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• How to create an Audio CD using C# or Java

  - by Elie

  I'm looking for an API that would allow me to create an audio CD from within a C# application. The CDs are to be created and closed in the same session (no rewrite required). Basically, my application locates files on behalf of a user, and, if a blank CD is present in the drive, creates an audio CD for the user. If no CD is present, it checks to see if there's a USB drive attached and copies the files there (this part I already know how to do). I would prefer to write this application in either C# or Java, as I'm most comfortable with those, but I don't know how hard it would be to create CDs using either language. There are several other questions here that deal with regular CDs, but I didn't see any discussing audio CDs.

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• error during build using sandcastle help builder with visual studio 2010 .NET 4.0 project

  - by ZeroAbsolute

  I was using sandcastle to generate help for my project in visual studio 2008. When i change my project to visual studio 2010 and change the project .NET version to .NET 4.0 i got this problem with Sandcastel. I can't understand why sandcastel is using C:\Windows\Microsoft.NET\Framework64\v3.5\MSBuild.exe and not C:\Windows\Microsoft.NET\Framework64\v4.0\MSBuild.exe thinking that i specified as framework version the v4.0.30319 Can anyone tell me how to resolve this issue?? Where to change the path of the msbuild.exe or some other solution ??? Generating reflection information... [C:\Windows\Microsoft.NET\Framework64\v3.5\MSBuild.exe] GenerateRefInfo: MrefBuilder (v2.4.10520.1) Copyright c Microsoft 2006 Info: Loaded 1 assemblies for reflection and 0 dependency assemblies. MREFBUILDER : error : Unresolved assembly reference: System.Windows.Forms (System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089) required by WLAEDInt Last step completed in 00:00:01.2731 ------------------------------- SHFB: Error BE0043: Unexpected error detected in last build step. See output above for details.

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• Testing sample code in python modules

  - by Andrew Walker

  I'm in the process of writing a python module that includes some samples. These samples aren't unit-tests, and they are too long and complex to be doctests. I'm interested in best practices for automatically checking that these samples run. My current project layout is pretty standard, except that there is an extra top level makefile that has build, install, unittest, coverage and profile targets, that delegate responsibility to setup.py and nose as required. projectname/ Makefile README setup.py samples/ foo-sample foobar-sample projectname/ __init__.py foo.py bar.py tests/ test-foo.py test-bar.py I've considered adding a sampletest module, or adding nose.tools.istest decorators to the entry-point functions of the samples, but for a small number of samples, these solutions sound a bit ugly. This question is similar to http://stackoverflow.com/questions/301365/automatically-unit-test-example-code, but I assume python best practices will differ from C#

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• Arbitrary-precision random numbers in C: generation for Monte Carlo simulation without atmospheric n

  - by Yktula

  I know that there are other questions similar to this one, however the following question pertains to arbitrary-precision random number generation in C for use in Monte Carlo simulation. How can we generate good quality arbitrary-precision random numbers in C, when atmospheric noise isn't always available, without relying on disk i/o or network access that would create bottlenecks? libgmp is capable of generating random numbers, but, like other implementations of pseudo-random number generators, it requires a seed. As the manual mentions, "the system time is quite easy to guess, so if unpredictability is required then it should definitely not be the only source for the seed value." Is there a portable/ported library for generating random numbers, or seeds for random numbers? The libgmp also mentions that "On some systems there's a special device /dev/random which provides random data better suited for use as a seed." However, /dev/random and /dev/urandom can only be used on *nix systems.

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• MongoMapper and bson_ext problem

  - by Fossmo

  I can't get MongoMapper to work with my Rails app. I get this error message: **Notice: C extension not loaded. This is required for optimum MongoDB Ruby driver performance. You can install the extension as follows: gem install bson_ext If you continue to receive this message after installing, make sure that the bson_ext gem is in your load path and that the bson_ext and mongo gems are of the same version. I have installed DevKit and installed the gem: gem install bson_ext --no-rdoc --no-ri (result: bson_ext-1.0.1 installed) I'm running on Windows 7. The Rails version is 2.3.7. I used the RubyInstaller when installing. Can anyone point me in the right direction?

