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  • A general question about inheritence in the .NET framework

    - by Grant
    I have a general question about inheritance in the .NET framework, lets say you have 2 classes, the first is called Parent and the second is called Child. Child inherits from Parent. Parent wants to ensure that each instance of child executes a specific piece of code when it loads irrespective of whether the child has their own onLoad code explicitly specified. From my experience, if i handle onLoad in the parent and not in the child, the parents onLoad code will fire but if its handled in both classes only the child's code will fire. Is this correct? and if so how can i ensure the parents code will always fire for the child...

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  • How to pass interface type/GUID reference to an automation method in Delphi

    - by Alan Clark
    In Delphi you can pass class references around to compare the types of objects, and to instantiate them. Can you do the same with interface references being passed to a COM automation server? For example, you can define a method taking a GUID parameter using the type library editor: function ChildNodesOfType(NodeType: TGUID): IMBNode; safecall; In this function I would like to return automation types that support the interface specified by NodeType, e.g. if Supports(SomeNode, NodeType) then result := SomeNode; But the Supports call always fails, I tried passing in the Guids defined in the type library but none of the different types (Ixxx, Class_xxxx, IId_Ixxxx) seem to work.

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  • prevent javascript in the WMD editor's preview box

    - by Justin Grant
    There are many SO questions (e.g. here and here) about how to do server-side scrubbing of Markdown produced by the WMD editor to ensure the HTML generated doesn't contain malicious script, like this: <img onload="alert('haha');" src="http://www.google.com/intl/en_ALL/images/srpr/logo1w.png" /> Unfortunately, this still allows script to show up in the WMD client's preview box. I doubt this is a big deal since if you're scrubbing the HTML on the server, an attacker can't save the bad HTML so no one else will be able to see it later and have their cookies stolen or sessions hijacked by the bad script. But it's still kinda odd to allow an attacker to run any script in the context of your site, and it's probably a bad idea to allow the client preview window to allow different HTML than your server will allow. StackOverflow has clearly plugged this hole. How did they do it? [NOTE: I already figured this out but it required some tricky javascript debugging, so I'm answering my own question here to help others who may want to do ths same thing]

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  • Killing a program if it displays a dialog box (devenv.com running under CruiseControl.net)

    - by Alan Mullett
    I have CruiseControl.net running Visual Studio (2005/2008 - using devenv.com) as we need to build deployment projects (.vdproj). At times, for various reasons devenv decides that even though it was run from the command line, using the devenv.com varient, it still wants to put up a dialog box. Now, as it's running under CruiseControl.net on a remote server this is never seen and the only syptom of this is that the build eventually times out. When the build is still in progress a look at the tasks shows devenv running but not consuming any processor power. Is there a handy utility through which could run devenv.com which basically watches the program it starts up and basically kills it if it dares to display a dialog box of any kind?

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  • Why Does Piping Binary Text to the Screen often Horck a Terminal

    - by Alan Storm
    Imaginary Situation: You’ve used mysqldump to create a backup of a mysql database. This database has columns that are blobs. That means your “text” dump files contains both strings and binary data (binary data stored as strings?) If you cat this file to the screen $ cat dump.mysql you’ll often get unexpected results. The terminal will start beeping, and then the output finishes scrolling by you’ll often have garbage chacters entered on your terminal as through you’d typed them, and sometimes your prompts and anything you type will be garbage characters. Why does this happen? Put another way, I think I’m looking for an overview of what’s actually happening when you store binary strings into a file, and when you cat those files, and when the results of the cat are reported to the terminal, and any other steps I’m missing.

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  • How to create a custom ADO Multi Demensional Catalog with no database

    - by Alan Clark
    Does anyone know of an example of how to dynamically define and build ADO MD (ActiveX Data Objects Multidimensional) catalogs and cube definitions with a set of data other than a database? Background: we have a huge amount of data in our application that we export to a database and then query using the usual SQL joins, groups, sums etc to produce reports. The data in the application is originally in objects and arrays. The problem is the amount of data is so large the export can take 2 hours. So I am trying to figure out a good way of querying the objects in memory, either by a custom OLAP algorithm or library, or ADO MD. But I haven't been able to find an example of using ADO MD without a database behind it. We are using Delphi 2010 so would use ADO ActiveX but I imagine the ADO.NET MD is similar. I realize that if the application data was already stored in a database the problem would solve itself. Also if Delphi had LINQ capability I could query the objects and arrays that way.

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  • is it possible to write a method which creates a method?

