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  • .NET remoting exception: Exception in the Socket#33711845::DoBind - Only one usage of each socket ad

    - by wollemi
    Hi All, I'm attempting to setup a simple remoting windows service and getting the following error when starting the service: "System.Net.Sockets Error: 0 : [4180] Exception in the Socket#33711845::DoBind - Only one usage of each socket address (protocol/network address/port) is normally permitted System.Net.Sockets Verbose: 0 : [4180] ExclusiveTcpListener#4032828::Start() System.Net.Sockets Verbose: 0 : [4180] Socket#33711845::Bind(0:9998#9998) System.Net.Sockets Error: 0 : [4180] Exception in the Socket#33711845::DoBind - Only one usage of each socket address (protocol/network address/port) is normally permitted ". In the windows service application I have the following code in the "OnStart" method - the error occurs when registering the Channel - ChannelServices.RegisterChannel(tcpPipe, true); As far as I can tell there are no other processes using port 9998 ... Your help to resolve this is most appreciated! protected override void OnStart(string[] args) { int portNumber = int.Parse(ConfigurationManager.AppSettings["endPointTCPPort"]); TcpChannel tcpPipe = new TcpChannel(portNumber); ChannelServices.RegisterChannel(tcpPipe, true); Type serviceType = Type.GetType("TractionGatewayService.TractionGateway"); try { RemotingConfiguration.RegisterWellKnownServiceType(serviceType, "updateCustomerDetails", WellKnownObjectMode.SingleCall); } catch (RemotingException e) { EventLog.WriteEntry("unable to establish listening port because " + e.message; ChannelServices.UnregisterChannel(tcpPipe); } w

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  • Exporting makefile from Eclipse CDT

    - by Alex Farber
    I have C++ project in the Ubuntu OS, Eclipse CDT. My final goal is to build the project binaries for FreeBSD OS. The first test. I create simple C++ CDT project with main.cpp file: cout << "OK" << endl; and build it. Then I open Terminal window in Release directory: alex@alex-linux:~/workspace/HelloWorld/Release$ ls HelloWorld main.d main.o makefile objects.mk sources.mk subdir.mk alex@alex-linux:~/workspace/HelloWorld/Release$ rm HelloWorld main.d main.o alex@alex-linux:~/workspace/HelloWorld/Release$ ls makefile objects.mk sources.mk subdir.mk alex@alex-linux:~/workspace/HelloWorld/Release$ make Building file: ../main.cpp Invoking: GCC C++ Compiler g++ -O3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.cpp" Finished building: ../main.cpp Building target: HelloWorld Invoking: GCC C++ Linker g++ -o"HelloWorld" ./main.o Finished building target: HelloWorld alex@alex-linux:~/workspace/HelloWorld/Release$ ./HelloWorld OK alex@alex-linux:~/workspace/HelloWorld/Release$ So far, so good. Now I copy the whole project tree to FreeBSD and trying to build it: $ cd /home/alex/project $ ls main.cpp release $ cd release $ ls makefile objects.mk sources.mk subdir.mk $ make "makefile", line 5: Need an operator "makefile", line 10: Need an operator "makefile", line 11: Need an operator "makefile", line 12: Need an operator CDT-generated makefile doesn't work. This is makefile beginning: $ Automatically-generated file. Do not edit! -include ../makefile.init RM := rm -rf $ All of the sources participating in the build are defined here -include sources.mk -include subdir.mk -include objects.mk ... Line 5 is -include ../makefile.init. Really, there is no such file. But it works by some way on Ubuntu computer. What is the trick, how can I build this? BTW, manually written makefile works: all: g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.cpp" g++ -o"HelloWorld" ./main.o Note: $ in makefile is actually #, I replaced it because # creates formatting problems inside of stackoverflow pre block.

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  • Managing Dependency Hell with WiX and C#

    - by Tom the Junglist
    We are on the eve of product launch, and at the last minute I am being bombarded with crash reports that appear to be related to our installer, which is a WiX3 project with separate outputs for x86 and x64 builds. These have been an ongoing problem that I always thought were fixed, only to find out that they were still lurking. The product itself is a collection of binaries that communicate with each other via .Net remoting, including a Windows Service and a small COM component that is loaded as an addon in another app. The service runs as SYSTEM, the COM piece runs in a low-rights context, while the other pieces run in normal user contexts. Other pieces include an third-party COM object library DLL and a shared DLL with the .net Remoting interfaces. I've observed flat-out weird behavior with MSI, particularly on version upgrades. Between MS' anal strong-name implementation (specifically, the exact version check before loading a given assembly), a documented WiX/MSI bug that sees critical files erased on upgrades (essentially, if a file in the upgrade MSI has the same version number as the existing install, that file is deleted), and having to work around Wow64 virtualization (x86 MSI can only write to registry/HD locations via Wow64, yet x64 MSIs cannot run on x86 computers...), I am about ready to trash the whole thing and port it over to a different install system. What I am looking for on tips + tricks, techniques, or suggestions on how to properly do things so that I am not fighting with Windows Installer's twisted sense of logic. I am tired of fighting with WiX/MSI/Windows Installer. All it needs to do is place files and registry keys where I tell it to, upgrade them when appropriate, and don't delete anything until the user uninstalls. Instead, dependencies are deleted willy-nilly, bringing up a whole bunch of uncatchable exceptions (can't wrap a try{} block around function declarations) and GPF'ing the whole app. I am particularly interested in 'best practices' and examples regarding shared and dependency DLLs, and any tips on making sure if a file needs to go to GAC, that it actually goes to the GAC and stays there until it is appropriate to remove it. Thanks! Tom

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  • How to remove FacesMessages from the FacesContext?

