kind of event I could subscribe to, and handle it. But I couldn't find it. So now I'm resorting to polling. And checking the JobStatus of a PrinterSystemJobInfo object. But in my case this either gives me JobStatus = None or JobStatus = Printing. PrinterSystemJobInfo.JobStatus Can someone tell me how to reliably check a print job status using C#?

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• Dynamically evaluating simple boolean logic in Python

  - by a paid nerd

  I've got some dynamically-generated boolean logic expressions, like: (A or B) and (C or D) A or (A and B) A empty - evaluates to True The placeholders get replaced with booleans. Should I, Convert this information to a Python expression like True or (True or False) and eval it? Create a binary tree where a node is either a bool or Conjunction/Disjunction object and recursively evaluate it? Convert it into nested S-expressions and use a Lisp parser? Something else? Suggestions welcome.

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• How do I track down the source of a KVC exception: this class is not key value coding-compliant for

  - by sam

  I get this error when I try to run my app: 2010-04-29 13:49:01.355 MyApp[56123:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<MyViewController 0x5112b10> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key toolbar.' MyViewController used to have an IBOutlet called 'toolbar' that connected to a UIToolbar object in a nib. I decided I no longer needed the toolbar or the nib so I removed them from the project. But Xcode seems to still want to refer to 'toolbar'. Where might the reference to toolbar be if I no longer use a nib? I can synthesize a dummy 'toolbar' property to appease Xcode, but I want to avoid this kind of ugly hack.

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• Retrieving "invalid" value from a NumericUpDown Validating event

  - by alhazen

  When the user enters a value above numericUpDown.Maximum, the control's value is automatically set to the maximum. I'd like to display a MessageBox when this occurs, but I'm not able to do that because control.Value and control.Text already contain the automatically set value, maximum, when Validating event is raised. private void numericUpDown_Validating(object sender, System.ComponentModel.CancelEventArgs e) { NumericUpDown control = sender as NumericUpDown; decimal newValue = control.Value; // decimal newValue; // decimal.TryParse(control.Text, out newValue) if (newValue > control.Maximum || newValue < control.Minimum) { // MessageBox } } Thanks

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• How do I set the jax-ws client request timeout programatically on jboss?

  - by Jonas Andersson

  I am trying to set the request (and connection) timeout for a jax-ws-webservice-client generated with the jaxws-maven-plugin. When running my app under tomcat or jetty the timeout works, but when deployed under jboss it doesn't "take". private void setRequestAndConnectionTimeout(Object wsPort) { String REQUEST_TIMEOUT = BindingProviderProperties.REQUEST_TIMEOUT; // "com.sun.xml.ws.request.timeout"; ((BindingProvider) wsPort).getRequestContext().put(REQUEST_TIMEOUT, timeoutInMillisecs); ((BindingProvider) wsPort).getRequestContext().put(JAXWSProperties.CONNECT_TIMEOUT, timeoutInMillisecs); } What is the correct way to do this for JBoss?

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• mouse wheel scrolling work with f5 in app but don't work on web

  - by lina

  Good day! I have a web application on Silverlight 3. on ManePage I have a <ScrollViewer x:Name="sV" MouseWheel="sV_MouseWheel" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto"> with such code: private void sV_MouseWheel(object sender, MouseWheelEventArgs e) { var offset = sV.VerticalOffset; sV.ScrollToVerticalOffset(offset + (e.Delta * -0.5)); } When I press F5 button to debug my application, mouse wheel scrolling works well, but when I press F6 and then choose Web.Project prperty Debug-Start New Instance or publish my project on site, mouse wheel scrolling doesn't work :( what can I do?

