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• CodePlex Daily Summary for Thursday, November 17, 2011

  CodePlex Daily Summary for Thursday, November 17, 2011Popular ReleasesSharpMap - Geospatial Application Framework for the CLR: SharpMap-0.9-AnyCPU-Trunk-2011.11.17: This is a build of SharpMap from the 0.9 development trunk as per 2011-11-17 For most applications the AnyCPU release is the recommended, but in case you need an x86 build that is included to. For some dataproviders (GDAL/OGR, SqLite, PostGis) you need to also referense the SharpMap.Extensions assembly For SqlServer Spatial you need to reference the SharpMap.SqlServerSpatial assemblySQL Monitor - tracking sql server activities: SQLMon 4.1 alpha 5: 1. added basic schema support 2. added server instance name and process id 3. fixed problem with object search index out of range 4. improved version comparison with previous/next difference navigation 5. remeber main window spliter and object explorer spliter positionAJAX Control Toolkit: November 2011 Release: AJAX Control Toolkit Release Notes - November 2011 Release Version 51116November 2011 release of the AJAX Control Toolkit. AJAX Control Toolkit .NET 4 - Binary – AJAX Control Toolkit for .NET 4 and sample site (Recommended). AJAX Control Toolkit .NET 3.5 - Binary – AJAX Control Toolkit for .NET 3.5 and sample site (Recommended). Notes: - The current version of the AJAX Control Toolkit is not compatible with ASP.NET 2.0. The latest version that is compatible with ASP.NET 2.0 can be found h...MVC Controls Toolkit: Mvc Controls Toolkit 1.5.5: Added: Now the DateRanteAttribute accepts complex expressions containing "Now" and "Today" as static minimum and maximum. Menu, MenuFor helpers capable of handling a "currently selected element". The developer can choose between using a standard nested menu based on a standard SimpleMenuItem class or specifying an item template based on a custom class. Added also helpers to build the tree structure containing all data items the menu takes infos from. Improved the pager. Now the developer ...SharpCompress - a fully native C# library for RAR, 7Zip, Zip, Tar, GZip, BZip2: SharpCompress 0.7: Reworked API to be more consistent. See Supported formats table. Added some more helper methods - e.g. OpenEntryStream (RarArchive/RarReader does not support this) Fixed up testsFiles Name Copier: 1.0.0.1: Files Name Copier is a simple easy to use utility that allows you to drag and drop any number of files onto it. The clipboard will now contain the list of files you dropped.Silverlight Toolkit: Windows Phone Toolkit - Nov 2011 (7.1 SDK): This release is coming soon! What's new ListPicker once again works in a ScrollViewer LongListSelector bug fixes around OutOfRange exceptions, wrong ordering of items, grouping issues, and scrolling events. ItemTuple is now refactored to be the public type LongListSelectorItem to provide users better access to the values in selection changed handlers. PerformanceProgressBar binding fix for IsIndeterminate (item 9767 and others) There is no longer a GestureListener dependency with the C...DotNetNuke® Community Edition: 06.01.01: Major Highlights Fixed problem with the core skin object rendering CSS above the other framework inserted files, which caused problems when using core style skin objects Fixed issue with iFrames getting removed when content is saved Fixed issue with the HTML module removing styling and scripts from the content Fixed issue with inserting the link to jquery after the header of the page Security Fixesnone Updated Modules/Providers ModulesHTML version 6.1.0 ProvidersnoneDotNetNuke Performance Settings: 01.00.00: First release of DotNetNuke SQL update queries to set the DNN installation for optimimal performance. Please review and rate this release... (stars are welcome)SCCM Client Actions Tool: SCCM Client Actions Tool v0.8: SCCM Client Actions Tool v0.8 is currently the latest version. It comes with following changes since last version: Added "Wake On LAN" action. WOL.EXE is now included. Added new action "Get all active advertisements" to list all machine based advertisements on remote computers. Added new action "Get all active user advertisements" to list all user based advertisements for logged on users on remote computers. Added config.ini setting "enablePingTest" to control whether ping test is ru...QuickGraph, Graph Data Structures And Algorithms for .Net: 3.6.61116.0: Portable library build that allows to use QuickGraph in any .NET environment: .net 4.0, silverlight 4.0, WP7, Win8 Metro apps.Devpad: 4.7: Whats new for Devpad 4.7: New export to Rich Text New export to FlowDocument Minor Bug Fix's, improvements and speed upsC.B.R. : Comic Book Reader: CBR 0.3: New featuresAdd magnifier size and scale New file info view in the backstage Add dynamic properties on book and settings Sorting and grouping in the explorer with new design Rework on conversion : Images, PDF, Cbr/rar, Cbz/zip, Xps to the destination formats Images, Cbz and XPS ImprovmentsSuppress MainViewModel and ExplorerViewModel dependencies Add view notifications and Messages from MVVM Light for ViewModel=>View notifications Make thread better on open catalog, no more ihm freeze, less t...Desktop Google Reader: 1.4.2: This release remove the like and the broadcast buttons as Google Reader stopped supporting them (no, we don't like this decission...) Additionally and to have at least a small plus: the login window now automaitcally logs you in if you stored username and passwort (no more extra click needed) Finally added WebKit .NET to the about window and removed Awesomium MD5-Hash: 5fccf25a2fb4fecc1dc77ebabc8d3897 SHA-Hash: d44ff788b123bd33596ad1a75f3b9fa74a862fdbRDRemote: Remote Desktop remote configurator V 1.0.0: Remote Desktop remote configurator V 1.0.0Rawr: Rawr 4.2.7: This is the Downloadable WPF version of Rawr!For web-based version see http://elitistjerks.com/rawr.php You can find the version notes at: http://rawr.codeplex.com/wikipage?title=VersionNotes Rawr AddonWe now have a Rawr Official Addon for in-game exporting and importing