    - by gurupriyan.e
    In my screen, I have a drop down(select box), on selection of any of the options in that drop down , i display one or more text boxes beside the select box using javascript/css - display:none and display:block. All these input controls are in the same jsf form. Each of the input controls have their own validator. The problem is suppose the user selects from selection box and doesn't input value or inputs a wrong value for , i add a custom FacesMessage in the Validator and is shown appropriately and suppose the user selects the the second time and inputs the wrong value for the then another FacesMessage is added in the validator. But Now both the Messages are shown - means - the message for and - which is wrong My assumption is that , this happens because they exist in the same form and their instances are not destroyed yet in the FacesContext and in the UIView. I decided to delete the messages this way Iterator<FacesMessage> msgIterator = FacesContext.getCurrentInstance().getMessages(); while(msgIterator.hasNext()) { msgIterator.next(); msgIterator.remove(); } But this sometimes gives java.util.NoSuchElementException org.apache.myfaces.shared_impl.renderkit.html.HtmlMessagesRendererBase$MessagesIterator.next So 2 questions : 1) What is the problem in deleting the FacesMessages this way? I am using myfaces-api-1.2.3.jar and myfaces-impl-1.2.3.jar 2) Is there a better approach to handle my scenario? I only want to show relevent messages every time a jsf request is processed Thanks

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  • JSF 2.0 AJAX: jsf.ajax.request to call method not only rerender an area of page

    - by gerry
    Hi, I'm looking for a soultion of the following problem: _The is a list of links with different types of cars. _The user can click on each car in the list and a ajax request should be sent. _The response of the ajax request should be dependent on the id (of each car) and displayed in an panelGroup. So what I need is a possibility to call a method on the backing-bean. Additionally, this method should be called with a car id as its parameter. My code so far looks like: ... <ul> <ui:repeat value="#{carTree.getCars)}" var="car"> <h:outputScript name="jsf.js" library="javax.faces" target="head" /> <li onclick="showDetails(#{car.id});">#{car.name}</li> </ui:repeat> </ul> ... <h:panelGroup id="carDetails" layout="block" style="float:left;"> // need the details of each 'selected /clicked' car here </h:panelGroup> ... And the method in the backing bean should look like: public class CarTree { ... public String getCarDetails(int carid){ return "The car details for the car id "+carid+" are......"; } ... } I've no idea how to call a method by using the new JSF 2.0 AJAX functionality. Please, help me...

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  • Mimicking the UltraGridColumnChooser's drag & drop ability

    - by Sören Kuklau
    (Infragistics 2008 Vol. 3, CLR 2.0) Infragistics's UltraGrid comes with a column chooser user control, which is simply a vertical arrangement of columns with checkboxes that toggle a column's hidden state. In addition, it allows you to pick a column and drag it directly to the grid so you don't have to manually position it afterwards. (This is particularly handy when you already have a lot of visible columns and have no clue where the new one ended up.) I'm building my own column chooser based on an UltraTree. Getting the checkboxes to behave the same wasn't an issue, but I haven't found a way to drag a column from the tree to the grid and have it accept it. In my tree, each UltraTreeNode has a Tag with the following struct: Private Structure DraggableGridColumn Public NodeKey As String Public NodeName As String Public ParentKey As String Public Column As UltraGridColumn End Structure I then have an event as follows: Private Sub columnsTree_SelectionDragStart(ByVal sender As Object, ByVal e As System.EventArgs) Handles columnsTree.SelectionDragStart If columnsTree.SelectedNodes.Count <> 1 Then Return End If If Not TypeOf columnsTree.SelectedNodes(0).Tag Is DraggableGridColumn Then Return End If Dim column As UltraGridColumn = CType(columnsTree.SelectedNodes(0).Tag, DraggableGridColumn).Column columnsTree.DoDragDrop(column, DragDropEffects.All) End Sub In the DoDragDrop call, neither column (of type UltraGridColumn) nor column.Header (of type ColumnHeader) get accepted by the grid. I assume I'm sending the wrong type, and/or that the grid expects a special struct with some additional information. Unfortunately, I've also failed to catch an event (both on the column chooser side as well as on the grid side) where Infragistics's normal column chooser does this properly; the normal drag & drop events never seem to fire.

