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  • Fastest way to access VB6 String in C#

    - by Simon Woods
    Hi I am using COMInterop. I have a call in VB6 which returns a string of roughly 13000 chars. If I execute the call in pure VB6 it takes about 800ms to execute. If I execute it via c# and COMInterop it takes about 8 seconds. I'm assuming the delay is caused by marshalling. If I am correct about marshalling, I'd be grateful if someone could suggest the fastest way I can get this into C#. e.g. Would it be better to a) expose it as a byte array b) provide a byref string param into the VB6 layer I would appreciate some sample code as well. I tried the Marshal.PtrToStringAuto(Marshal.ReadIntPtr(myCOMObject.GetString, 0) to no avail Many thx S

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  • How can I implement an abstract singleton class in Java?

    - by Simon
    Here is my sample abstract singleton class: public abstract class A { protected static A instance; public static A getInstance() { return instance; } //...rest of my abstract methods... } And here is the concrete implementation: public class B extends A { private B() { } static { instance = new B(); } //...implementations of my abstract methods... } Unfortunately I can't get the static code in class B to execute, so the instance variable never gets set. I have tried this: Class c = B.class; A.getInstance() - returns null; and this ClassLoader.getSystemClassLoader().loadClass("B"); A.getInstance() - return null; Running both these in the eclipse debugger the static code never gets executed. The only way I could find to get the static code executed is to change the accessibility on B's constructor to public, and to call it. I'm using sun-java6-jre on Ubuntu 32bit to run these tests.

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  • How to run batched WCF service calls in Silverlight BackgroundWorker

    - by Simon
    Is there any existing plumbing to run WCF calls in batches in a BackgroundWorker? Obviously since all Silverlight WCF calls are async - if I run them all in a backgroundworker they will all return instantly. I just don't want to implement a nasty hack if theres a nice way to run service calls and collect the results. Doesnt matter what order they are done in All operations are independent I'd like to have no more than 5 items running at once Edit: i've also noticed (when using Fiddler) that no more than about 7 calls are able to be sent at any one time. Even when running out-of-browser this limit applies. Is this due to my default browser settings - or configurable also. obviously its a poor man's solution (and not suitable for what i want) but something I'll probably need to take account of to make sure the rest of my app remains responsive if i'm running this as a background task and don't want it using up all my connections.

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  • Repository pattern with lazying loading using POCO

    - by Simon G
    Hi, I'm in the process of starting a new project and creating the business objects and data access etc. I'm just using plain old clr objects rather than any orms. I've created two class libraries: 1) Business Objects - holds all my business objects, all this objects are light weight with only properties and business rules. 2) Repository - this is for all my data access. The majority of my objects will have child list in and my question is what is the best way to lazy load these values as I don't want to bring back unnecessary information if I dont need to. I've thought about when using the "get" on the child property to check if its "null" and if it is call my repository to get the child information. This has two problems from what I can see: 1) The object "knows" how to get itself I would rather no data access logic be held in the object. 2) This required both classes to reference each other which in visual studio throws a circular dependency error. Does anyone have any suggestions on how to overcome this issue or any recommendations on my projects layout and where it can be improved? Thanks

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  • How to copy a System.Drawing.Graphics over another Graphics?

    - by Simon T.
    We got some code that implement printing using Printdocument and it does all the drawing directly on the Graphics object received in the PrintEventArgs. It would be more convenient if the code doing the drawing used another canvas and we would add this canvas to the PrintEventArgs Graphics after. Since the code already depends on the Graphics object I need a canvas with this object. I also need a way to copy the canvas onto the PrintEventArgs Graphics. I can create a Graphicsfrom an Image but as far as I know it needs to be stored on the disk. Any suggestions?