of character data hosted on Curse. The Addon does not perform calculations like Rawr, it simply shows your exported Rawr data in wow tooltips and lets you export your character to Rawr (including bag and bank items) like Char...VidCoder: 1.2.2: Updated Handbrake core to svn 4344. Fixed the 6-channel discrete mixdown option not appearing for AAC encoders. Added handling for possible exceptions when copying to the clipboard, added retries and message when it fails. Fixed issue with audio bitrate UI not appearing sometimes when switching audio encoders. Added extra checks to protect against reported crashes. Added code to upgrade encoding profiles on old queued items.Composite C1 CMS: Composite C1 3.0 RC3 (3.0.4332.33416): This is currently a Release Candidate. Upgrade guidelines and "what's new" are pending.Media Companion: MC 3.422b Weekly: Ensure .NET 4.0 Full Framework is installed. (Available from http://www.microsoft.com/download/en/details.aspx?id=17718) Ensure the NFO ID fix is applied when transitioning from versions prior to 3.416b. (Details here) TV Show Resolutions... Made the TV Shows folder list sorted. Re-visibled 'Manually Add Path' in Root Folders. Sorted list to process during new tv episode search Rebuild Movies now processes thru folders alphabetically Fix for issue #208 - Display Missing Episodes is not popu...DotSpatial: DotSpatial Release Candidate: Supports loading extensions using System.ComponentModel.Composition. DemoMap compiled as x86 so that GDAL runs on x64 machines. How to: Use an Assembly from the WebBe aware that your browser may add an identifier to downloaded files which results in "blocked" dll files. You can follow the following link to learn how to "Unblock" files. Right click on the zip file before unzipping, choose properties, go to the general tab and click the unblock button. http://msdn.microsoft.com/en-us/library...New Projects#WP7_chameleon: Simple augmented reality app for WP7 that explores the new Mango webcam API. ASP.NET MVC Manialink Extensions: ASP.NET MVC Manialink extensions are a set of extensions for the Razor HtmlHelper class that programmatically generate Manialink XML elements. It's developed in C# (.NET 4.0) for the ASP.NET MVC 3 framework.Basic Text Games in C#: Have fun converting some old B.A.S.I.C. text games into C# using MEF for plug-in capabilities. This is a good project for beginners to learn how to follow logic and convert between languages.Chuanzhuo: Chuanzhuo projCountriesGame: A simple game, players needs to find a country starts with given letterDeployAssistant: You can use it to update you website EntSGE: SGEExtended Immediate Window Mark 2: An Extended Immediate Window for Visual Studio that can use multiple lines of code at a time rather then just one.Facebook Suite Connect Orchard module: Part of the Facebook Suite Orchard module that provides simple login functionality with Facebook ConnectGet TFS 2010 Users: Use this tool to read extended group membership of a TFS 2010 Server. GoogleTestAddin: GoogleTestAddin is an Add-In for Visual Studio 2010. It makes it easier to execute/debug googletest functions by selecting them. You'll no longer have to set the command arguments of your test application. The googletest output is redirected to the Visual Studio output window.Home Financial Manager: ;photel_organizer: Hotel organizer project from a group of students at the university deggendorfInfoCine: Aplicación en Windows Phone 7 para dar información acerca de la cartelera de los cines.Injection of values using Annotation and Reflection: Example of reflection and annotation to inject values in variables in java.Interviews: My implementation of some common problems asked at various interviews.iPipal: adsfadsfadISDS: Informacni systemy a datove skladyivvy vendor management CMS: This is vendor CMS module of the ivvy suite Ross BrodskiyKaartenASPApplicatie: ASP.Net applicatieMap Viet Nam: Control Map VietNamMoney Transfer: A project for rotating money. Software for brokering service.Music Renamer: Renames music files into the format of "00 Track Name.ext"NetOS: NetOS is an Operating System designed for Netbooks and Tablets.Orchard Audit: For Orchard CMS, a framework for logging common audit events such as viewing, editing, deleting content - allowing you to track who changed what and when, with an extensible API to audit any custom events, and configurable in admin with the Rules engine in Orchard 1.3.Orchard Layout Selector: A simple part for switching to different versions of Layout.cshtml when editing Orchard content items.PT Kurejas: This is a small tool to create image tests for web sites. Now is only available only in lithuanian language.Reactive State Machine: Reactive State Machine is a State Machine implementation based on Reactive Extensions. It plays nicely with the Visual State Manager of WPF.Root finding and related routines: C++ generic algorithms for finding roots of floating point functions.Shaping Menu Manager: Shaping Menu ManagerShuttleBus: ShuttleBus is a lightweight Service Bus implementation designed to be easily extensible and unobtrusive.silverlight ? flash? policy ??: silverlight? flash? policy socket server? ??Technical trading indicators: Small classes for computing indicators used in technical analysis.Umbraco Active Directory Role Provider: Active Directory Role Provider for umbraco membership (and sample user control) With this role provider, a user control and some IIS configuration you can do seamless authentication (no login prompt) onto your umbraco site and user the Active Directory roles insider umbraco.UtilityLibrary.Security: UtilityLibrary.SecurityUtilityLibrary.Serialize: UtilityLibrary.SerializeUtilityLibrary.StringOperator: UtilityLibrary.StringOperatorUtilityLibrary.Task: UtilityLibrary.TaskVSTweaker: VSTweaker allows you to modify the components that Visual Studio loads. This can lead to performance benefits by reducing the overhead of unused components. XNA Simple Game Engine: XNA Simple Game Engine is a small and simple engine that makes it easy to make simple projects with XNA 4.0r and C#.