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  • Is this a good implementation of DefaultHttpClient and ThreadSafeClientConnManager in Android?

    - by johnrock
    In my Android app I am sharing one httpclient for all activities/threads. All requests are made by callling getHttpClient().execute(httpget) or getHttpClient().execute(httppost). Is this implementation complete/correct and safe for multiple threads? Is there anything else missing i.e. Do I have to worry about releasing connections at all? private static HttpClient httpclient ; public static HttpClient getHttpClient() { if(httpclient == null){ return getHttpClientNew(); } else{ return httpclient; } } public static synchronized HttpClient getHttpClientNew() { HttpParams params = new BasicHttpParams(); ConnManagerParams.setMaxTotalConnections(params, 100); HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); HttpProtocolParams.setContentCharset(params, "UTF_8"); HttpProtocolParams.setUseExpectContinue(params, false); HttpConnectionParams.setConnectionTimeout(params, 10000); HttpConnectionParams.setSoTimeout(params, 10000); SchemeRegistry schemeRegistry = new SchemeRegistry(); schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); ClientConnectionManager cm = new ThreadSafeClientConnManager(params, schemeRegistry); httpclient = new DefaultHttpClient(cm, params); return httpclient; } This is an example of how the httpclient is used: private void update() { HttpGet httpget = new HttpGet(URL); httpget.setHeader(USER_AGENT, userAgent); httpget.setHeader(CONTENT_TYPE, MGUtils.APP_XML); HttpResponse response; try { response = getHttpClient().execute(httpget); HttpEntity entity = response.getEntity(); if (entity != null) { // parse stuff } } catch (Exception e) { } }

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  • How to delete row in TTTableViewController (Three20)

    - by Dmitry
    Hi, The Three20 is great library. It's making the work with tables very easy. But one gap that I noticed - is deletion of rows, with animation. I spent many hours trying to do this, and this is what I'm doing: // get current index patch UITableView* table = [super tableView]; NSIndexPath *indexPath = [table indexPathForSelectedRow]; //delete row in data source TTListDataSource * source = (TTListDataSource *)self.dataSource; [source.items removeObjectAtIndex:indexPath.row]; // delete row from the table, with animation [table deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; After this code runs the error appears: [NSCFArray objectAtIndex:]: index (0) beyond bounds (0) I'm using the class inherited from the TTTableViewController. And I doesn't implement the DataSourceDelegate or TableViewDelegate because I'm using the Three20 as much as possible. So, this is how I create datasource: for(NSDictionary *album in (NSArray *)albums){ TTTableRightImageItem *item = [TTTableRightImageItem itemWithText:@"name" imageURL:@"image url" defaultImage:nil imageStyle:TTSTYLE(rounded) URL:@"url of selector where I actually catch the tap on a row"]; [tableItems addObject:item]; } self.dataSource = [TTListDataSource dataSourceWithItems:tableItems]; I read this article (article) but it doesn't help :( So, I know that this is very simple for gurus from this site. Can you just give me advanced sample of how to do this Thanks

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  • Greyscale Image from YUV420p data

    - by fergs
    From what I have read on the internet the Y value is the luminance value and can be used to create a grey scale image. The following link: http://www.bobpowell.net/grayscale.htm, has some C# code on working out the luminance of a bitmap image : { Bitmap bm = new Bitmap(source.Width,source.Height); for(int y=0;y<bm.Height;y++) public Bitmap ConvertToGrayscale(Bitmap source) { for(int x=0;x<bm.Width;x++) { Color c=source.GetPixel(x,y); int luma = (int)(c.R*0.3 + c.G*0.59+ c.B*0.11); bm.SetPixel(x,y,Color.FromArgb(luma,luma,luma)); } } return bm; } I have a method that returns the YUV values and have the Y data in a byte array. I have the current piece of code and it is failing on Marshal.Copy – attempted to read or write protected memory. public Bitmap ConvertToGrayscale2(byte[] yuvData, int width, int height) { Bitmap bmp; IntPtr blue = IntPtr.Zero; int inputOffSet = 0; long[] pixels = new long[width * height]; try { for (int y = 0; y < height; y++) { int outputOffSet = y * width; for (int x = 0; x < width; x++) { int grey = yuvData[inputOffSet + x] & 0xff; unchecked { pixels[outputOffSet + x] = UINT_Constant | (grey * INT_Constant); } } inputOffSet += width; } blue = Marshal.AllocCoTaskMem(pixels.Length); Marshal.Copy(pixels, 0, blue, pixels.Length); // fails here : Attempted to read or write protected memory bmp = new Bitmap(width, height, width, PixelFormat.Format24bppRgb, blue); } catch (Exception) { throw; } finally { if (blue != IntPtr.Zero) { Marshal.FreeHGlobal(blue); blue = IntPtr.Zero; } } return bmp; } Any help would be appreciated?