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  • HttpRequest.BeginWebRequest not executing asynchronously

    - by Shawn Simon
    I have the following code: Private Function CreateRequest() As HttpWebRequest Dim request As HttpWebRequest = HttpWebRequest.Create(_url) request.Method = "POST" request.ContentType = "application/x-www-form-urlencoded" Dim postData As String = String.Join("&", GetPostData().Select(Function(s) String.Format("{0}={1}", s.Key, HttpUtility.UrlEncode(s.Value))).ToArray) Dim data As Byte() = (New ASCIIEncoding).GetBytes(postData) request.Timeout = _maxTimeoutSeconds * 1000 Dim stream = request.GetRequestStream stream.Write(data, 0, data.Length) stream.Close() Return request End Function Public Sub SendAsync(ByVal callback As Action(Of ResponseBase)) Dim request = CreateRequest() _attemptCount += 1 Dim reqID As Integer If _loggingContext IsNot Nothing Then Try reqID = Log.NotesRequest(_url.ToString, GetPostData, _loggingContext) Catch ex As Exception ErrorTracker.LogError(ex) End Try End If Dim responseState As New ResponseState responseState.LoggedNotesRequestID = reqID responseState.Request = request responseState.Callback = callback Dim response = request.BeginGetResponse(New AsyncCallback(AddressOf RespCallback), responseState) End Sub Private Sub RespCallback(ByVal ar As IAsyncResult) Dim responseState As ResponseState = CType(ar.AsyncState, ResponseState) ' Process response... I set up the request to go to a mock server which sleeps for 30 seconds. When I call BeginGetResponse, the application just waits at that line of code for the response. I want it to carry on with the app, and then just run the callback whenever it finishes. This code is run from a web page, and my callback just logs the response and sends an email. I don't want to use to have to wait for the response.

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  • Recommend .NET data access layer/middle tier

    - by Simon G
    Hi, I'm currently creating an MVC application that will likely to expand to include a silverlight, wpf and possible windows phone all using the same data. So I've created a class library to keep all my objects in and I've created the MVC app. My question is what would be the best way to access the data? Taking into account possible expansion in the future. Should I use web services/WCF? RIA Services? Remoting? Or something else. What have people used in the past and what do you recommend? Thanks

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  • Stretching width correctly to 100% of an inline-block element in IE6 and IE7

    - by Simon Lieschke
    I have the following markup, where I am attempting to get the right hand side of the second table to align with the right hand side of the heading above it. This works in IE8, Firefox and Chrome, but in IE6/7 the table is incorrectly stretched to fill the width of the page. I'm using the Trip Switch hasLayout trigger to apply inline-block in IE6/7. Does anyone know how (or even if) I can get the table only to fill the natural width of the wrapper element displayed with inline-block in IE6/7? You can see the code running live at http://jsbin.com/uyuva. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Test</title> <style> .wrapper { display: inline-block; border: 1px solid green; } /* display: inline-block triggers the wrapper element to have layout for IE 6/7. The trip switch then provides the inline component of the display behaviour. See http://www.brunildo.org/test/InlineBlockLayout.html for more details. */ .wrapper { *display: inline; } table { border: 1px solid red; } </style> </head> <body> <h1>No width on table:</h1> <div class="wrapper"> <h2>The right hand side of the table doesn't stretch to the end of this heading</h2> <table><tr><td>foo</td></tr></table> </div> text <h1>Width on table:</h1> <div class="wrapper"> <h2>The right hand side of the table should stretch to the end of this heading</h2> <table style="width: 100%"><tr><td>foo</td></tr></table> </div> text </body> </html>

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  • PHP CMS with independent framework.

    - by Simon
    We currently use MySource Matrix CMS for large projects, Wordpress CMS for small projects and Zend Framework for bespoke applications... I'm not trying to confuse and compare a CMS to a framework, that has been done before :-) I want to identify a few CMSs for review that have foundations in strong (preferably independent) PHP frameworks. The only one I have looked at is SilverStripe CMS and Sapphire Framework. We have many clients that have a CMS for internet and/ or extranet and then various other bespoke applications that are then integrated via various means to look like they're in the CMS. I believe it will be more productive and beneficial to have a common framework between these branches so they can be natively merged. Hope this makes sense. PS. I have used custom assets in MySource Matrix and specific modules in other CMS but you feel you are working for the CMS not the application you are building.