    - by Alan Bennett
    hey guys, this might seem like a no brainer but hopefully after i explain my problem you might understand why i am asking this. is it possible to have a method which creates a method and its arguements? the problem: in my current project i have to many times call different sql statements which arent all that different. for example i have one where i inserts some new rows but only has 2 columns and another which also inserts new rows but has 12 columns. i have created a class called utils.cs and in there i have sorted many "handy" methods, such as validation methods which check for numeric input to text boxes etc. so i thought well instead of having sql writing methods everywhere ill make one in there and call it when i need to so i have but it currently looks like this: public static string getInsertSQL(string tablename, string colOne, string colTwo, string colThree, string colFour, string colFive, string colSix, string colSeven, string colEight, string colNine, string colTen, string colEleven, string colTwelve,bool active, string valueOne, string valueTwo, string valueThree, string valueFour, string valueFive, string valueSix, string valueSeven, string valueEight, string valueNine, string valueTen, string valueEleven) { string strSQL = ""; strSQL += "INSERT INTO " + tablename; strSQL += "(" + colOne + " " + colTwo + " " + colThree + " " + colFour + " " + colFive + " " + colSix + " " + colSeven + " " + colEight + " " + colNine + " " + colTen + " " + colEleven + " " + colTwelve + " )"; strSQL += " values ("+active+", " + valueOne + " " + valueTwo + " " + valueThree + " " + valueFour + " " + valueFive + " " + valueSix + " " + valueSeven + " " + valueEight + " " + valueNine + " " + valueTen + " " + valueEleven + " )"; return strSQL; } as you can see thats quite a mess so i wondered if it was at all possible to write a method which would take an arguement of how many colums needed to be inserted and then could create a method with that many arguements. i hope you can see what i am getting at and dont just sound like a plep! thanks in advance

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  • Asp.Net MVC custom controls - container

    - by Alan
    Is there a way to make helper in Asp.Net MVC to wrap other html like this: <div class="lightGreyBar_left"> <div class="lightGreyBar_right"> <!--Content--> <h3> Profiles</h3> <div class="divOption"> <%= Html.ActionLinkWithImage("Create new", "add.png", Keys.Actions.CreateProfile, "add")%> </div> <!--Content--> </div> </div> So that helper will render containing divs and content that is passed to helper method as parameter.

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  • mediawiki markup equivalent of WMD editor?

    - by Justin Grant
    Anyone have a recommendation for an editor like the WMD editor, but using MediaWiki markup instead of Markdown? Our site is already using MediaWiki markup but we want a slicker editor without changing markup completely. Requirements include: live preview of formatted text underneath the markup you're typing a toolbar for common formatting (bold, italic, links, bullets, numbered-list, code, etc) keyboard shortcuts for each toolbar button (e.g. CTRL+B for bold) Undo/redo via keyboard shortcuts (CTRL+Z/CTRL+Y) or toolbar buttons works well in the usual set of popular browsers (including IE6!) open-source would be preferred

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  • Pass a Delphi class to a C++ function/method that expects a class with __thiscall methods.

    - by Alan G.
    I have some MSVC++ compiled DLL's for which I have created COM-like (lite) interfaces (abstract Delphi classes). Some of those classes have methods that need pointers to objects. These C++ methods are declared with the __thiscall calling convention (which I cannot change), which is just like __stdcall, except a this pointer is passed on the ECX register. I create the class instance in Delphi, then pass it on to the C++ method. I can set breakpoints in Delphi and see it hitting the exposed __stdcall methods in my Delphi class, but soon I get a STATUS_STACK_BUFFER_OVERRUN and the app has to exit. Is it possible to emulate/deal with __thiscall on the Delphi side of things? If I pass an object instantiated by the C++ system then all is good, and that object's methods are called (as would be expected), but this is useless - I need to pass Delphi objects. Edit 2010-04-19 18:12 This is what happens in more detail: The first method called (setLabel) exits with no error (though its a stub method). The second method called (init), enters then dies when it attempts to read the vol parameter. C++ Side #define SHAPES_EXPORT __declspec(dllexport) // just to show the value class SHAPES_EXPORT CBox { public: virtual ~CBox() {} virtual void init(double volume) = 0; virtual void grow(double amount) = 0; virtual void shrink(double amount) = 0; virtual void setID(int ID = 0) = 0; virtual void setLabel(const char* text) = 0; }; Delphi Side IBox = class public procedure destroyBox; virtual; stdcall; abstract; procedure init(vol: Double); virtual; stdcall; abstract; procedure grow(amount: Double); virtual; stdcall; abstract; procedure shrink(amount: Double); virtual; stdcall; abstract; procedure setID(val: Integer); virtual; stdcall; abstract; procedure setLabel(text: PChar); virtual; stdcall; abstract; end; TMyBox = class(IBox) protected FVolume: Double; FID: Integer; FLabel: String; // public constructor Create; destructor Destroy; override; // BEGIN Virtual Method implementation procedure destroyBox; override; stdcall; // empty - Dont need/want C++ to manage my Delphi objects, just call their methods procedure init(vol: Double); override; stdcall; // FVolume := vol; procedure grow(amount: Double); override; stdcall; // Inc(FVolume, amount); procedure shrink(amount: Double); override; stdcall; // Dec(FVolume, amount); procedure setID(val: Integer); override; stdcall; // FID := val; procedure setLabel(text: PChar); override; stdcall; // Stub method; empty. // END Virtual Method implementation property Volume: Double read FVolume; property ID: Integer read FID; property Label: String read FLabel; end; I would have half expected using stdcall alone to work, but something is messing up, not sure what, perhaps something to do with the ECX register being used? Help would be greatly appreciated. Edit 2010-04-19 17:42 Could it be that the ECX register needs to be preserved on entry and restored once the function exits? Is the this pointer required by C++? I'm probably just reaching at the moment based on some intense Google searches. I found something related, but it seems to be dealing with the reverse of this issue.