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  • Apache: VirtualHost *:80 -- mixing * ports and non-* ports with a NameVirtualHost address is not sup

    - by user248959
    Hi, when i add the line below to /etc/apache2/apache2.conf I get the error belower when i restart apache: Include /usr/share/doc/apache2.2-common/examples/apache2/extra/httpd-vhosts.conf [Mon Jun 14 12:16:47 2010] [error] VirtualHost *:80 -- mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results [Mon Jun 14 12:16:47 2010] [warn] NameVirtualHost *:80 has no VirtualHosts This is my httpd-vhosts.conf file: # # Use name-based virtual hosting. # NameVirtualHost *:80 # # VirtualHost example: # Almost any Apache directive may go into a VirtualHost container. # The first VirtualHost section is used for all requests that do not # match a ServerName or ServerAlias in any <VirtualHost> block. <VirtualHost *:80> ServerName tirengarfio.com DocumentRoot /var/www/rs3 <Directory /var/www/rs3> AllowOverride All Options MultiViews Indexes SymLinksIfOwnerMatch Allow from All </Directory> Alias /sf /var/www/rs3/lib/vendor/symfony/data/web/sf <Directory "/var/www/rs3/lib/vendor/symfony/data/web/sf"> AllowOverride All Allow from All </Directory> </VirtualHost> Any idea? Regards Javi

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  • How to use Tor control protocol in C#?

    - by Ed
    I'm trying to send commands to the Tor control port programmatically to make it refresh the chain. I haven't been able to find any examples in C#, and my solution's not working. The request times out. I have the service running, and I can see it listening on the control port. public string Refresh() { TcpClient client = new TcpClient("localhost", 9051); string response = string.Empty; string authenticate = MakeTcpRequest("AUTHENTICATE", client); if (authenticate.Equals("250")) response = MakeTcpRequest("SIGNAL NEWNYM", client); client.Close(); return response; } public string MakeTcpRequest(string message, TcpClient client) { client.ReceiveTimeout = 20000; client.SendTimeout = 20000; string proxyResponse = string.Empty; try { // Send message StreamWriter streamWriter = new StreamWriter(client.GetStream()); streamWriter.Write(message); streamWriter.Flush(); // Read response StreamReader streamReader = new StreamReader(client.GetStream()); proxyResponse = streamReader.ReadToEnd(); } catch (Exception ex) { // Ignore } return proxyResponse; } Can anyone spot what I'm doing wrong?

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  • Most useful free .NET libraries?

    - by Binoj Antony
    I have used a lot of free .NET libraries, some from Microsoft itself! Which ones have you found the most useful? Dependency Injection/Inversion of Control Unity Framework - Microsoft StructureMap - Jeremy Miller Castle Windsor NInject Spring Framework Autofac Managed Extensibility Framework Logging Logging Application Block - Microsoft Log4Net - Apache Error Logging Modules and Handlers(ELMAH) NLog Compression SharpZipLib DotNetZip YUI Compressor (CSS and JS compression/minification) AjaxMinifier (in other downloads) (JS compression. Also includes MSBuild task) Ajax Ajax Control Toolkit - Microsoft AJAXNet Pro Data Mapper XmlDataMapper AutoMapper ORM NHibernate Castle ActiveRecord Subsonic XmlDataMapper Charting/Graphics Microsoft Chart Controls for ASP.NET 3.5 SP1 Microsoft Chart Controls for Winforms ZedGraph Charting NPlot - Charting for ASP.NET and WinForms PDF Creators/Generators PDFsharp iTextSharp Unit Testing/Mocking NUnit Rhino Mocks Moq TypeMock.Net xUnit.net mbUnit Machine.Specifications Automated Web Testing Selenium Watin URL Rewriting url rewriter UrlRewriting.Net Url Rewriter and Reverse Proxy - Managed Fusion Controls Krypton - Free winform controls Source Grid - A Grid control Devexpress - free controls Unclassified CSLA Framework - Business Objects Framework AForge.net - AI, computer vision, genetic algorithms, machine learning Enterprise Library 4.1 - Logging, Exception Management, Validation, Policy Injection File helpers library C5 Collections - Collections for .NET Quartz.NET - Enterprise Job Scheduler for .NET Platform MiscUtil - Utilities by Jon Skeet Lucene.net - Text indexing and searching Json.NET - Linq over JSON Flee - expression evaluator PostSharp - AOP IKVM - brings the extensive world of Java libraries to .NET. Title of the question taken from here. [EDIT] Please provide links to these free libraries as well. Once we have a huge list of this, it can be arranged in categories! Please do not mention .NET Applications/EXEs here.

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  • Hidden Features of C#?