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  • Django Error - AttributeError: 'Settings' object has no attribute 'LOCALE_PATHS'

    - by Randy Simon
    I am trying to learn django by following along with this tutorial. I am using django version 1.1.1 I run django-admin.py startproject mysite and it creates the files it should. Then I try to start the server by running python manage.py runserver but here is where I get the following error. Traceback (most recent call last): File "manage.py", line 11, in <module> execute_manager(settings) File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 362, in execute_manager utility.execute() File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 303, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 195, in run_from_argv self.execute(*args, **options.__dict__) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 213, in execute translation.activate('en-us') File "/Library/Python/2.6/site-packages/django/utils/translation/__init__.py", line 73, in activate return real_activate(language) File "/Library/Python/2.6/site-packages/django/utils/translation/__init__.py", line 43, in delayed_loader return g['real_%s' % caller](*args, **kwargs) File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 205, in activate _active[currentThread()] = translation(language) File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 194, in translation default_translation = _fetch(settings.LANGUAGE_CODE) File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 172, in _fetch for localepath in settings.LOCALE_PATHS: File "/Library/Python/2.6/site-packages/django/utils/functional.py", line 273, in __getattr__ return getattr(self._wrapped, name) AttributeError: 'Settings' object has no attribute 'LOCALE_PATHS' Now, I can add a LOCAL_PATH atribute set to an empty string to my settings.py file but then it just complains about another setting and so on. What am I missing here?

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  • How can I use a delimiter in wmic output, separating columns?

    - by Abhishek Simon
    I want to fetch Windows Hotfix listing with some format, whose output can be separated with some delimiter. so far I found a wmic command which gives me a desired output but the problem is the \s delimiter is not going to work here. Is there a way I can place some , or anyother character, which I can later use in java program to get individual columns? Command wmic qfe get caption,csname,description,hotfixid,installedby,installedon Output Caption CSName Description HotFixID InstalledBy InstalledOn http://go.microsoft.com/fwlink/?LinkId=161784 Abhishek Update KB971033 NT AUTHORITY\SYSTEM 3/15/2012 http://support.microsoft.com/?kbid=2032276 Abhishek Security Update KB2032276 NT AUTHORITY\SYSTEM 3/15/2012 .. . Update I am trying for /f "tokens=1,2,3,4,5,6,7,8,9,10,11" %g in ('wmic qfe get caption,csname,description,fixcomments,hotfixid,installdate,installedby,installedon,name,servicepackineffect,status') do @echo %g,%h,%i,%j,%k,%l,%m,%n,%o,%p but it gives me invalid GET Expression C:\Users\Abhishek\Desktop>for /f "tokens=1,2,3,4,5,6,7,8,9,10,11" %g in ('wmic qfe get caption,csname,description,fixcomments,hotfixid,installdate,installedby,installedon,name,servicepackineffect,status') do @echo %g,%h,%i,%j,%k,%l,%m,%n,%o,%p Invalid GET Expression. What is the problem here? This might solve the problem for me . More Update I even tried the below command but this too does not solve space problem Command for /f "tokens=1,2,3,4,5,6,7,8,9,10,11" %g in ('wmic qfe list') do @echo %g,%h,%i,%j,%k,%l,%m,%n,%o,%p Output Caption,CSName,Description,FixComments,HotFixID,InstallDate,InstalledBy,InstalledOn,Name,ServicePackInEffect http://go.microsoft.com/fwlink/?LinkId=161784,Abhishek,Update,KB971033,NT,AUTHOR,,Y\SYSTEM,3/15/2012, http://support.microsoft.com/?kbid=2281679,Abhishek,Security,Update,KB2281679,NT,AUTHORITY\SYSTEM,3/15/2012, http://support.microsoft.com/?kbid=2284742,Abhishek,Update,KB2284742,NT,AUTHORIT,,SYSTEM,3/15/2012, http://support.microsoft.com/?kbid=2286198,Abhishek,Security,Update,KB2286198,NT,AUTHORITY\SYSTEM,3/15/2012,

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  • How do I detach a local SVN working copy?