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• Why does Perl lose foreign characters on Windows input - can this be fixed (if so, how) or is Perl an outdated dinosaur that just can't handle this?

  - by Alex R

  Note below how ã changes to a This is causing me a huge problem as foreign characters show up in URLs, e.g. http://pt.wikipedia.org/wiki/Cão The OS is Windows 7, 64-bit. The Perl is: This is perl 5, version 12, subversion 2 (v5.12.2) built for MSWin32-x64-multi-thread (with 8 registered patches, see perl -V for more detail) Copyright 1987-2010, Larry Wall Binary build 1202 [293621] provided by ActiveState http://www.ActiveState.com Built Sep 6 2010 22:53:42 Additional update: To get around my particular problem, I tried using File::Find instead of piped input. The issue actually gets worse:

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• Optimized OCR black/white pixel algorithm

  - by eagle

  I am writing a simple OCR solution for a finite set of characters. That is, I know the exact way all 26 letters in the alphabet will look like. I am using C# and am able to easily determine if a given pixel should be treated as black or white. I am generating a matrix of black/white pixels for every single character. So for example, the letter I (capital i), might look like the following: 01110 00100 00100 00100 01110 Note: all points, which I use later in this post, assume that the top left pixel is (0, 0), bottom right pixel is (4, 4). 1's represent black pixels, and 0's represent white pixels. I would create a corresponding matrix in C# like this: CreateLetter("I", new List<List<bool>>() { new List<bool>() { false, true, true, true, false }, new List<bool>() { false, false, true, false, false }, new List<bool>() { false, false, true, false, false }, new List<bool>() { false, false, true, false, false }, new List<bool>() { false, true, true, true, false } }); I know I could probably optimize this part by using a multi-dimensional array instead, but let's ignore that for now, this is for illustrative purposes. Every letter is exactly the same dimensions, 10px by 11px (10px by 11px is the actual dimensions of a character in my real program. I simplified this to 5px by 5px in this posting since it is much easier to "draw" the letters using 0's and 1's on a smaller image). Now when I give it a 10px by 11px part of an image to analyze with OCR, it would need to run on every single letter (26) on every single pixel (10 * 11 = 110) which would mean 2,860 (26 * 110) iterations (in the worst case) for every single character. I was thinking this could be optimized by defining the unique characteristics of every character. So, for example, let's assume that the set of characters only consists of 5 distinct letters: I, A, O, B, and L. These might look like the following: 01110 00100 00100 01100 01000 00100 01010 01010 01010 01000 00100 01110 01010 01100 01000 00100 01010 01010 01010 01000 01110 01010 00100 01100 01110 After analyzing the unique characteristics of every character, I can significantly reduce the number of tests that need to be performed to test for a character. For example, for the "I" character, I could define it's unique characteristics as having a black pixel in the coordinate (3, 0) since no other characters have that pixel as black. So instead of testing 110 pixels for a match on the "I" character, I reduced it to a 1 pixel test. This is what it might look like for all these characters: var LetterI = new OcrLetter() { Name = "I", BlackPixels = new List<Point>() { new Point (3, 0) } } var LetterA = new OcrLetter() { Name = "A", WhitePixels = new List<Point>() { new Point(2, 4) } } var LetterO = new OcrLetter() { Name = "O", BlackPixels = new List<Point>() { new Point(3, 2) }, WhitePixels = new List<Point>() { new Point(2, 2) } } var LetterB = new OcrLetter() { Name = "B", BlackPixels = new List<Point>() { new Point(3, 1) }, WhitePixels = new List<Point>() { new Point(3, 2) } } var LetterL = new OcrLetter() { Name = "L", BlackPixels = new List<Point>() { new Point(1, 1), new Point(3, 4) }, WhitePixels = new List<Point>() { new Point(2, 2) } } This is challenging to do manually for 5 characters and gets much harder the greater the amount of letters that are added. You also want to guarantee that you have the minimum set of unique characteristics of a letter since you want it to be optimized as much as possible. I want to create an algorithm that will identify the unique characteristics of all the letters and would generate similar code to that above. I would then use this optimized black/white matrix to identify characters. How do I take the 26 letters that have all their black/white pixels filled in (e.g. the CreateLetter code block) and convert them to an optimized set of unique characteristics that define a letter (e.g. the new OcrLetter() code block)? And how would I guarantee that it is the most efficient definition set of unique characteristics (e.g. instead of defining 6 points as the unique characteristics, there might be a way to do it with 1 or 2 points, as the letter "I" in my example was able to). An alternative solution I've come up with is using a hash table, which will reduce it from 2,860 iterations to 110 iterations, a 26 time reduction. This is how it might work: I would populate it with data similar to the following: Letters["01110 00100 00100 00100 01110"] = "I"; Letters["00100 01010 01110 01010 01010"] = "A"; Letters["00100 01010 01010 01010 00100"] = "O"; Letters["01100 01010 01100 01010 01100"] = "B"; Now when I reach a location in the image to process, I convert it to a string such as: "01110 00100 00100 00100 01110" and simply find it in the hash table. This solution seems very simple, however, this still requires 110 iterations to generate this string for each letter. In big O notation, the algorithm is the same since O(110N) = O(2860N) = O(N) for N letters to process on the page. However, it is still improved by a constant factor of 26, a significant improvement (e.g. instead of it taking 26 minutes, it would take 1 minute). Update: Most of the solutions provided so far have not addressed the issue of identifying the unique characteristics of a character and rather provide alternative solutions. I am still looking for this solution which, as far as I can tell, is the only way to achieve the fastest OCR processing. I just came up with a partial solution: For each pixel, in the grid, store the letters that have it as a black pixel. Using these letters: I A O B L 01110 00100 00100 01100 01000 00100 01010 01010 01010 01000 00100 01110 01010 01100 01000 00100 01010 01010 01010 01000 01110 01010 00100 01100 01110 You would have something like this: CreatePixel(new Point(0, 0), new List<Char>() { }); CreatePixel(new Point(1, 0), new List<Char>() { 'I', 'B', 'L' }); CreatePixel(new Point(2, 0), new List<Char>() { 'I', 'A', 'O', 'B' }); CreatePixel(new Point(3, 0), new List<Char>() { 'I' }); CreatePixel(new Point(4, 0), new List<Char>() { }); CreatePixel(new Point(0, 1), new List<Char>() { }); CreatePixel(new Point(1, 1), new List<Char>() { 'A', 'B', 'L' }); CreatePixel(new Point(2, 1), new List<Char>() { 'I' }); CreatePixel(new Point(3, 1), new List<Char>() { 'A', 'O', 'B' }); // ... CreatePixel(new Point(2, 2), new List<Char>() { 'I', 'A', 'B' }); CreatePixel(new Point(3, 2), new List<Char>() { 'A', 'O' }); // ... CreatePixel(new Point(2, 4), new List<Char>() { 'I', 'O', 'B', 'L' }); CreatePixel(new Point(3, 4), new List<Char>() { 'I', 'A', 'L' }); CreatePixel(new Point(4, 4), new List<Char>() { }); Now for every letter, in order to find the unique characteristics, you need to look at which buckets it belongs to, as well as the amount of other characters in the bucket. So let's take the example of "I". We go to all the buckets it belongs to (1,0; 2,0; 3,0; ...; 3,4) and see that the one with the least amount of other characters is (3,0). In fact, it only has 1 character, meaning it must be an "I" in this case, and we found our unique characteristic. You can also do the same for pixels that would be white. Notice that bucket (2,0) contains all the letters except for "L", this means that it could be used as a white pixel test. Similarly, (2,4) doesn't contain an 'A'. Buckets that either contain all the letters or none of the letters can be discarded immediately, since these pixels can't help define a unique characteristic (e.g. 1,1; 4,0; 0,1; 4,4). It gets trickier when you don't have a 1 pixel test for a letter, for example in the case of 'O' and 'B'. Let's walk through the test for 'O'... It's contained in the following buckets: // Bucket Count Letters // 2,0 4 I, A, O, B // 3,1 3 A, O, B // 3,2 2 A, O // 2,4 4 I, O, B, L Additionally, we also have a few white pixel tests that can help: (I only listed those that are missing at most 2). The Missing Count was calculated as (5 - Bucket.Count). // Bucket Missing Count Missing Letters // 1,0 2 A, O // 1,1 2 I, O // 2,2 2 O, L // 3,4 2 O, B So now we can take the shortest black pixel bucket (3,2) and see that when we test for (3,2) we know it is either an 'A' or an 'O'. So we need an easy way to tell the difference between an 'A' and an 'O'. We could either look for a black pixel bucket that contains 'O' but not 'A' (e.g. 2,4) or a white pixel bucket that contains an 'O' but not an 'A' (e.g. 1,1). Either of these could be used in combination with the (3,2) pixel to uniquely identify the letter 'O' with only 2 tests. This seems like a simple algorithm when there are 5 characters, but how would I do this when there are 26 letters and a lot more pixels overlapping? For example, let's say that after the (3,2) pixel test, it found 10 different characters that contain the pixel (and this was the least from all the buckets). Now I need to find differences from 9 other characters instead of only 1 other character. How would I achieve my goal of getting the least amount of checks as possible, and ensure that I am not running extraneous tests?

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• Two-way databinding of a custom templated control. Eval works, but not Bind.