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• How to choose a integer linear programming solver ?

  - by Cassie

  Hi all, I am newbie for integer linear programming. I plan to use a integer linear programming solver to solve my combinational optimization problem. I am more familiar with C++/object oriented programming on an IDE. Now I am using NetBeans with Cygwin to write my applications most of time. May I ask if there is an easy use ILP solver for me? Or does it depend on the problem I want to solve ? I am trying to do some resources mapping optimization. please let me know if any further information is required. Thank you very much, Cassie.

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• Installing a COM object without privileged access for use in Microsoft Office

  - by bmargulies

  Start with a series of MS Office extensions built in C++ as COM objects. Add a user who really badly wants to avoid the requirement of an installer with the necessary privileges to write to HKEY_CLASSES_ROOT. I've seem bits of evidence that MS has created some sort of trick for shadowing HKEY_CLASSES_ROOT from HKCU. Is this, in fact, possible? If so, can this be installed as a non-privileged MSI, or does it have to be arranged otherwise? And, finally, what's the minimum version of Windows required?

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• ASP.Net RADs: Dynamic Data alternatives

  - by SDReyes

  Hi Guys! We have a set of tables and views that merely store some config data for embedded devices. this schema is change-prone and do not really required lots of logic, beyond some validation rules. so we considered using a RAD tool for maintaining these CRUDS. In first stage: Dynamic Data But the community size, books absence and the last modification dates of the MSDN articles (~July 2008) makes me want to hear your experiences. (actually DynamicData comes as a part of the ASP.Net MVC2 project) What has been your experience with Dynamic Data? And... What is your favorite ASP.Net RAD alternative? Why? Thank you in advance guys! PD: Entity framework friendliness is a bonus : )

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• Soft Shadows in Raytracing 3D to 2D

  - by Myx

  Hello: I wish to implement soft shadows produced by area lights in my raytracer. I'm having trouble generating the random samples. So I have a scene in which I have an area light (represented as a circle) whose world (x,y,z) coordinates of the center are given, the radius is given, the normal of the plane on which the circle lies is given, as well as the color and attenuation factors. The sampling scheme I wish to use is the following: generate samples on the quadrilateral that encompasses the circle and discard points outside the circle until the required number of samples within the circle have been found. I'm having trouble understanding how I can transform the 3D coordinates of the center of the circle to its 2D representation (I don't think I can assume that the projection of the circle is on the x-y axis and thus just get rid of the z-component). I think the plane normal information should be used but I'm not sure how. Any and all suggestions are appreciated.

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• How to avoid encoding the key of request parameters being encoding

  - by fxp

  I'm trying to send a http request using WS.url() with a action receive a custom class parameter like public static void add(@Valid MyPage info) {...} There is a Map in MyPage @Required public Map<String, String> content = new HashMap<String, String>(); But When I try to send a request with WS.url().setParameter("info.content[name]","mynameis"); The action got no parameter and request's querystring convert info.content[name] into ...%5Bname%5D... I checked the WS.createQueryString and found it will encode all key and value. Any way to avoid that?

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• Problem with the scrollbar of a UIWebView

  - by Paulo Ferreira

  Hi there! Im using a UIWebView to access a website, when i rotate the phone (landscape) the UIWebView is properly resized and the scrollbar are on the right place (on the right edge...) but when i acess any of input fields to fill the information required and exit it the UIWebView scrollbar jumps to the middle of screen (looks like it get back to 320, the width of the screen on portrait). Some useful info, this program was created using IB, have lots of outlets, im thinking about in do (redo) everything programmatically cause i was not the author of the first version... If anyone have seen this before plz let me know.. Thanks in advance!