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• Superfluous python parameters

  - by Leif Andersen

  I've noticed a discrepancy in the way that python parameters are called. In every other language I've dealt with, you either have foo() meaning either no parameters, or as many parameters as you like, or foo(arg1, arg2,...,argn) where you pass in the same number of parameters to define the function and call it. In python however, I've noticed that the function definitions, and when the function is called, can have two different parameters sets, this usually consists of: class foo(object): def bar(self, arg1, arg2): pass However, when I want to call the function, all I have to do is: zoo = foo() zoo.bar(arg1, arg2) Where did the self parameter go? Thank you.

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• Using DockPanel Suite's XML saving with My.Settings

  - by Cyclone

  In vb.net, how can I use SaveAsXML and LoadFromXML (DockPanel Suite functions) with My.Settings? I know there is a way to save it to a stream, but I don't know enough about System.IO to do this. DockPanel Suite: http://sourceforge.net/projects/dockpanelsuite/ I would very much prefer to store configuration using My.Settings instead of as an XML file. Thanks for the help! EDIT: Since the only person to answer so far has since deleted their answer, I feel I should explain further: Those two methods can both accept a stream object, but I have not used System.IO enough to know how to properly initialize a stream, let alone get a string out of a stream. EDIT: Googling has gotten me nowhere. EDIT: Still waiting for this. I've tried everything...

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• Differentiating Between UITouch Objects On The iPhone

  - by Jasarien

  Hey guys, I'm trying to differentiate between two (or more) UITouch objects on the iPhone. Specifically, I'd like to know the order in which the touches occurred. For instance, in my -touchesBegan:withEvent: method I get an NSSet of UITouch objects. Now I can find out how many touches there are, but, which object represents which finger? I notice the timestamp property on UITouch - is this what I'm looking for? I see how that would be useful to obtaining the last or first touch - providing the touches don't mutate... Therein lies my problem. I can use the timestamp to single out the latest touch, but then the touch that occurred first moves, and IT becomes the latest touch... At the end of this exercise, I'd like to be able to implement the "pinch" gesture to zoom in or out, etc. Any help would be greatly appreciated, thanks.

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• Select TOP 5 * from SomeTable, using Dataview.RowFilter ?

  - by eugeneK

  I need to select 5 most recent rows from cached Dataview object, is there any way to do that? I've tried but Indexer DataColumn is empty. : public static DataView getLatestFourActive() { DataTable productDataTable = getAll().ToTable(); DataColumn ExpressionColumn = new DataColumn("Indexer",typeof(System.Int32)); ExpressionColumn.Unique = true; ExpressionColumn.AutoIncrement = true; ExpressionColumn.AllowDBNull = false; ExpressionColumn.AutoIncrementSeed = 0; ExpressionColumn.AutoIncrementStep = 1; productDataTable.Columns.Add(ExpressionColumn); DataView productFilteredView = productDataTable.DefaultView; productFilteredView.RowFilter = "isActive=1 and Indexer<4"; return productFilteredView; } getAll() returns cached DataView thanks

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• Asp.net Response.Redirect Error

  - by andrewWinn

  My team and I are working on a portal applicaiton. When a user requests a page, we get a page object (contianing permissions, actual file to use and what not). We then do a Response.Redirect to "~/Default.aspx". The crazy thing is that when the code to validate access and what not is called from a button click event from within an ajax update panel, response.redirect is pasting a "&f2" or a "/" into the url. So rather than http://localhost/Default.aspx, the webbrowser is being redirected to http://localhost/%f2Default.aspx, and is subsequently returning a 404 error. HttpContext.Current.Response.Redirect("~/Default.aspx", false); Anyone have an idea of why this would occur? And it only happens when the click event fires inside an update panel.

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• Actual note duration from MIDI duration

  - by Anthony Labarre

  I'm currently implementing an application to perform some tasks on MIDI files, and my current problem is to output the notes I've read to a LilyPond file. I've merged note_on and note_off events to single notes object with absolute start and absolute duration, but I don't really see how to convert that duration to actual music notation. I've guessed that a duration of 376 is a quarter note in the file I'm reading because I know the song, and obviously 188 is an eighth note, but this certainly does not generalise to all MIDI files. Any ideas?