  - by Jason

  I hate long code snippets and I'm sorry about this one, but it turns out that this asp.net stuff can't get much shorter and it's so specific that I haven't been able to generalize it without a full code listing. I just want simple two-way, declarative databinding to a single instance of an object. Not a list of objects of a type with a bunch of NotImplementedExceptions for Add, Delete, and Select, but just a single view-state persisted object. This is certainly something that can be done but I've struggled with an implementation for years. This newest, closest implementation was inspired by this article from 4-Guys-From-Rolla, http://msdn.microsoft.com/en-us/library/aa478964.aspx. Unfortunately, after implementing, I'm getting the following error and I don't know what I'm missing: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. If I don't use Bind(), and only use Eval() functionality, it works. In that way, the error is especially confusing. Here's the simplified codeset that still produces the error: using System.ComponentModel; namespace System.Web.UI.WebControls.Special { public class SampleFormData { public string SampleString = "Sample String Data"; public int SampleInt = -1; } [ToolboxItem(false)] public class SampleSpecificFormDataContainer : WebControl, INamingContainer { SampleSpecificEntryForm entryForm; internal SampleSpecificEntryForm EntryForm { get { return entryForm; } } [Bindable(true), Category("Data")] public string SampleString { get { return entryForm.FormData.SampleString; } set { entryForm.FormData.SampleString = value; } } [Bindable(true), Category("Data")] public int SampleInt { get { return entryForm.FormData.SampleInt; } set { entryForm.FormData.SampleInt = value; } } internal SampleSpecificFormDataContainer(SampleSpecificEntryForm entryForm) { this.entryForm = entryForm; } } public class SampleSpecificEntryForm : WebControl, INamingContainer { #region Template private IBindableTemplate formTemplate = null; [Browsable(false), DefaultValue(null), TemplateContainer(typeof(SampleSpecificFormDataContainer), ComponentModel.BindingDirection.TwoWay), PersistenceMode(PersistenceMode.InnerProperty)] public virtual IBindableTemplate FormTemplate { get { return formTemplate; } set { formTemplate = value; } } #endregion #region Viewstate SampleFormData FormDataVS { get { return (ViewState["FormData"] as SampleFormData) ?? new SampleFormData(); } set { ViewState["FormData"] = value; SaveViewState(); } } #endregion public override ControlCollection Controls { get { EnsureChildControls(); return base.Controls; } } private SampleSpecificFormDataContainer formDataContainer = null; [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)] public SampleSpecificFormDataContainer FormDataContainer { get { EnsureChildControls(); return formDataContainer; } } [Bindable(true), Browsable(false)] public SampleFormData FormData { get { return FormDataVS; } set { FormDataVS = value; } } protected override void CreateChildControls() { if (!this.ChildControlsCreated) { Controls.Clear(); formDataContainer = new SampleSpecificFormDataContainer(this); Controls.Add(formDataContainer); FormTemplate.InstantiateIn(formDataContainer); this.ChildControlsCreated = true; } } public override void DataBind() { CreateChildControls(); base.DataBind(); } } } With an ASP.NET page the following: <%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default2.aspx.cs" Inherits="EntryFormTest._Default2" EnableEventValidation="false" %> <%@ Register Assembly="EntryForm" Namespace="System.Web.UI.WebControls.Special" TagPrefix="cc1" %> <asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent"> </asp:Content> <asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent"> <h2> Welcome to ASP.NET! </h2> <cc1:SampleSpecificEntryForm ID="EntryForm1" runat="server"> <FormTemplate> <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("SampleString") %>'></asp:TextBox><br /> <h3>(<%# Container.SampleString %>)</h3><br /> <asp:Button ID="Button1" runat="server" Text="Button" /> </FormTemplate> </cc1:SampleSpecificEntryForm> </asp:Content> Default2.aspx.cs using System; namespace EntryFormTest { public partial class _Default2 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { EntryForm1.DataBind(); } } } Thanks for any help!

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• o write a C++ program to encrypt and decrypt certain codes.

  - by Amber

  Step 1: Write a function int GetText(char[],int); which fills a character array from a requested file. That is, the function should prompt the user to input the filename, and then read up to the number of characters given as the second argument, terminating when the number has been reached or when the end of file is encountered. The file should then be closed. The number of characters placed in the array is then returned as the value of the function. Every character in the file should be transferred to the array. Whitespace should not be removed. When testing, assume that no more than 5000 characters will be read. The function should be placed in a file called coding.cpp while the main will be in ass5.cpp. To enable the prototypes to be accessible, the file coding.h contains the prototypes for all the functions that are to be written in coding.cpp for this assignment. (You may write other functions. If they are called from any of the functions in coding.h, they must appear in coding.cpp where their prototypes should also appear. Do not alter coding.h. Any other functions written for this assignment should be placed, along with their prototypes, with the main function.) Step 2: Write a function int SimplifyText(char[],int); which simplifies the text in the first argument, an array containing the number of characters as given in the second argument, by converting all alphabetic characters to lower case, removing all non-alpha characters, and replacing multiple whitespace by one blank. Any leading whitespace at the beginning of the array should be removed completely. The resulting number of characters should be returned as the value of the function. Note that another array cannot appear in the function (as the file does not contain one). For example, if the array contained the 29 characters "The 39 Steps" by John Buchan (with the " appearing in the array), the simplified text would be the steps by john buchan of length 24. The array should not contain a null character at the end. Step 3: Using the file test.txt, test your program so far. You will need to write a function void PrintText(const char[],int,int); that prints out the contents of the array, whose length is the second argument, breaking the lines to exactly the number of characters in the third argument. Be warned that, if the array contains newlines (as it would when read from a file), lines will be broken earlier than the specified length. Step 4: Write a function void Caesar(const char[],int,char[],int); which takes the first argument array, with length given by the second argument and codes it into the third argument array, using the shift given in the fourth argument. The shift must be performed cyclicly and must also be able to handle negative shifts. Shifts exceeding 26 can be reduced by modulo arithmetic. (Is C++'s modulo operations on negative numbers a problem here?) Demonstrate that the test file, as simplified, can be coded and decoded using a given shift by listing the original input text, the simplified text (indicating the new length), the coded text and finally the decoded text. Step 5: The permutation cypher does not limit the character substitution to just a shift. In fact, each of the 26 characters is coded to one of the others in an arbitrary way. So, for example, a might become f, b become q, c become d, but a letter never remains the same. How the letters are rearranged can be specified using a seed to the random number generator. The code can then be decoded, if the decoder has the same random number generator and knows the seed. Write the function void Permute(const char[],int,char[],unsigned long); with the same first three arguments as Caesar above, with the fourth argument being the seed. The function will have to make up a permutation table as follows: To find what a is coded as, generate a random number from 1 to 25. Add that to a to get the coded letter. Mark that letter as used. For b, generate 1 to 24, then step that many letters after b, ignoring the used letter if encountered. For c, generate 1 to 23, ignoring a or b's codes if encountered. Wrap around at z. Here's an example, for only the 6 letters a, b, c, d, e, f. For the letter a, generate, from 1-5, a 2. Then a - c. c is marked as used. For the letter b, generate, from 1-4, a 3. So count 3 from b, skipping c (since it is marked as used) yielding the coding of b - f. Mark f as used. For c, generate, from 1-3, a 3. So count 3 from c, skipping f, giving a. Note the wrap at the last letter back to the first. And so on, yielding a - c b - f c - a d - b (it got a 2) e - d f - e Thus, for a given seed, a translation table is required. To decode a piece of text, we need the table generated to be re-arranged so that the right hand column is in order. In fact you can just store the table in the reverse way (e.g., if a gets encoded to c, put a opposite c is the table). Write a function called void DePermute(const char[],int,char[], unsigned long); to reverse the permutation cypher. Again, test your functions using the test file. At this point, any main program used to test these functions will not be required as part of the assignment. The remainder of the assignment uses some of these functions, and needs its own main function. When submitted, all the above functions will be tested by the marker's own main function. Step 6: If the seed number is unknown, decoding is difficult. Write a main program which: (i) reads in a piece of text using GetText; (ii) simplifies the text using SimplifyText; (iii) prints the text using PrintText; (iv) requests two letters to swap. If we think 'a' in the text should be 'q' we would type aq as input. The text would be modified by swapping the a's and q's, and the text reprinted. Repeat this last step until the user considers the text is decoded, when the input of the same letter twice (requesting a letter to be swapped with itself) terminates the program. Step 7: If we have a large enough sample of coded text, we can use knowledge of English to aid in finding the permutation. The first clue is in the frequency of occurrence of each letter. Write a function void LetterFreq(const char[],int,freq[]); which takes the piece of text given as the first two arguments (same as above) and returns in the 26 long array of structs (the third argument), the table of the frequency of the 26 letters. This frequency table should be in decreasing order of popularity. A simple Selection Sort will suffice. (This will be described in lectures.) When printed, this summary would look something like v x r s z j p t n c l h u o i b w d g e a q y k f m 168106 68 66 59 54 48 45 44 35 26 24 22 20 20 20 17 13 12 12 4 4 1 0 0 0 The formatting will require the use of input/output manipulators. See the header file for the definition of the struct called freq. Modify the program so that, before each swap is requested, the current frequency of the letters is printed. This does not require further calls to LetterFreq, however. You may use the traditional order of regular letter frequencies (E T A I O N S H R D L U) as a guide when deciding what characters to exchange. Step 8: The decoding process can be made more difficult if blank is also coded. That is, consider the alphabet to be 27 letters. Rewrite LetterFreq and your main program to handle blank as another character to code. In the above frequency order, space usually comes first.