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  • How do I load Formtastic to test it?

    - by Alan
    I am using Rails 2.0.2 and following Github installation instructions: 1. add as gem source ie "gem sources -a http://gemcutter.org/".....ok 2. install gem ie "gem install formtastic"....gives error, could not find formtastic locally or in a repository I am learning Ruby on Rails and have no knowledge of gems

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  • Actionscript base class in Flex AIR app

    - by Alan
    I'm trying to build a Flex AIR app using Flex Builder 3, which I'm just getting started with. In Flash CS4, there's a text field in the authoring environment where you can specify a class that will become the "base" class - your class inherits from Sprite and then "becomes" the Stage at runtime. Is there a a way to do the same thing with Flex/AIR? Failing that, can anyone explain how to create and use an external class? Originally I had this in TestApp.mxml: <?xml version="1.0" encoding="utf-8"?> <mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:Script source="TestApp.as"/> </mx:WindowedApplication> And this in TestApp.as: package { public class TestApp { public function TestApp() { trace('Hello World'); } } } That gives the error "packages cannot be nested", so I tried taking out the package statement: public class TestApp { public function TestApp() { trace('Hello World'); } } That gives an error "classes cannot be nested", so I finally gave up and tried to take out the class altogether, figuring I'd try to start with a bunch of functions instead: function init() { trace('Hello World'); } But that gives the error "A file found in a source-path must have an externally visible definition. If a definition in the file is meant to be externally visible, please put the definition in a package". I can't win! When I put my class in a package, it says I can't do that because it would be nested. When I don't, it says it needs to be in a package so it can be seen. Does anyone know how to fix this? If I can't do the custom-class-as-base-class thing, is there a way I could just have it like: <?xml version="1.0" encoding="utf-8"?> <mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:Script source="TestApp.as"/> <mx:Script> var app = new TestApp(); </mx:Script> </mx:WindowedApplication> At the moment I can't import the class definition at all, so even that won't work. Thanks in advance!

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  • Using SalesForce's Web Service to create and set the type of a Task

    - by Alan Williamson
    I am successfully creating a Task using the SalesForce API SOAP API through Java. However, my problem is that I can't seem to set the Type of it. They all default to "Call" but I really want them to be "Email". Can someone point me in the direction of where I can do this? I think it is to do with RecordTypeMapping, but i am somewhat confused as to how to use this in my Java code to look up the particular one for Task type. I feel I have got so close with this. I have the correct WSDL that is giving me the extra method on the Task.java class, but no matter what I pass in, it dies. This doesn't seem to be a huge ask, yet i am perplexed as to which dots to join to get it to work Any help would be appreciated. thanks

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  • Searching for Nodes with Specific Text using the Prototype Javascript Framework

    - by Alan Storm
    Does the Prototype Javascript library have a selector that's equivalent to jQuery's :contains()? If not, what would what be "The Prototype Way" to selector/filter-down a list of elements that contains a particular string. For example, using the following $$('#some_div dd a') I may get back an array of 50 or so links. I only want the links that contain the work 'home'. In jQuery I'd do this jQuery('#some_div dd a:contains('home')'); Is it possible to do something similar using Prototype? If not, is there an elegant way to filter out the array of 50 elements that gets returned.

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  • ASP.NET declare a CSS stylesheet one time only

    - by Grant
    Hi, if i have a single CSS stylesheet for a website and only want to declare it once, that is, not use the following code on every aspx page.. <link href="stylesheets/general.css" rel="stylesheet" type="text/css" /> Am i forced to use a .master page? or is there another way to do this..