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• Facebook Connect - logout issue

  - by Gublooo

  Hello I think I'm missing a very silly detail but the logout funtion of facebook connect is not working for me. I followed the steps posted in this answer by Typeoneerror but I cant get it to work. This is my logout javascript function function logout() { FB.init("API_KEY", "/xd_receiver.htm"); FB.Connect.logoutAndRedirect("/logout/url"); } When I click on it - nothing happens - In the browser status bar - For a second I see a message which says waiting for facebook - but I continue to stay on the same page. It does not redirect me nor does it log me out of facebook either. Just to see if the function is being called - I removed FB.init call from the function and then I get the error Error Message: 'FB.Connect' is null or not an object Any suggestions on how to debug this. Thanks a lot

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• Add WhereParameters to LinqDataSource in Selecting event

  - by Steven

  I have a repeater using a LinqDataSource as a data source. When a query string is entered, I'd like to filter the results, but ONLY when a query string is entered. If there is no query string, the results should not be filtered, all results should be returned. I'm trying to add a WhereParameter to my LinqDataSource in the Selecting event of the LinqDataSource, but it's not working. Here's my code: protected void ldsImages_Selecting(object sender, LinqDataSourceSelectEventArgs e) { if (Request.QueryString["id"] != null) { e.WhereParameters.Add("ImageTypeID", Request.QueryString["id"]); } }

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• C# WPF application is using too much memory while GC.GetTotalMemory() is low

  - by Dmitry

  I wrote little WPF application with 2 threads - main thread is GUI thread and another thread is worker. App has one WPF form with some controls. There is a button, allowing to select directory. After selecting directory, application scans for .jpg files in that directory and checks if their thumbnails are in hashtable. if they are, it does nothing. else it's adding their full filenames to queue for worker. Worker is taking filenames from this queue, loading JPEG images (using WPF's JpegBitmapDecoder and BitmapFrame), making thumbnails of them (using WPF's TransformedBitmap) and adding them to hashtable. Everything works fine, except memory consumption by this application when making thumbnails for big images (like 5000x5000 pixels). I've added textboxes on my form to show memory consumption (GC.GetTotalMemory() and Process.GetCurrentProcess().PrivateMemorySize64) and was very surprised, cuz GC.GetTotalMemory() stays close to 1-2 Mbytes, while private memory size constantly grows, especially when loading new image (~ +100Mb per image). Even after loading all images, making thumbnails of them and freeing original images, private memory size stays at ~700-800Mbytes. My VirtualBox is limited to 512Mb of physical memory and Windows in VirtualBox starts to swap alot to handle this huge memory consumption. I guess I'm doing something wrong, but I don't know how to investigate this problem, cuz according to GC, allocated memory size is very low. Attaching code of thumbnail loader class: class ThumbnailLoader { Hashtable thumbnails; Queue<string> taskqueue; EventWaitHandle wh; Thread[] workers; bool stop; object locker; int width, height, processed, added; public ThumbnailLoader() { int workercount,i; wh = new AutoResetEvent(false); thumbnails = new Hashtable(); taskqueue = new Queue<string>(); stop = false; locker = new object(); width = height = 64; processed = added = 0; workercount = Environment.ProcessorCount; workers=new Thread[workercount]; for (i = 0; i < workercount; i++) { workers[i] = new Thread(Worker); workers[i].IsBackground = true; workers[i].Priority = ThreadPriority.Highest; workers[i].Start(); } } public void SetThumbnailSize(int twidth, int theight) { width = twidth; height = theight; if (thumbnails.Count!=0) AddTask("#resethash"); } public void GetProgress(out int Added, out int Processed) { Added = added; Processed = processed; } private void AddTask(string filename) { lock(locker) { taskqueue.Enqueue(filename); wh.Set(); added++; } } private string NextTask() { lock(locker) { if (taskqueue.Count == 0) return null; else { processed++; return taskqueue.Dequeue(); } } } public static string FileNameToHash(string s) { return FormsAuthentication.HashPasswordForStoringInConfigFile(s, "MD5"); } public bool GetThumbnail(string filename,out BitmapFrame thumbnail) { string hash; hash = FileNameToHash(filename); if (thumbnails.ContainsKey(hash)) { thumbnail=(BitmapFrame)thumbnails[hash]; return true; } AddTask(filename); thumbnail = null; return false; } private BitmapFrame LoadThumbnail(string filename) { FileStream fs; JpegBitmapDecoder bd; BitmapFrame oldbf, bf; TransformedBitmap tb; double scale, dx, dy; fs = new FileStream(filename, FileMode.Open); bd = new JpegBitmapDecoder(fs, BitmapCreateOptions.None, BitmapCacheOption.OnLoad); oldbf = bd.Frames[0]; dx = (double)oldbf.Width / width; dy = (double)oldbf.Height / height; if (dx > dy) scale = 1 / dx; else scale = 1 / dy; tb = new TransformedBitmap(oldbf, new ScaleTransform(scale, scale)); bf = BitmapFrame.Create(tb); fs.Close(); oldbf = null; bd = null; GC.Collect(); return bf; } public void Dispose() { lock(locker) { stop = true; } AddTask(null); foreach (Thread worker in workers) { worker.Join(); } wh.Close(); } private void Worker() { string curtask,hash; while (!stop) { curtask = NextTask(); if (curtask == null) wh.WaitOne(); else { if (curtask == "#resethash") thumbnails.Clear(); else { hash = FileNameToHash(curtask); try { thumbnails[hash] = LoadThumbnail(curtask); } catch { thumbnails[hash] = null; } } } } } }