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• Write a C++ program to encrypt and decrypt certain codes.

  - by Amber

  Step 1: Write a function int GetText(char[],int); which fills a character array from a requested file. That is, the function should prompt the user to input the filename, and then read up to the number of characters given as the second argument, terminating when the number has been reached or when the end of file is encountered. The file should then be closed. The number of characters placed in the array is then returned as the value of the function. Every character in the file should be transferred to the array. Whitespace should not be removed. When testing, assume that no more than 5000 characters will be read. The function should be placed in a file called coding.cpp while the main will be in ass5.cpp. To enable the prototypes to be accessible, the file coding.h contains the prototypes for all the functions that are to be written in coding.cpp for this assignment. (You may write other functions. If they are called from any of the functions in coding.h, they must appear in coding.cpp where their prototypes should also appear. Do not alter coding.h. Any other functions written for this assignment should be placed, along with their prototypes, with the main function.) Step 2: Write a function int SimplifyText(char[],int); which simplifies the text in the first argument, an array containing the number of characters as given in the second argument, by converting all alphabetic characters to lower case, removing all non-alpha characters, and replacing multiple whitespace by one blank. Any leading whitespace at the beginning of the array should be removed completely. The resulting number of characters should be returned as the value of the function. Note that another array cannot appear in the function (as the file does not contain one). For example, if the array contained the 29 characters "The 39 Steps" by John Buchan (with the " appearing in the array), the simplified text would be the steps by john buchan of length 24. The array should not contain a null character at the end. Step 3: Using the file test.txt, test your program so far. You will need to write a function void PrintText(const char[],int,int); that prints out the contents of the array, whose length is the second argument, breaking the lines to exactly the number of characters in the third argument. Be warned that, if the array contains newlines (as it would when read from a file), lines will be broken earlier than the specified length. Step 4: Write a function void Caesar(const char[],int,char[],int); which takes the first argument array, with length given by the second argument and codes it into the third argument array, using the shift given in the fourth argument. The shift must be performed cyclicly and must also be able to handle negative shifts. Shifts exceeding 26 can be reduced by modulo arithmetic. (Is C++'s modulo operations on negative numbers a problem here?) Demonstrate that the test file, as simplified, can be coded and decoded using a given shift by listing the original input text, the simplified text (indicating the new length), the coded text and finally the decoded text. Step 5: The permutation cypher does not limit the character substitution to just a shift. In fact, each of the 26 characters is coded to one of the others in an arbitrary way. So, for example, a might become f, b become q, c become d, but a letter never remains the same. How the letters are rearranged can be specified using a seed to the random number generator. The code can then be decoded, if the decoder has the same random number generator and knows the seed. Write the function void Permute(const char[],int,char[],unsigned long); with the same first three arguments as Caesar above, with the fourth argument being the seed. The function will have to make up a permutation table as follows: To find what a is coded as, generate a random number from 1 to 25. Add that to a to get the coded letter. Mark that letter as used. For b, generate 1 to 24, then step that many letters after b, ignoring the used letter if encountered. For c, generate 1 to 23, ignoring a or b's codes if encountered. Wrap around at z. Here's an example, for only the 6 letters a, b, c, d, e, f. For the letter a, generate, from 1-5, a 2. Then a - c. c is marked as used. For the letter b, generate, from 1-4, a 3. So count 3 from b, skipping c (since it is marked as used) yielding the coding of b - f. Mark f as used. For c, generate, from 1-3, a 3. So count 3 from c, skipping f, giving a. Note the wrap at the last letter back to the first. And so on, yielding a - c b - f c - a d - b (it got a 2) e - d f - e Thus, for a given seed, a translation table is required. To decode a piece of text, we need the table generated to be re-arranged so that the right hand column is in order. In fact you can just store the table in the reverse way (e.g., if a gets encoded to c, put a opposite c is the table). Write a function called void DePermute(const char[],int,char[], unsigned long); to reverse the permutation cypher. Again, test your functions using the test file. At this point, any main program used to test these functions will not be required as part of the assignment. The remainder of the assignment uses some of these functions, and needs its own main function. When submitted, all the above functions will be tested by the marker's own main function. Step 6: If the seed number is unknown, decoding is difficult. Write a main program which: (i) reads in a piece of text using GetText; (ii) simplifies the text using SimplifyText; (iii) prints the text using PrintText; (iv) requests two letters to swap. If we think 'a' in the text should be 'q' we would type aq as input. The text would be modified by swapping the a's and q's, and the text reprinted. Repeat this last step until the user considers the text is decoded, when the input of the same letter twice (requesting a letter to be swapped with itself) terminates the program. Step 7: If we have a large enough sample of coded text, we can use knowledge of English to aid in finding the permutation. The first clue is in the frequency of occurrence of each letter. Write a function void LetterFreq(const char[],int,freq[]); which takes the piece of text given as the first two arguments (same as above) and returns in the 26 long array of structs (the third argument), the table of the frequency of the 26 letters. This frequency table should be in decreasing order of popularity. A simple Selection Sort will suffice. (This will be described in lectures.) When printed, this summary would look something like v x r s z j p t n c l h u o i b w d g e a q y k f m 168106 68 66 59 54 48 45 44 35 26 24 22 20 20 20 17 13 12 12 4 4 1 0 0 0 The formatting will require the use of input/output manipulators. See the header file for the definition of the struct called freq. Modify the program so that, before each swap is requested, the current frequency of the letters is printed. This does not require further calls to LetterFreq, however. You may use the traditional order of regular letter frequencies (E T A I O N S H R D L U) as a guide when deciding what characters to exchange. Step 8: The decoding process can be made more difficult if blank is also coded. That is, consider the alphabet to be 27 letters. Rewrite LetterFreq and your main program to handle blank as another character to code. In the above frequency order, space usually comes first.