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• Do GLSL geometry shaders work on the GMA X3100 under OSX

  - by GameFreak

  I am trying to use a trivial geometry shader but when run in Shader Builder on a laptop with a GMA X3100 it falls back and uses the software render. According this document the GMA X3100 does support EXT_geometry_shader4. The input is POINTS and the output is LINE_STRIP. What would be required to get it to run on the GPU (if possible) uniform vec2 offset; void main() { gl_Position = gl_PositionIn[0]; EmitVertex(); gl_Position = gl_PositionIn[0] + vec4(offset.x,offset.y,0,0); EmitVertex(); EndPrimitive(); }

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• Django MultiWidget Phone Number Field

  - by Birdman

  I want to create a field for phone number input that has 2 text fields (size 3, 3, and 4 respectively) with the common "(" ")" "-" delimiters. Below is my code for the field and the widget, I'm getting the following error when trying to iterate the fields in my form during initial rendering (it happens when the for loop gets to my phone number field): Caught an exception while rendering: 'NoneType' object is unsubscriptable class PhoneNumberWidget(forms.MultiWidget): def __init__(self,attrs=None): wigs = (forms.TextInput(attrs={'size':'3','maxlength':'3'}),\ forms.TextInput(attrs={'size':'3','maxlength':'3'}),\ forms.TextInput(attrs={'size':'4','maxlength':'4'})) super(PhoneNumberWidget, self).__init__(wigs, attrs) def decompress(self, value): return value or None def format_output(self, rendered_widgets): return '('+rendered_widgets[0]+')'+rendered_widgets[1]+'-'+rendered_widgets[2] class PhoneNumberField(forms.MultiValueField): widget = PhoneNumberWidget def __init__(self, *args, **kwargs): fields=(forms.CharField(max_length=3), forms.CharField(max_length=3), forms.CharField(max_length=4)) super(PhoneNumberField, self).__init__(fields, *args, **kwargs) def compress(self, data_list): if data_list[0] in fields.EMPTY_VALUES or data_list[1] in fields.EMPTY_VALUES or data_list[2] in fields.EMPTY_VALUES: raise fields.ValidateError(u'Enter valid phone number') return data_list[0]+data_list[1]+data_list[2] class AdvertiserSumbissionForm(ModelForm): business_phone_number = PhoneNumberField(required=True)

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• Rails 3 Server Startup problem with fastercsv

  - by Anand

  I have a rails 2.3.5 app getting upgraded to Rails 3. I did every thing I am required to do for upgrading and when I start the rails server using rails server it gives me this Please switch to Ruby 1.9's standard CSV library. It's FasterCSV plus support for Ruby 1.9's m17n encoding engine. I am using ruby-1.9.2-p0 and have fastercsv (1.5.3) gem installed. with the help of puts statements, i was able to track down where the error occurred. i found that the execution stops at this line Bundler.require(:default, Rails.env) if defined?(Bundler) in application.rb file. I tried many things but none worked .. please help..

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• JPA + Hibernate + Named Query + how to JOIN a subquery result

  - by Srihari

  Can anybody help me in converting the following native query into a Named Query? Native Query: SELECT usr1.user_id, urr1.role_id, usr2.user_id, urr2.role_id, usr1.school_id, term.term_name, count(material.material_id) as "Total Book Count", fpc.FOLLETT_PENDING_COUNT as "Follett Pending Count", rrc.RESOLUTION_REQUIRED_COUNT as "Resolution Required Count" FROM va_school sch JOIN va_user_school_rel usr1 on sch.school_id=usr1.school_id JOIN va_user_role_rel urr1 on usr1.user_id=urr1.user_id and urr1.role_id=1001 JOIN va_user_school_rel usr2 on sch.school_id=usr2.school_id JOIN va_user_role_rel urr2 on usr2.user_id=urr2.user_id and urr2.role_id=1002 JOIN va_term term on term.school_id = usr1.school_id JOIN va_class course on course.term_id = term.term_id JOIN va_material material on material.class_id = course.class_id LEFT JOIN (SELECT VA_CLASS.TERM_ID as "TERM_ID", COUNT(*) as "FOLLETT_PENDING_COUNT" FROM VA_CLASS JOIN VA_MATERIAL ON VA_MATERIAL.CLASS_ID = VA_CLASS.CLASS_ID WHERE VA_CLASS.reference_flag = 'A' AND trunc(VA_MATERIAL.FOLLETT_STATUS) = 0 GROUP BY VA_CLASS.TERM_ID) fpc on term.term_id = fpc.term_id LEFT JOIN (SELECT VA_CLASS.TERM_ID as "TERM_ID", COUNT(*) as "RESOLUTION_REQUIRED_COUNT" FROM VA_CLASS JOIN VA_MATERIAL ON VA_MATERIAL.CLASS_ID = VA_CLASS.CLASS_ID WHERE VA_CLASS.reference_flag = 'A' AND trunc(VA_MATERIAL.FOLLETT_STATUS) = 1 GROUP BY VA_CLASS.TERM_ID) rrc on term.term_id = rrc.term_id WHERE course.reference_flag = 'A' GROUP BY usr1.user_id, urr1.role_id, usr2.user_id, urr2.role_id, usr1.school_id, term.term_name, fpc.FOLLETT_PENDING_COUNT, rrc.RESOLUTION_REQUIRED_COUNT ORDER BY usr1.school_id, term.term_name; Thanks in advance. Srihari