    - by Serhat Özgel
    This came to my mind after I learned the following from this question: where T : struct We, C# developers, all know the basics of C#. I mean declarations, conditionals, loops, operators, etc. Some of us even mastered the stuff like Generics, anonymous types, lambdas, linq, ... But what are the most hidden features or tricks of C# that even C# fans, addicts, experts barely know? Here are the revealed features so far: Keywords yield by Michael Stum var by Michael Stum using() statement by kokos readonly by kokos as by Mike Stone as / is by Ed Swangren as / is (improved) by Rocketpants default by deathofrats global:: by pzycoman using() blocks by AlexCuse volatile by Jakub Šturc extern alias by Jakub Šturc Attributes DefaultValueAttribute by Michael Stum ObsoleteAttribute by DannySmurf DebuggerDisplayAttribute by Stu DebuggerBrowsable and DebuggerStepThrough by bdukes ThreadStaticAttribute by marxidad FlagsAttribute by Martin Clarke ConditionalAttribute by AndrewBurns Syntax ?? operator by kokos number flaggings by Nick Berardi where T:new by Lars Mæhlum implicit generics by Keith one-parameter lambdas by Keith auto properties by Keith namespace aliases by Keith verbatim string literals with @ by Patrick enum values by lfoust @variablenames by marxidad event operators by marxidad format string brackets by Portman property accessor accessibility modifiers by xanadont ternary operator (?:) by JasonS checked and unchecked operators by Binoj Antony implicit and explicit operators by Flory Language Features Nullable types by Brad Barker Currying by Brian Leahy anonymous types by Keith __makeref __reftype __refvalue by Judah Himango object initializers by lomaxx format strings by David in Dakota Extension Methods by marxidad partial methods by Jon Erickson preprocessor directives by John Asbeck DEBUG pre-processor directive by Robert Durgin operator overloading by SefBkn type inferrence by chakrit boolean operators taken to next level by Rob Gough pass value-type variable as interface without boxing by Roman Boiko programmatically determine declared variable type by Roman Boiko Static Constructors by Chris Easier-on-the-eyes / condensed ORM-mapping using LINQ by roosteronacid Visual Studio Features select block of text in editor by Himadri snippets by DannySmurf Framework TransactionScope by KiwiBastard DependantTransaction by KiwiBastard Nullable<T> by IainMH Mutex by Diago System.IO.Path by ageektrapped WeakReference by Juan Manuel Methods and Properties String.IsNullOrEmpty() method by KiwiBastard List.ForEach() method by KiwiBastard BeginInvoke(), EndInvoke() methods by Will Dean Nullable<T>.HasValue and Nullable<T>.Value properties by Rismo GetValueOrDefault method by John Sheehan Tips & Tricks nice method for event handlers by Andreas H.R. Nilsson uppercase comparisons by John access anonymous types without reflection by dp a quick way to lazily instantiate collection properties by Will JavaScript-like anonymous inline-functions by roosteronacid Other netmodules by kokos LINQBridge by Duncan Smart Parallel Extensions by Joel Coehoorn

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  • How to get only one rounded corner with border-radius htc hack and MSIE v:roundrect?

    - by aarreoskari
    I have a problem with partially rounded corners. See the first working example for most browsers: .box { display: block; width: 100px; height: 100px; border: 1px solid black; background-color: yellow; -moz-border-radius-bottomright: 10px; -webkit-border-bottom-right-radius: 10px; } You can see that only bottom right corner should be rounded. Natural choice would be adding a border-radius.htc hack inside a conditional IE statement: .box { border-bottom-right-radius: 20px; behavior:url(border-radius.htc); } This is not working because border-radius.htc file is only accessing normal border-radius value (this.currentStyle['border-radius']). VML used by the hack is roundrect which only supports one percentage value for arcsize. So I was wondering if there is any other way around the problem by using some other VML elements? Another problem is that htc-file doesnt's support borders but that can be fixed with VML's stroked attribute. Nifty corners for example doesn't work well with corners at all.

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  • Sending email through proxy using gmail smtp

    - by baron
    Hello everyone, Trying to send some email in my C# app. I am behind a proxy - which is no doubt why the code isn't working. This is what I have so far: App.Config: <system.net> <defaultProxy enabled="false"> <proxy proxyaddress="xxx.xxx.xxx.xxx"/> </defaultProxy> <mailSettings> <smtp deliveryMethod="Network"> <network host="smtp.gmail.com" port="587"/> </smtp> </mailSettings> </system.net> Code: var username = "..."; var password = "..."; var fromEmail = "..."; var toEmail = "..."; var body = "Test email body"; var subject = "Test Subject Email"; var client = new SmtpClient("smtp.gmail.com", 587) { Credentials = new NetworkCredential(username, password), EnableSsl = true }; try { client.Send(fromEmail, toEmail, subject, body); } catch (Exception e) { MessageBox.Show(e.Message); } Everytime I get System.Net.WebException: The remote name could not be resolved: 'smtp.gmail.com' Where/how do I start to debug?