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• onload Event in embedded SVG not calling function in attached script. Scope Issue?

  - by Nick

  Hi So I've got an XHTML page with a script - not inline > <script type="text/javascript" > src="../global/js/scripts.js"></script> and an embedded (I tried embed and object, same behavior) SVG document with a onload="CheckIfLoaded(evt)" attribute. The problem is firefox doesn't call the CheckIfLoaded() function in scripts.js. Firebug gives me "CheckIfLoaded() is not defined" with no reference to any line numbers. I can't find any information regarding the scope of javascript functions with respect to embedded content. Curiously, it works fine in IE. I could of course add a reference to the script into the SVG file as well but I believe that will result in the client downloading the scripts file twice and in addition I have 1000+ svg files and I'd really rather not add one line to all of them, although I suppose I could write a batch file or whatever if I have to. Any one know more about this? Thanks, Nick

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• How can I set up .NET UnhandledException handling in a Windows service?

  - by Mike Pateras

  protected override void OnStart(string[] args) { AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException); Thread.Sleep(10000); throw new Exception(); } void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) { } I attached a debugger to the above code in my windows service, setting a breakpoint in CurrentDomain_UnhandledException, but it was never hit. The exception pops up saying that it is unhandled, and then the service stops. I even tried putting some code in the event handler, in case it was getting optimized away. Is this not the proper way to set up unhandled exception handling in a windows service?

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• mvc presentation model best-practices

  - by Andrew Florko

  Hello, everybody How do you usually convert business objects to presentation? For example: Business object Person { Id, FirstName, LastName, Patronymic ... } should be presented as "LastName F. P. " in html layout. We use Presentation classes hierarchy to represent data ready for output from Business model. Questions: Will you keep presentation model completely separated from Business Model. For example, can strong-typed views (MVC ASP.NET) aggregate formatted business data as well as raw business objects (that leads toward <%=Html.Encode(PersonHelper.ToShort(Model.Person))% html layout injections) What architecture layer do you choose for conversion (mvc controllers that formats business data from business layer, for instance). Thank you in advance