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• How to implement drag and drop in Flex Grid control?

  - by Bogdan

  I have a simple Grid control with some buttons that I want to be able to move around. The code below does work, but it takes a lot of effort to actually do the drag&drop and it is not clear where the drop will happen. I have to move the mouse around a lot to get to a state where the drop is not rejected. I would appreciate any suggestions on how to make this more "user friendly". <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" verticalAlign="middle" horizontalAlign="center" height="200" width="200"> <mx:Script> <![CDATA[ import mx.containers.GridItem; import mx.controls.Button; import mx.core.DragSource; import mx.events.*; import mx.managers.DragManager; private function dragInit(event:MouseEvent):void { if(event.buttonDown) { var button:Button = event.currentTarget as Button; var dragSource:DragSource = new DragSource(); dragSource.addData(button, 'button'); DragManager.doDrag(button, dragSource, event); } } private function dragEnter(event:DragEvent): void { var target:GridItem = event.currentTarget as GridItem; if (event.dragSource.hasFormat('button') && target.getChildren().length == 0) { DragManager.acceptDragDrop(target); DragManager.showFeedback(DragManager.MOVE); } } private function dragDrop(event:DragEvent): void { var target:GridItem = event.currentTarget as GridItem; var button:Button = event.dragSource.dataForFormat('button') as Button; target.addChild(button); } ]]> </mx:Script> <mx:Grid> <mx:GridRow width="100%" height="100%"> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> </mx:GridItem> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> </mx:GridItem> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> <mx:Button label="A" width="40" height="40" mouseMove="dragInit(event)"/> </mx:GridItem> </mx:GridRow> <mx:GridRow width="100%" height="100%"> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> </mx:GridItem> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> <mx:Button label="B" width="40" height="40" mouseMove="dragInit(event)"/> </mx:GridItem> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> </mx:GridItem> </mx:GridRow> <mx:GridRow width="100%" height="100%"> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> <mx:Button label="C" width="40" height="40" mouseMove="dragInit(event)"/> </mx:GridItem> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> </mx:GridItem> <mx:GridItem width="44" height="44" dragEnter="dragEnter(event)" dragDrop="dragDrop(event)"> </mx:GridItem> </mx:GridRow> </mx:Grid> <mx:Style> GridItem { borderColor: #A09999; borderStyle: solid; borderThickness: 2; horizontal-align: center; vertical-align: center; } Grid { borderColor: #A09999; borderStyle: solid; borderThickness: 2; horizontalGap: 0; verticalGap: 0; horizontal-align: center; vertical-align: center; } </mx:Style> </mx:Application>

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• Web site DNS configuration Without using hosting nameservers

  - by user39110

  Hi, i am publishing my website(www.muratturan.com) by using godaddy's "Total DNS Control". My configuration like this: 1-) I configured my domain to total dns control by setting nameservers to total dns control's. 2-) In total dns control panel i set A host to directly my VPS's ip address. 3-) Also i configured mx records to google apps. Everythings looks good but i am thinking that is this technuqie has any negative effects ? Thanks

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• Acrobat Reader ActiveX in WebBrowser stealing focus [C#]

  - by Maciej

  I'm using webBrowser.Navigate(url) control to display page. I noticed this action steals focus from current control (grid) and than I have problem to focus grid back (tired myGrid.Focus, .Select etc...) This is really annoying behaviour of browser... Does anyone knows how to prevent focus stealing by Browser or (if not) hot to force to focus control back ? EDIT: I've also tried webBrowser.DocumentCompleted event to focus back to grid EDIT 2 Good case to test this is openning PDF files webBrowser.Navigate(@"C:\TEMP\test.pdf") I believe this is ActiveX issue. On first glance it looks that this is not problem with focusing control but loosing entire Form focus... EDIT 3 I tried another approach: Form keyPress event: I thought I can capture form's keyPress and move focus from WebBrowser / AdobeReader ActiveX to my control. But surprisingly event is not fired! Looks Reader taken all control and there is no way to do anything programically until you do mouse click on (at least) form's caption Any advice (s) ?

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• How to diagnose cause, fix, or work around Adobe ActiveX / COM related error 0x80004005 progmaticall

  - by Streamline

  I've built a C# .NET app that uses the Adobe ActiveX control to display a PDF. It relies on a couple DLLs that get shipped with the application. These DLLs interact with the locally installed Adobe Acrobat or Adobe Acrobat Reader installed on the machine. This app is being used by some customer already and works great for nearly all users ( I check to see that the local machine is running at least version 9 of either Acrobat or Reader already ). I've found 3 cases where the app returns the error message "Error HRESULT E_FAIL has been returned from a call to a COM component" when trying to load (when the activex control is loading). I've checked one of these user's machines and he has Acrobat 9 installed and is using it frequently with no problems. It does appear that Acrobat 7 and 8 were installed at one time since there are entries for them in the registry along with Acrobat 9. I can't reproduce this problem locally, so I am not sure exactly which direction to go. The error at the top of the stacktrace is: System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component. Some research into this error indicates it is a registry problem. Does anyone have a clue as to how to fix or work around this problem, or determine how to get to the core root of the problem? The full content of the error message is this: System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component.    at System.Windows.Forms.UnsafeNativeMethods.CoCreateInstance(Guid& clsid, Object punkOuter, Int32 context, Guid& iid)    at System.Windows.Forms.AxHost.CreateWithoutLicense(Guid clsid)    at System.Windows.Forms.AxHost.CreateWithLicense(String license, Guid clsid)    at System.Windows.Forms.AxHost.CreateInstanceCore(Guid clsid)    at System.Windows.Forms.AxHost.CreateInstance()    at System.Windows.Forms.AxHost.GetOcxCreate()    at System.Windows.Forms.AxHost.TransitionUpTo(Int32 state)    at System.Windows.Forms.AxHost.CreateHandle()    at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)    at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)    at System.Windows.Forms.AxHost.EndInit()    at AcrobatChecker.Viewer.InitializeComponent()    at AcrobatChecker.Viewer..ctor()    at AcrobatChecker.Form1.btnViewer_Click(Object sender, EventArgs e)    at System.Windows.Forms.Control.OnClick(EventArgs e)    at System.Windows.Forms.Button.OnClick(EventArgs e)    at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)    at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)    at System.Windows.Forms.Control.WndProc(Message& m)    at System.Windows.Forms.ButtonBase.WndProc(Message& m)    at System.Windows.Forms.Button.WndProc(Message& m)    at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)    at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)    at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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• How to calculate checksum?

  - by Patel Rikin

  I m developing instrument driver and i want to know how to calculate checksum of frame. Explanation: Expressed by characters [0-9] and [A-F]. Characters beginning from the character after [STX] and until [ETB] or [ETX] (including [ETB] or [ETX]) are added in binary. The 2-digit numbers, which represent the least significant 8 bits in hexadecimal code, are converted to ASCII characters [0-9] and [A-F]. The most significant digit is stored in CHK1 and the least significant digit in CHK2. This is sample frame : <STX>2Q|1|2^1||||20011001153000<CR><ETX><CHK1><CHK2><CR><LF> and i want to know what is value of chk1 and chk2 and i am new in this so i m totally blank about how to calculate checksum i am not getting above 3rd and 4th point. can any one provide sample code for c#. Please help me.