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  • resizing row's height in QTreeWidget/QTreeView

    - by serge
    Hi everyone, I have some problems with sizing row's height in QTreeWidget. I use QStyledItemDelegate with QPlainTextEdit. During editing text in QPlainTextEdit i check for changes with a help of: rect = self.blockBoundingRect(self.firstVisibleBlock()) and if text's height changes i resize editor size and need row in QTreeWidget also resizing. But i don't know how to inform TreeWidget or a Delegate about changes. I tried to initialize editor with index, that i could use in a future, but Delegate creates new editor every time and i failed to use signals. Also I used following function to catch resize event, but it' doesn't: bool QAbstractItemDelegate::editorEvent ( QEvent * event, QAbstractItemModel * model, const QStyleOptionViewItem & option, const QModelIndex & index ) How can i bound editor's size changes with TreeWidget? And one more thing, by default all items (cells) in TreeWidget have -1 or some big value as default width. I need whole text in cell to be visible, so how can i limit cells width only by visible range and make it expand in height? I want for it the same behavior as in instance a table in MSWord. Thank you in advance, Serge

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  • how to send image to remote server using webservices in android only save to byte array retrieve ima

    - by narasimha
    hi sir i am implemented this code public class ImageTest extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ImageView image = (ImageView) findViewById(R.id.picview); EditText value=(EditText)findViewById(R.id.EditText01); FileInputStream in; BufferedInputStream buf; try { in = new FileInputStream("/sdcard/pictures/1.jpg"); buf = new BufferedInputStream(in,1070); System.out.println("1.................."+buf); byte[] bMapArray= new byte[buf.available()]; buf.read(bMapArray); System.out.println("2................."+buf.read(bMapArray)); Bitmap bMap = BitmapFactory.decodeByteArray(bMapArray, 0, bMapArray.length); for (int i = 0; i < bMapArray.length; i++) { System.out.print(bMapArray[i]); } System.out.println("3......................"+bMap); System.out.println("4........bitmaparray"+bMap.extractAlpha()); System.out.println("5......................"+bMapArray); System.out.println("6......................"+ bMapArray.length); image.setImageBitmap(bMap); value.setText(bMapArray.length); if (in != null) { in.close(); } if (buf != null) { buf.close(); } } catch (Exception e) { Log.e("Error reading file", e.toString()); } } } 04-14 11:46:16.543: INFO/System.out(736): 2.................-1 3......................android.graphics.Bitmap@435a2d98 4........bitmaparrayandroid.graphics.Bitmap@435a3310 5......................[B@435a2758 6......................1035

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  • Code Golf: Code 39 Bar Code

    - by gwell
    The challenge The shortest code by character count to draw an ASCII representation of a Code 39 bar code. Wikipedia article about Code 39: http://en.wikipedia.org/wiki/Code_39 Input The input will be a string of legal characters for Code 39 bar codes. This means 43 characters are valid: 0-9 A-Z (space) and -.$/+%. The * character will not appear in the input as it is used as the start and stop characters. Output Each character encoded in Code 39 bar codes have nine elements, five bars and four spaces. Bars will be represented with # characters, and spaces will be represented with the space character. Three of the nine elements will be wide. The narrow elements will be one character wide, and the wide elements will be three characters wide. A inter-character space of a single space should be added between each character pattern. The pattern should be repeated so that the height of the bar code is eight characters high. The start/stop character * (bWbwBwBwb) would be represented like this: # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # # # ### ### # ^ ^ ^^ ^ ^ ^ ^^^ | | || | | | ||| narrow bar -+ | || | | | ||| wide space ---+ || | | | ||| narrow bar -----+| | | | ||| narrow space ------+ | | | ||| wide bar --------+ | | ||| narrow space ----------+ | ||| wide bar ------------+ ||| narrow space --------------+|| narrow bar ---------------+| inter-character space ----------------+ The start and stop character * will need to be output at the start and end of the bar code. No quiet space will need to be included before or after the bar code. No check digit will need to be calculated. Full ASCII Code39 encoding is not required, just the standard 43 characters. No text needs to be printed below the ASCII bar code representation to identify the output contents. The character # can be replaced with another character of higher density if wanted. Using the full block character U+2588, would allow the bar code to actually scan when printed. Test cases Input: ABC Output: # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # # # ### ### # ### # # # ### # ### # # ### ### ### # # # # # ### ### # Input: 1/3 Output: # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # # # ### ### # ### # # # ### # # # # # ### ### # # # # # ### ### # Input: - $ (minus space dollar) Output: # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # # # ### ### # # # # ### ### # ### # ### # # # # # # # # ### ### # Code count includes input/output (full program).

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  • XAML | When used XamlReader.Parse, not able to refer the items using the LogicalTreeHelper/VisualTre