    - by Simon A. Eugster
    I cannot just rm -rf $(find . -name '.svn'), because I've got some directories in my working copy which are unversioned (on svn:ignore) and at the same time working copies of other svn repositories. my-repo |+ directory ||- .svn (to delete) ||- files... |+ another_directory ||- .svn (to delete) ||- files... |+ directory_ignored (svn:ignore) ||- .svn (different working copy) ||- more files ... So I'd like to just tell subversion to remove all .svn directories belonging to this working copy only. Is this possible? The directory structure is quite complex, so doing it manually would really suck.

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  • Android Compound Control internal click events

    - by Simon
    Hi, I'm writing a custom compound control that extends RelativeLayout. Inside this component, there is an ImageView. I add a OnClickListener to this ImageView to animate it when the user clicks on it. But when I am in an activity using this control and I add a OnClickListener on the control, this listener is never called. It only works when I remove the other listener I have on the ImageView. Does anybody knows how to "propagate" the event to the other listeners when I catch it inside the control? Thanks! PS: I would also like to know if there is an existing control that looks like the icons on the Android desktop. Like an icon with text underneath.

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  • Is there a DRM scheme that works?

    - by Simon
    We help our clients to manage and publish their media online - images, video, audio, whatever. They always ask my boss whether they can stop users from copying their media, and he asks me, and I always tell him the same thing: no. If the users can view the media, then a sufficiently determined user will always be able to make a copy. But am I right? I've been asked again today, and I promised my boss I'd ask about it online. So - is there a DRM scheme that will work? One that will stop users making copies without stopping legitimate viewing of the media? And if there isn't, how do I convince my boss?

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  • mysql max function usage

    - by Simon
    the table videos has the folowing feels id,average,name how can i write the query, to select the name of video, which have the max average!!! i can do that vith two queries, by selecting the max(avege) from the table, and then find out the name, where ihe average equal to max!!! but i want to do that in one query!!! help me please!!!

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  • python manage.py runserver fails

    - by Randy Simon
    I am trying to learn django by following along with this tutorial. I am using django version 1.1.1 I run django-admin.py startproject mysite and it creates the files it should. Then I try to start the server by running python manage.py runserver but here is where I get the following error. Traceback (most recent call last): File "manage.py", line 11, in <module> execute_manager(settings) File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 362, in execute_manager utility.execute() File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 303, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 195, in run_from_argv self.execute(*args, **options.__dict__) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 213, in execute translation.activate('en-us') File "/Library/Python/2.6/site-packages/django/utils/translation/__init__.py", line 73, in activate return real_activate(language) File "/Library/Python/2.6/site-packages/django/utils/translation/__init__.py", line 43, in delayed_loader return g['real_%s' % caller](*args, **kwargs) File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 205, in activate _active[currentThread()] = translation(language) File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 194, in translation default_translation = _fetch(settings.LANGUAGE_CODE) File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 172, in _fetch for localepath in settings.LOCALE_PATHS: File "/Library/Python/2.6/site-packages/django/utils/functional.py", line 273, in __getattr__ return getattr(self._wrapped, name) AttributeError: 'Settings' object has no attribute 'LOCALE_PATHS' Now, I can add a LOCALE_PATH atribute and set to an empty tuple to my settings.py file but then it just complains about another setting and so on. What am I missing here?

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  • Color Theory: How to convert Munsell HVC to RGB/HSB/HSL