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• Android - Redirect sending of SMS message

  - by Donal Rafferty

  I currently use a ContentObserver to listen for changes in the SMS ContentProvider and tell my application whether a message has been sent or received. Upon getting notification that a message is being sent I would like to present the user the option to send that SMS normally over GSM/CDMA or if connected to Wifi to send the SMS over an ip connection. I am aware of how to present my own application as an option to create and send an SMS when a user clicks on a contacts information and "Send SMS" but this is not what I want. I want the user to be able to use the native or a 3rd party SMS application and when they try to send an SMS present them with a dialog screen giving them the option to send the SMS in whichever direction they want. So is it possible that once I get notified an SMS is being sent to pause it, allow the user to pick the desired route to send it and then change the sms from being sent over GSM/CDMA to being sent using a protocol over IP if required?

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• UITableView programatically create delegate object?

  - by fuzzygoat

  I have a question regarding setting up a custom delegate class for use with UITableView. What I have done is as follows: Setup a new class (in sperate *.h and *.m files for the class) Conformed that new class to the <UITableViewDelegate, UITableViewDataSource> protocols Added the required methods. Created a pointer to the new object using @property and IBOutlet. In InterfaceBuilder created and assigned an object template to my new class Assigned the dataSource and delegate connections. This all works fine. My question is if I don't want to use interfaceBuilder to setup and instantiate my new delegate class directly in Xcode how do I go about doing that? More specifically how would I: Instantiate the delegate class, would that be created / owned by the controller? Set the dataSource and delegate connections? What is the best way of doing this? any help / information is much appreciated. Gary

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• Need explaination of a php code snippet

  - by aqif hamid

  Hello, I have code that transloads files to your server. I tried reading this code but was unable to understand. Can any PHP Guru spend some time to understand this code and comment it. Please I need to understand this code to modify this. Modification required is: at the moment it transloads files from direct links that ends up with file extension. like. www.mysite.com?file.zip but it wont work for download links like www.mysite.com?download.php?fileid=3 I want it to work for all direct links. Code is downloadable from box.net from following url as well, http://www.box.net/shared/no21luo2m2 This url is itself eample of url for which I want this script to work. regards, aqif

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• What is the least intrusive way to display WPF tooltip on focus?

  - by Andrey Shchekin

  What is the minimum number of steps required to display a tooltip when the following control gets focus? <TextBox ToolTip="Hello there!" ... /> I tried the following in GotFocus private void ..._GotFocus(object sender, RoutedEventArgs e) { var element = (FrameworkElement)sender; var tooltip = element.ToolTip; if (!(tooltip is ToolTip)) { tooltip = new ToolTip { Content = tooltip }; element.ToolTip = tooltip; } ((ToolTip)tooltip).IsOpen = true; } However, it seems to ignore the ToolTipService.Placement for this control and SystemParameters.ToolTipPopupAnimationKey set up level higher. How can I make it work and honor all settings that generally work for tooltips (except the timing, obviously)?

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• JSF submit dataTable and openpopup window after? is this possible?

  - by raimun

  Is it possible to just submit a dataTable instead of the entire form and then open a popupwindow after the submit? My dataTable has textboxes in it and the popup window is actually dependent on the data/values found in these textboxes. Since the user can change the values of the textboxes, I am required to get the latest values from the dataTables before the popup is opened. the popup is opened through a button found in each row of the datatable. i am using JSF2. thanks.