    - by Roopesh
    Hi, I am setting the dynamic xaml (I am reading the xaml from the DB) for the content of a tab using the below statement. Tab.Content = XamlReader.Parse(xaml, ctx) After setting the content, if I try getting the children using the VisualTreeHelper, but I am not able to get. How ever I dont have this issue when I construct the xaml statically. Here is the code to reading the xaml. Dim XmlDocument = New XmlDataDocument() Dim IID As String = Nothing Dim xaml As String = Nothing Dim Tab As New TabItem Dim TempPanel As XmlNode = Nothing 'Tab.Height = 0 Try XmlDocument.Load(Directory.GetCurrentDirectory & "\Xml\AppFile.xml") pXmlDoc = XmlDocument xaml = XmlDocument.SelectSingleNode("//Grid").OuterXml Dim AsmName As String = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name Dim ctx As ParserContext = New ParserContext() ' New ParserContext() ctx.XamlTypeMapper = New XamlTypeMapper(New String() {AsmName}) ctx.XamlTypeMapper.AddMappingProcessingInstruction("src", "WpfToolkitDataGridTester", AsmName) ctx.XmlnsDictionary.Add("", "http://schemas.microsoft.com/winfx/2006/xaml/presentation") ctx.XmlnsDictionary.Add("x", "http://schemas.microsoft.com/winfx/2006/xaml") ctx.XmlnsDictionary.Add("src", "clr-namespace:WpfToolkitDataGridTester;assembly=" + AsmName) Tab.Name = "Tab" & Grid1Tab.Items.Count + 1 Tab.Header = "AppFile-1" Tab.BorderThickness = New Thickness(0) Tab.IsSelected = True Tab.Content = XamlReader.Parse(xaml, ctx) Grid1Tab.Items.Add(Tab) Return True Catch ex As Exception Throw End Try Here is the code to access the item after constructing the XAML. For i As Integer = 0 To VisualTreeHelper.GetChildrenCount(myVisual) - 1 Dim childVisual As Visual = CType(VisualTreeHelper.GetChild(myVisual, i), Visual) Select Case childVisual.DependencyObjectType.Name Case "ComboBox" AddHandler CType(childVisual, ComboBox).SelectionChanged, AddressOf ComboBox_SelectChanged Case "CheckBox" AddHandler CType(childVisual, CheckBox).Checked, AddressOf CheckBoxClicked AddHandler CType(childVisual, CheckBox).Unchecked, AddressOf CheckBoxClicked Case "RadioButton" AddHandler CType(childVisual, RadioButton).Checked, AddressOf CheckBoxClicked Case "TabControl" For Each item As System.Windows.Controls.TabItem In CType(childVisual, TabControl).Items EnumVisual(item.Content) Next End Select EnumVisual(childVisual) Next i any help is highly appreciated. Thanks,

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  • How to use Android's CacheManager?

    - by punnie
    I'm currently developing an Android application that fetches images using http requests. It would be quite swell if I could cache those images in order to improve to performance and bandwidth use. I came across the CacheManager class in the Android reference, but I don't really know how to use it, or what it really does. I already scoped through this example, but I need some help understanding it: /core/java/android/webkit/gears/ApacheHttpRequestAndroid.java Also, the reference states: "Network requests are provided to this component and if they can not be resolved by the cache, the HTTP headers are attached, as appropriate, to the request for revalidation of content." I'm not sure what this means or how it would work for me, since CacheManager's getCacheFile accepts only a String URL and a Map containing the headers. Not sure what the attachment mentioned means. An explanation or a simple code example would really do my day. Thanks! Update Here's what I have right now. I am clearly doing it wrong, just don't know where. public static Bitmap getRemoteImage(String imageUrl) { URL aURL = null; URLConnection conn = null; Bitmap bmp = null; CacheResult cache_result = CacheManager.getCacheFile(imageUrl, new HashMap()); if (cache_result == null) { try { aURL = new URL(imageUrl); conn = aURL.openConnection(); conn.connect(); InputStream is = conn.getInputStream(); cache_result = new CacheManager.CacheResult(); copyStream(is, cache_result.getOutputStream()); CacheManager.saveCacheFile(imageUrl, cache_result); } catch (Exception e) { return null; } } bmp = BitmapFactory.decodeStream(cache_result.getInputStream()); return bmp; }

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  • Diffence between FQL query and Graph API object access

    - by jwynveen
    What's the difference between accessing user data with the Facebook Graph API (http://graph.facebook.com/btaylor) and using the Graph API to make a FQL query of the same user (https://api.facebook.com/method/fql.query?query=QUERY). Also, does anyone know which of them the Facebook Developer Toolkit (for ASP.NET) uses? The reason I ask is because I'm trying to access the logged in user's birthday after they begin a Facebook Connect session on my site, but when I use the toolkit it doesn't return it. However, if I make a manual call to the Graph API for that user object, it does return it. It's possible I might have something wrong with my call from the toolkit. I think I may need to include the session key, but I'm not sure how to get it. Here's the code I'm using: _connectSession = new ConnectSession(APPLICATION_KEY, SECRET_KEY); try { if (!_connectSession.IsConnected()) { // Not authenticated, proceed as usual. statusResponse = "Please sign-in with Facebook."; } else { // Authenticated, create API instance _facebookAPI = new Api(_connectSession); // Load user user user = _facebookAPI.Users.GetInfo(); statusResponse = user.ToString(); ViewData["fb_user"] = user; } } catch (Exception ex) { //An error happened, so disconnect session _connectSession.Logout(); statusResponse = "Please sign-in with Facebook."; }

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  • How to convert an NSString to hex values