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• Ruby for Rails: underfined method 'name ' for #<Array:0xb6c971cc>

  - by erwin

  Hi, I want to display the column 'name' after being found from the table mytest. In the mytest.rb, I defined "attrib_accessor :name"; In the procedure index under directory /controller/mytest_controller.rb, def index .....###[Ignore some code] @[email protected]_by_id ### I am able to verify the tuples in @mytesttbl end In the /view/mytest/index.rhtml, I have code like "mytesttbl", :object = @mytesttbl)% In the /view/mytest/_mytesttbl.html.erb. I have code like <%=mytesttbl.name % when I ran the above code, I have error on _mytesttbl.html.erb, underfined method 'name ' for # Please help. Thanks,

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• ASP.NET MVC 2 RC2 Model Binding with NVARCHAR NOT NULL column

  - by Gary McGill

  I have a database column defined as NVARCHAR(1000) NOT NULL DEFAULT(N'') - in other words, a non-nullable text column with a default value of blank. I have a model class generated by the Linq-to-SQL Classes designer, which correctly identifies the property as not nullable. I have a TextAreaFor in my view for that property. I'm using UpdateModel in my controller to fetch the value from the form and populate the model object. If I view the web page and leave the text area blank, UpdateModel insists on setting the property to NULL instead of empty string. (Even if I set the value to blank in code prior to calling UpdateModel, it still overwrites that with NULL). Which, of course, causes the subsequent database update to fail. I could check all such properties for NULL after calling UpdateModel, but that seems ridiculous - surely there must be a better way? Please don't tell me I need a custom model binder for such a simple scenario...!

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• Using COM to open Word

  - by chupinette

  Hello! I am actually trying some codes i found from http://php.net/manual/en/class.com.php <?php // starting word $word = new COM("word.application") or die("Unable to instantiate Word"); echo "Loaded Word, version {$word->Version}\n"; //bring it to front $word->Visible = 1; //open an empty document $word->Documents->Add(); //do some weird stuff $word->Selection->TypeText("This is a test..."); $word->Documents[1]->SaveAs("Useless test.doc"); //closing word $word->Quit(); //free the object $word = null; ?> But this does not seem to work. I am using Word 2007 and i get the following: Loaded Word, version 12.0 Fatal error: Call to undefined method variant::SaveAs() in C:\xampp\htdocs\final\testq.php on line 14 Can anyone solve this problem? Is it because i am using Word 2007?

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• Can dummy objects be simulated on iphone?

  - by Mike

  I come from 3D animation and one of the basic things all 3D software have is the ability to create dummy objects. Dummy objects can be used to groups objects that can be rotated, moved or scaled together around a specific anchor point. This is the idea of what I am asking. Obviously we can have fake dummies by using a view and put other views as subviews, but this has problems as the view receives clicks and sometimes you don't want it to do so. You cannot change the anchorpoint of a view too. So, the dummies as I ask have, at least, these properties: adjustable anchor point it is not clickable it is totally invisible (cannot be rendered). any scale, rotation and translation of a dummy are propagated to the grouped objects considering the dummy's anchor point. it is totally animatable. Can this be simulated on iPhone? Is there any object that can be created to simulate this? thanks.

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• RadControl DateTimePicker Selecting new time doesn't remove highlight from previous selection

  - by Jason Beck

  This is not browser specific - the behavior exists in Firefox and IE. The RadControl is being used within a User Control in a SiteFinity site. Very little customization has been done to the control. <telerik:RadDateTimePicker ID="RadDateTimePicker1" runat="server" MinDate="2010/1/1" Width="250px"> <ClientEvents></ClientEvents> <TimeView starttime="08:00:00" endtime="20:00:00" interval="02:00:00"></TimeView> <DateInput runat="server" ID="DateInput"></DateInput> </telerik:RadDateTimePicker> protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { RadDateTimePicker1.MinDate = DateTime.Now; } }

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