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  • How do I search a NTEXT column for XML attributes and update the values? MS SQL 2005

    - by Alan
    Duplicate: this exact question was asked by the same author in http://stackoverflow.com/questions/1221583/how-do-i-update-a-xml-string-in-an-ntext-column-in-sql-server. Please close this one and answer in the original question. I have a SQL table with 2 columns. ID(int) and Value(ntext) The value rows have all sorts of xml strings in them. ID Value -- ------------------ 1 <ROOT><Type current="TypeA"/></ROOT> 2 <XML><Name current="MyName"/><XML> 3 <TYPE><Colour current="Yellow"/><TYPE> 4 <TYPE><Colour current="Yellow" Size="Large"/><TYPE> 5 <TYPE><Colour current="Blue" Size="Large"/><TYPE> 6 <XML><Name current="Yellow"/><XML> How do I: A. List the rows where <TYPE><Colour current="Yellow", bearing in mind that there is an entry <XML><Name current="Yellow"/><XML> B. Modify the rows that contain <TYPE><Colour current="Yellow" to be <TYPE><Colour current="Purple" Thanks! 4 your help

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  • Prevent TEXTAREAs scroll by themselves on IE8

    - by Justin Grant
    IE8 has a known bug (per connect.microsoft.com) where typing or pasting text into a TEXTAREA element will cause the textarea to scroll by itself. This is hugely annoying and shows up in many community sites, including Wikipedia. The repro is this: open the HTML below with IE8 (or use any long page on wikipedia which will exhibit the same problem until they fix it) size the browser full-screen paste a few pages of text into the TEXTAREA move the scrollbar to the middle position now type one character into the textarea Expected: nothing happens Actual: scrossing happens on its own, and the insertion point ends up near the bottom of the textarea! Below is repro HTML (can also see this live on the web here: http://en.wikipedia.org/w/index.php?title=Text_box&action=edit) <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <body> <div style="width: 80%"> <textarea rows="20" cols="80" style="width:100%;" ></textarea> </div> </body> </html>

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  • Redis version on Cloudbees is out of date?

    - by Alan Krueger
    I'm setting up an OSS build in Cloudbees with /usr/sbin/redis-server being started as one of the build tasks: + /usr/sbin/redis-server [204] 04 Nov 03:52:58 # Warning: no config file specified, using the default config. In order to specify a config file use 'redis-server /path/to/redis.conf' [204] 04 Nov 03:52:58 * Server started, Redis version 2.0.3 The (Redis site)[http://redis.io/download] shows 2.6.2 to be the current version and 2.4.17 as "legacy". On the extended downloads page, version 2.0.3 is deprecated. Am I launching it the wrong server executable, or are there plans to support a more recent version of Redis?

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  • Editing Multiple files in vi with Wildcards

    - by Alan Storm
    When using the programmers text editor vi, I'll often using a wildcard search to be lazy about the file I want to edit vi ThisIsAReallLongFi*.txt When this matches a single file it works great. However, if it matches multiple files vi does something weird. First, it opens the first file for editing Second, when I :wq out of the file, I get a message the bottom of the terminal that looks like this E173: 4 more files to edit Hit ENTER or type command to continue When I hit enter, it returns me to edit mode in the file I was just in. The behavior I'd expect here would be that vi would move on to the next file to edit. So, What's the logic behind vi's behavior here Is there a way to move on and edit the next file that's been matched? And yes, I know about tab completion, this question is based on curiosity and wanting to understand the shell better.

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  • What are your Common Magento Configuration Mistakes?

    - by Alan Storm
    If there's something that everybody hates about Magento it's endlessly configuring your modules before being able to write some code. I'm trying to collect a list of common Magento configuration errors for a future project that's I'm close to launching. I'm looking for specific examples of things like using the wrong naming convention on classnames, forgetting the <class /> wrapper when setting up grouped class names. Little things like that that drive you batty for hours until you realize your error. The more details the better!

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  • Form Builder GUI for PHP

    - by Alan Storm
    I'm looking around for an open source form building package for PHP, and figured the hive-mob-mind of StackOverflow might be able to tilt me in the right direction. Specifically, I'm looking for a form/survey builder application. I want something that lets an end user use a web based GUI to create and configure/surveys and web-based forms. What are the de-facto standard tools/packages that people use for this kind of thing these days. I'm interested in software packages, not in hosted services.

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  • Swap CSS class on the basis of Scroll Position with Javascript

    - by Alan
    I have followed answer given by CMS in relation to getting a menu to stay in one place on the page whilst you scroll the page as per this original question and it works very well but I also have a number of images on the page where I'm using the jquery fancylink plugin to show an enlarged image on click. The problem is when you then close the fancylink popup and scroll to the top of the page the static DIV then decides to stick to the very top of the page. Any ideas or help would this would be greatly appreciated.

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