    - by einsteinx2
    I'd like to convert a regular NSString into an NSString with the (what I assume are) ASCII hex values and back. I need to produce the same output that the Java methods below do, but I can't seem to find a way to do it in Objective-C. I've found some examples in C and C++ but I've had a hard time working them into my code. Here are the Java methods I'm trying to reproduce: /** * Encodes the given string by using the hexadecimal representation of its UTF-8 bytes. * * @param s The string to encode. * @return The encoded string. */ public static String utf8HexEncode(String s) { if (s == null) { return null; } byte[] utf8; try { utf8 = s.getBytes(ENCODING_UTF8); } catch (UnsupportedEncodingException x) { throw new RuntimeException(x); } return String.valueOf(Hex.encodeHex(utf8)); } /** * Decodes the given string by using the hexadecimal representation of its UTF-8 bytes. * * @param s The string to decode. * @return The decoded string. * @throws Exception If an error occurs. */ public static String utf8HexDecode(String s) throws Exception { if (s == null) { return null; } return new String(Hex.decodeHex(s.toCharArray()), ENCODING_UTF8); }

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  • scale animation for wpf popup

    - by wpf
    I have a nice little popup, when it shows, I d'like it to growth from 0 to 1x scaley, but I don't get it right, when I click multiple times, it looks like i "catch" the animation at various states during the "growth". <Window.Triggers> <EventTrigger RoutedEvent="FrameworkElement.MouseRightButtonDown" > <EventTrigger.Actions> <BeginStoryboard> <Storyboard> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="SimplePopup" Storyboard.TargetProperty="(FrameworkElement.LayoutTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)"> <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/> <SplineDoubleKeyFrame KeyTime="00:00:00.3000000" Value="1"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger.Actions> </EventTrigger> </Window.Triggers> and the popup: <Popup Name="SimplePopup" AllowsTransparency="True" StaysOpen="False"> <Popup.LayoutTransform> <TransformGroup> <ScaleTransform ScaleX="1" ScaleY="1" /> <SkewTransform AngleX="0" AngleY="0" /> <RotateTransform Angle="0" /> <TranslateTransform X="0" Y="0" /> </TransformGroup> </Popup.LayoutTransform> <Border> some Content here </Border> </Popup>

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  • Add new item to UITableView and Core Data as data source?

    - by David.Chu.ca
    I have trouble to add new item to my table view with core data. Here is the brief logic in my codes. In my ViewController class, I have a button to trigle the edit mode: - (void) toggleEditing { UITableView *tv = (UITableView *)self.view; if (isEdit) // class level flag for editing { self.newEntity = [NSEntityDescription insertNewObjectForEntityName:@"entity1" inManagedObjectContext:managedObjectContext]; NSArray *insertIndexPaths = [NSArray arrayWithObjects: [NSInextPath indexPathForRow:0 inSection:0], nil]; // empty at beginning so hard code numbers here. [tv insertRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationFade]; [self.tableView setEditing:YES animated:YES]; // enable editing mode } else { ...} } In this block of codes, I added a new item to my current managed object context first, and then I added a new row to my tv. I think that both the number of objects in my data source or context and the number of rows in my table view should be 1. However, I got an exception in the event of tabView:numberOfRowsInSection: Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (0) must be equal to the number of rows contained in that section before the update (0), plus or minus the number of rows inserted or deleted from that section (1 inserted, 0 deleted). The exception was raised right after the delegate event: - (NSInteger) tableView:(UITableView *) tableView numberOfRawsInSection:(NSInteger) section { // fetchedResultsController is class member var NSFetchedResultsController id <NSFechedResultsSectionInfo> sectionInfo = [[fetchedResultsController sections] objectAtIndex: section]; NSInteger rows = [sectionInfo numberOfObjects]; return rows; } In debug mode, I found that the rows was still 0 and the event invoked after the the even of toggleEditing. It looks like that sectionInfo obtained from fetchedResultsController did not include the new entity object inserted. Not sure if I miss anything or steps? I am not sure how it works: to get the fetcedResultsController notified or reflect the change when a new entity is inserted into the current managed object context?

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  • Opening email attachments in Android

    - by zehrer
    I try to open a specific email attachment type with my activity, the attachment itself is a plain text windows style ini file with the extension *.os. In the email this file is attached as "application/octet-stream". I tried the following intent-filter to catch the attachment with my activity: <intent-filter> <action android:name="android.intent.action.VIEW"/> <category android:name="android.intent.category.DEFAULT"/> <category android:name="android.intent.category.BROWSABLE"/> <data android:scheme="http" android:host="*" android:pathPattern=".*\\.os"/> <data android:scheme="https" android:host="*" android:pathPattern=".*\\.os"/> <data android:scheme="content" android:host="*" android:pathPattern=".*\\.os"/> <data android:scheme="file" android:host="*" android:pathPattern=".*\\.os"/> </intent-filter> The Email app is fetching the attachment but is then telling me "The attachment cannot be displayed". What can I do? How can I debug this?

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