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• UserControl Focus Issue - Focus() sometimes returns false

  - by Craigger

  I have a user control that behaves similar to a tab control. The tab headers are UserControls that override Paint events to make them look custom. In order to leverage the Validating events on various controls on our tab pages, when the user clicks on the tab headers, we set the Focus to the TabHeader user control. I've noticed that Control.Focus() returns false sometimes but the documentation does not say why Control.Focus() will ever return false other than that the control can't receive focus. But I don't know why. Here's what i see. If my TabHeader UserControl does not contain any subcontrols, and I call myControl.Focus() from the MouseClick event, focus returns true. If my TabHeader UserControl contains a subcontrol, and I call myControl.Focus() from the MouseClick event, focus returns false. If my TabHeader UserControl contains a subcontrol, and I call myControl.subControl.Focus() from the myControl.MouseClick event, focus returns true. Can someone explain this?

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• Custom form designer, move/resize controls using WinAPI

  - by jonny

  I have to fix some problems and enchance form designer written long ago for a database project. In Design Panel class code I encountered these lines private void DesignPanel_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { (sender as Control).Capture = false; switch (FMousePosition) { case MousePosition.mpNone: SendMessage((sender as Control).Handle, WM_SYSCOMMAND, 0xF009, 0); break;// Move case MousePosition.mpRightBottom: SendMessage((sender as Control).Handle, WM_SYSCOMMAND, 0xF008, 0); break;//RB case MousePosition.mpLeftBottom: SendMessage((sender as Control).Handle, WM_SYSCOMMAND, 0xF007, 0); // ... here are similar cases ... case MousePosition.mpLeft: SendMessage((sender as Control).Handle, WM_SYSCOMMAND, 0xF001, 0); break;//L } } } FMousePosition indicates whether mouse was over any edge of selected control. What confusing me is these windows messages: it seems there is no documentation on WM_SYSCOMMAND with parameters 0xF001-0xF009 (maybe it starts some kind of 'drag/resize sequence'). Any ideas? If my suggestion is right, then how can I cancel these sequences?

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• Error when using TransformToAncestor: "The specified Visual is not an ancestor of this Visual."

  - by Brian Sullivan

  I'm trying to get the offset of a control relative to the top of its window, but I'm running into trouble when using the TransformToAncestor method of the control. Note: this code is in a value converter which will convert from a control to its relative Y position in relation to the window. public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { var ctrl = (Control) value; var win = Window.GetWindow(ctrl); var transform = ctrl.TransformToAncestor(win); // Exception thrown here. var pt = transform.Transform(new Point(0, 0)); return pt.Y; } The call to Window.GetWindow works just fine, and returns the correct window object inside which the control resides. Am I misunderstanding what WPF thinks of as an "ancestor"? I would think that given the result of GetWindow, that window would be an ancestor of the control. Are there certain nesting patters that would cause the line of ancestry to be cut off at a certain point?

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• Winform problem with autoscrolling of the ScrollableControl

  - by BobLim

  Hi guys, I have a problem with autoscrolling of the .NET ScrollableControl. I am using TabPage which inherited from ScrollableControl in the class hierarachy. Every TabPage object has only 1 UserControl derived control which draws the landscape; there is no other control on the tabpage. The usage of my application is its user will drag a file from windows explorer and drop into the TabPage. As more files are dragged and dropped, the UserControl derived control will expand to accomodate the drawing of the files and auto-scrolling will be enabled. The problem I have is when I mouse-click on the UserControl control, the vertical and horizontal scrollbars will scroll back to (0,0) position. I want the vertical and horizontal scrollbars to remain at their original scrolled position whatever happens. I believe when I mouse-click on the UserControl control, the UserControl control comes into focus and that triggers the auto-scrolling to (0,0) position. Please help. Thanks in advance!

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• Wrong encoding in DataReceivedEventArgs

  - by user2102508

  I start cmd.exe process and redirect stdin to pass script to it and redirect stdout and stderr to read cmd's output. Here is the code of my DataReceivedEventHandler: (o, a) => { if(!String.IsNullOrEmpty(a.Data)) { bw.Write(a.Data.ToUTF8()); bw.Write((byte)'\n'); } } In the code bw is instance of BinaryWriter, ToUTF8 is string extension method, that converts a string to UTF8 encoded byte array. When I use this code in a separate process it works well, however when I use this code as a shared library inside some other process a.Data doesn't contain valid localized characters (like russian characters for example). So how should I convert characters? How to get cmd's OEM encoding? Why does the code works well in a separate process and doesn't work as a shared library inside some other process?

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• RenderControl error

  - by Rubans

  HI, I have a grid with which I'm templating columns with and one column is a user control. Since I'm adding these in the code behind ( using ITemplate), I get an error when I try to render the UserControl. This particular user control does require a scriptmanager since it includes a ajax control (radcombobox). The error I get is : Script control 'LookupComboBox' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors(). I'm not sure even if my approach is correct using user control and using RenderControl.

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• Micro QR Code Generator with minimal error correction

  - by Florian Peschka

  I am searching a Micro QR Code Generator that fulfills the following requirements: At least 20 characters encoded Minimal error correction (required to get the 20 characters stuffed in) I already searched google, but it seems all micro qr generators automatically use maximum error correction, which is very unhandy for my task, as we need the 20 characters completety. I can't use standard QR because there are certain requirements that need the code to be smaller than a certain dimension when printed... I hope someone can help me. PS: I'm not sure that this is the right board to post this question on, so feel free to redirect me to a better board if you have an idea. PPS: If nothing can be found and I'm forced to write one on my own: Where can I find detailed information on how to write a QR code generator?

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• List input and output audio devices in Applet