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• Visual Studio 2008 Add-in: App.config and web services.

  - by Morgeh

  I have created a visual studio add-in for VS2008. The add-in uses as web service to access data required by the developer. However, currently the only way to get the service to work is to add the service bindings to the machine.config of the pc. I know this is a bad idea and its causing errors left and right in my other applications. I have tried using app.config along side my add-in but the add-in doesn't seem to use it at all. My service call is being made from a dll referenced by the add-in would that make a difference?

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• How to use PropertyCriteria on complex property?

  - by user1394710

  I'm new to EPiSERVER. Currently trying to search for a page with a specific property set to a specific value. I need the property CatalogEntryPoint (a ContentReference) to equal something. Here is the criterea: PropertyCriteria secCriteria = new PropertyCriteria(); secCriteria.Condition = CompareCondition.Equal; secCriteria.Name = "CatalogEntryPoint.ID"; secCriteria.Type = PropertyDataType.Number; secCriteria.Value = currentContent.ContentLink.ID.ToString(); secCriteria.Required = true; And here is an excerpt from the search index: { "CatalogEntryPoint": { "$type": "EPiServer.Find.Cms.IndexableContentReference, EPiServer.Find.Cms", "ID$$number": 1073742170, "WorkID$$number": 0, "ProviderName$$string": "CatalogContent", "GetPublishedOrLatest$$bool": false, "IsExternalProvider$$bool": true, "___types": [ "EPiServer.Find.Cms.IndexableContentReference", "EPiServer.Core.ContentReference", "System.Object", "System.IComparable", "EPiServer.Data.Entity.IReadOnly" ] }, It would seem that the CatalogEntryPoint.ID-notation does not work as I'm getting 0 results. How should I write it?

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• Create Class functions on the fly?

  - by JasonS

  Hi, i have a validation class which needs improving. If I require some custom validation I need to specify a custom function. It works a bit like this: The controller tells the validation that a custom validation function is required. The controller runs the validation. --- Gets iffy here --- Validation class creates a new instance of the controller class.... Validation class runs controller-custom_validation_function() Validation class returns true / false Is there someway that I can alter this to do something like this? $validation = new validation; // Insert rules here. $validation-function() = $this-function(); By doing this I could get rid of the step of creating an unneeded class instance.

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• How do you deal with UAC when creating a process as a different user?

  - by sysrpl

  I am having an issue with UAC and executing a non interactive process as a different user (APIs such as CreateProcessAsUser or CreateProcessWithLogonW). My program is intended to do the following: 1) Create a new windows user account (check, works correctly) 2) Create a non interactive child process as new user account (fails when UAC is enabled) My application includes a administrator manifest, and elevates correct when UAC is enabled in order to complete step 1. But step 2 is failing to execute correctly. I suspect this is because the child process which executes as another user is not inheriting the elevated rights of my main process (which executes as the interactive user). I would like to know how to resolve this issue. When UAC is off my program works correctly. How can I deal with UAC or required elevated rights in this situation? If it helps any, the child process needs to run as another user in order to setup file encryption for the new user account.

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• Dynamicdata Validation Exception Message Caught in JavaScript, not DynamicValidator

  - by Perplexed

  I have a page here with a few list views on it that are all bound to Linq data sources and they seem to be working just fine. I want to add validation such that when a checkbox (IsVoid on the object) is checked, comments must be entered (VoidedComments on the object). Here's the bound object's OnValidate method: partial void OnValidate(ChangeAction action) { if (action == ChangeAction.Update) { if (_IsVoid) { string comments = this.VoidedComments; if (string.IsNullOrEmpty(this._VoidedComments)) { throw new ValidationException("Voided Comments are Required to Void an Error"); } } } } Despite there being a dynamic validator on the page referencing the same ValidationGroup as the dynamic control, when the exception fires, it's caught in JavaScript and the debugger wants to break in. The message is never delivered to the UI as expected. Any thoughts as to What's going on?

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