    - by Ian Boyd
    I'm looking at at document that describes the standard colors used in dentistry to describe the color of a tooth. They quote hue, value, chroma values, and indicate they are from the 1905 Munsell description of color: The system of colour notation developed by A. H. Munsell in 1905 identifies colour in terms of three attributes: HUE, VALUE (Brightness) and CHROMA (saturation) [15] HUE (H): Munsell defined hue as the quality by which we distinguish one colour from another. He selected five principle colours: red, yellow, green, blue, and purple; and five intermediate colours: yellow-red, green-yellow, blue-green, purple-blue, and red-purple. These were placed around a colour circle at equal points and the colours in between these points are a mixture of the two, in favour of the nearer point/colour (see Fig 1.). VALUE (V): This notation indicates the lightness or darkness of a colour in relation to a neutral grey scale, which extends from absolute black (value symbol 0) to absolute white (value symbol 10). This is essentially how ‘bright’ the colour is. CHROMA (C): This indicates the degree of divergence of a given hue from a neutral grey of the same value. The scale of chroma extends from 0 for a neutral grey to 10, 12, 14 or farther, depending upon the strength (saturation) of the sample to be evaluated. There are various systems for categorising colour, the Vita system is most commonly used in Dentistry. This uses the letters A, B, C and D to notate the hue (colour) of the tooth. The chroma and value are both indicated by a value from 1 to 4. A1 being lighter than A4, but A4 being more saturated than A1. If placed in order of value, i.e. brightness, the order from brightest to darkest would be: A1, B1, B2, A2, A3, D2, C1, B3, D3, D4, A3.5, B4, C2, A4, C3, C4 The exact values of Hue, Value and Chroma for each of the shades is shown below (16) So my question is, can anyone convert Munsell HVC into RGB, HSB or HSL? Hue Value (Brightness) Chroma(Saturation) === ================== ================== 4.5 7.80 1.7 2.4 7.45 2.6 1.3 7.40 2.9 1.6 7.05 3.2 1.6 6.70 3.1 5.1 7.75 1.6 4.3 7.50 2.2 2.3 7.25 3.2 2.4 7.00 3.2 4.3 7.30 1.6 2.8 6.90 2.3 2.6 6.70 2.3 1.6 6.30 2.9 3.0 7.35 1.8 1.8 7.10 2.3 3.7 7.05 2.4 They say that Value(Brightness) varies from 0..10, which is fine. So i take 7.05 to mean 70.5%. But what is Hue measured in? i'm used to hue being measured in degrees (0..360). But the values i see would all be red - when they should be more yellow, or brown. Finally, it says that Choma/Saturation can range from 0..10 ...or even higher - which makes it sound like an arbitrary scale. So can anyone convert Munsell HVC to HSB or HSL, or better yet, RGB?

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  • Caliburn and prism samples

    - by Simon
    Are there any sample applications avaliable that make use of both caliburn and prism? I know there are blogs that talk about it but I would like to wade into some code and see how it all fits together. http://caliburn.codeplex.com http://compositewpf.codeplex.com/

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  • "Object reference not set to an instance of an object": why can't .NET show more details?

    - by Simon Chadwick
    "Object reference not set to an instance of an object" This is probably one of the most common run-time errors in .NET. Although the System.Exception has a stack trace, why does the exception not also show the name of the object reference field, or at least its type? Over the course of a year I spend hours sifting through stack traces (often in code I did not write), hoping there is a line number from a ".pdb" file, then finding the line in the code, and even then it is often not obvious which reference on the line was null. Having the name of the reference field would be very convenient. If System.ArgumentNullException instances can show the name of the method parameter ("Value cannot be null. Parameter name: value"), then surely System.NullReferenceException instances could include the name of the null field (or its containing collection).

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  • Xcode: Internal error occurred while creating dependency graph

    - by Randy Simon
    I just started getting this error today, seemingly out of nowhere. Any one see this before and know what causes it. Internal error occurred while creating dependency graph: *** -[NSCFArray initWithObjects:count:]: attempt to insert nil object at objects[10] This happens when I try to build with "iPhone Device 3.x" selected. However, if I select "iPhone Simulator 3.x", everything is fine.

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  • Winrar sfx deletes files too early

    - by Simon Ottenhaus
    I'm trying to build a sfx (self extracting archive) using winrar. I'm using VS2008 to build a setup.exe and a myapp.msi. If setup.exe is executed it does some checking an launches myapp.msi I'm using some sfx options to make the extraction quiet and make it extract so some temp folder: ;Der folgende Kommentar enthält SFX-Skriptbefehle Setup=setup.exe TempMode Silent=2 Overwrite=1 It seems winrar deletes the msi right after setup.exe is launched. Setup.exe can't find the msi and crashes. Is there some way to fix this?

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