  - by Jhonny Everson

  I am running a signed applet that needs to provide the ability for the user to select the input and output audio devices ( similar to what skype provides). I borrowed the following code from other thread: import javax.sound.sampled.*; public class SoundAudit { public static void main(String[] args) { try { System.out.println("OS: "+System.getProperty("os.name")+" "+ System.getProperty("os.version")+"/"+ System.getProperty("os.arch")+"\nJava: "+ System.getProperty("java.version")+" ("+ System.getProperty("java.vendor")+")\n"); for (Mixer.Info thisMixerInfo : AudioSystem.getMixerInfo()) { System.out.println("Mixer: "+thisMixerInfo.getDescription()+ " ["+thisMixerInfo.getName()+"]"); Mixer thisMixer = AudioSystem.getMixer(thisMixerInfo); for (Line.Info thisLineInfo:thisMixer.getSourceLineInfo()) { if (thisLineInfo.getLineClass().getName().equals( "javax.sound.sampled.Port")) { Line thisLine = thisMixer.getLine(thisLineInfo); thisLine.open(); System.out.println(" Source Port: " +thisLineInfo.toString()); for (Control thisControl : thisLine.getControls()) { System.out.println(AnalyzeControl(thisControl));} thisLine.close();}} for (Line.Info thisLineInfo:thisMixer.getTargetLineInfo()) { if (thisLineInfo.getLineClass().getName().equals( "javax.sound.sampled.Port")) { Line thisLine = thisMixer.getLine(thisLineInfo); thisLine.open(); System.out.println(" Target Port: " +thisLineInfo.toString()); for (Control thisControl : thisLine.getControls()) { System.out.println(AnalyzeControl(thisControl));} thisLine.close();}}} } catch (Exception e) {e.printStackTrace();}} public static String AnalyzeControl(Control thisControl) { String type = thisControl.getType().toString(); if (thisControl instanceof BooleanControl) { return " Control: "+type+" (boolean)"; } if (thisControl instanceof CompoundControl) { System.out.println(" Control: "+type+ " (compound - values below)"); String toReturn = ""; for (Control children: ((CompoundControl)thisControl).getMemberControls()) { toReturn+=" "+AnalyzeControl(children)+"\n";} return toReturn.substring(0, toReturn.length()-1);} if (thisControl instanceof EnumControl) { return " Control:"+type+" (enum: "+thisControl.toString()+")";} if (thisControl instanceof FloatControl) { return " Control: "+type+" (float: from "+ ((FloatControl) thisControl).getMinimum()+" to "+ ((FloatControl) thisControl).getMaximum()+")";} return " Control: unknown type";} } But what I get: Mixer: Software mixer and synthesizer [Java Sound Audio Engine] Mixer: No details available [Microphone (Pink Front)] I was expecting the get the real list of my devices (My preferences panels shows 3 output devices and 1 Microphone). I am running on Mac OS X 10.6.7. Is there other way to get that info from Java?

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• A human-friendlier Samba name mangling

  - by Alex

  Most of our computers run Ubuntu, but two of them dual-boot into Windows, and when we have guests over, they typically also run Windows computers. Thus, in addition to using NFS, our file server (Ubuntu server) also runs Samba. And since we use Ubuntu mostly, we like to take advantage of its advantages over Windows, such as being able to use the characters \:*?"<>| in a file name. The problem, of course, is that Windows doesn't accept those characters in file names, and so Samba has to translate the file name into something more acceptable. The way it does this, however, I find to be obnoxious. The file name Episode 182 - Exorcist 2: The Heretic.mp4 for instance turns into E4Q82R~Y.MP4. This is a terrible "correction". Is there a way to make Samba's mangling a little more friendly to humans? Is possible to "correct" it to something like Episode 182 - Exorcist 2_ The Heretic.mp4 instead, where the illegal characters are simply substituted?

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• How to load a page with its default values after a postback

  - by Shrage Smilowitz

  I'm creating user controls that i will put into an update panel and make them visible only when required using triggers. Once visible it will float in a dialog box so it has a close button which will just hide the control on client side. The controls have multiple post back states, like a wizard, i'm using a multi view control to accomplish that. My problem is that once the user is at step number two in the control, if the user closes the dialog, than opens the dialog again, (note that the control is made visible on the server and reloaded by updating the updatepanel) the second step will still be displayed. The reason is . because whenever there is a postback the control will load its state using the viewstate, even if EnableViewState is false it will still load it using the LoadControlState method. so my quesion is how can i force a user control to load fresh with its default values without any postback data.

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• Why does TabStop stop working??

  - by Jerry

  I have a project that uses a series of auto-generated user control instances. The user-control itself exists, but I populate a panel with a series of these user controls, one for each item in my collection. Each user control displays a ton of information, but only ONE text field is editable. All of the other fields have TabStop set to false, and are marked as ReadOnly. The tab order of each user control is set at the time it is created so that the tab-key goes from one field to the next (or ... it's supposed to). When I have TWO fields on my user control whose TabStop is set to true, everything works great. But if I only have ONE field whose TabStop is true, the tab key stops working, and I have to physically CLICK on the next user control for it to gain focus. What's up? Has anyone else seen this behavior? Am I doing something stupid as usual?

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• How long should my Html Page Title Really be?

  - by RandomBen

  How long should my text within my <title></title> tags really be? I know Google cuts it off at some point but when? When I used IIS7's SEO Toolkit 1.0 I get error stating my title should be under 65 characters. I have a book by Bruce Clay that states I should use from 62-70 characters and roughly 9 +/- 3 words. I also have used SenSEO's Firefox Add-on and it states I should use a max of 65 characters or roughly 15 words. What is the max really? I have 2 sources saying 65 and 1 saying 72 but Bruce Clay is generally kept in high regard.

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• jQuery selectors - parental problems

  - by aressidi

  Hi there, I have an emote selector that opens up when a user clicks an entry in a diary. The way I've worked it is that the emote selector panel lives hidden at the top of the page. When a user clicks on the 'emote control' associated with an entry, I use JavaScript to grab the HTML of the emote selector panel from the top of the page and insert it next to the entry. Using Firebug, here's what the finished product would look like in the page (snippet from element inspect). I'm trying to get the ID for the class 'emote-control-container' which contains the entry id: <td> <div id="1467002" class="emote-select emote-default">&nbsp;</div> <div class="emote-control-container" id="emote-controls-1467002"> <div id="emote-control-selector"> <div id="emote-control-selector-body"> <ul> <li id="emote-1"><img src="/images/default_emote.gif?1276134900" class="emote-image" alt="Default_emote"></li> <li id="emote-2"><img src="/images/default_emote.gif?1276134900" class="emote-image" alt="Default_emote"></li> <li id="emote-3"><img src="/images/default_emote.gif?1276134900" class="emote-image" alt="Default_emote"></li> <li id="emote-4"><img src="/images/default_emote.gif?1276134900" class="emote-image" alt="Default_emote"></li> </ul> </div> <div id="emote-control-selector-footer"> &nbsp; </div> </div> </div> </td> I need the entry ID along with the emote ID to make a post via AJAX when a user selects an emote from the selector panel by clicking on it. I'm able to get the emote ID just fine with this, which I'm using to alert-out the selected emote ID: jQuery('li').live('click', function(e) { e.preventDefault; var emoteId = this.id; alert(emoteId); }); I'm having trouble traversing up DOM to get the element ID from '.emote-control-container. I've tried everything, but I'd expect this to work, but it doesn't: jQuery('li').live('click', function(e) { e.preventDefault; var entryId = jQuery(this.id).parent(".emote-control-container").attr("id"); alert(entryId); }); What am I doing wrong.? I can't target the ID of the .emote-control-container.

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• What type of encoding can I use to make a string shorter?

  - by Abe Miessler

  I am interested in encoding a string I have and I am curious if there is a type of encoding that can be used that will only include alpha and numeric characters and would preferably shorten the number of characters needed to represent the string. So far I have looked at using Base64 encoding to do this but it appears to make my string longer and sometimes includes == which I would like to avoid. Example: test name|120101 becomes dGVzdCBuYW1lfDEyMDEwMQ== which goes from 16 to 24 characters and includes non-alphanumeric. Does anyone know of a different type of encoding that I could use that will achieve my requirements? Bonus points if it's either built into the .NET framework or there exists a third party library that will do the encoding.

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