Click here to Skip to main content

Submit your article

Virtual

virtual

Great Reads

TmStorage, Open-source Storage Engine for .NET

by Tomaz Koritnik

TmStorage is a structureless virtual file system from which complex storages or databases can be built.

Implement Virtual List with Paged Data

by Young Ye

This article solve the performance issue while loading and displaying large amounts of data by using a virtual list with paged data technique.

HoloLens Development using Visual Studio 2015 and Unity HoloLens Technical Preview

by Mark Vinod Sinnathamby

This post is a tutorial that is complimentary to the session I did, demonstrating the steps of how a simple holographic application can be built and deployed in the HoloLens emulator.

Troubleshooting Hard-to-Find Windows Subsystem for Linux (WSL) Crash Due to Issues with NTVDMx64

by Minh Danh Nguyen (ToughDev)

This article describes how to use WinDbg to identify issues that may prevent Windows Subsystem for Linux (WSL) from starting.

Latest Articles

Troubleshooting Hard-to-Find Windows Subsystem for Linux (WSL) Crash Due to Issues with NTVDMx64

by Minh Danh Nguyen (ToughDev)

This article describes how to use WinDbg to identify issues that may prevent Windows Subsystem for Linux (WSL) from starting.

Azure’s New Private Subnet

by Wessel Beulink

Microsoft Azure enhances security with private subnets, fostering efficient network management.

Capturing Data from a Tektronix 1230 Logic Analyzer by Emulating a Parallel Port Printer

by ToughDev

Emulate parallel port printer to capture data from Tektronix 1230 Logic Analyzer

Hyper-V and Hardware Assisted Virtualization

by ToughDev

Hyper-V & Hardware Assisted Virtualization

All Articles

Virtual

[Not a question] ASP.NET in virtual classroom

10 Nov 2013 by OriginalGriff

We do not do your homework: it is set for a reason. It is there so that you think about what you have been told, and try to understand it. It is also there so that your tutor can identify areas where you are weak, and focus more attention on remedial action.Try it yourself, or learn the...

[Not a question] virtual list view winapi

14 Nov 2013 by Member 10402390

I will be grateful for virtual view list example lvs_ownerdatathanks.

[Not a question] virtual list view winapi

14 Nov 2013 by CHill60

Did you even try Google with the search "virtual view list example lvs_ownerdata" - the exact wording in your post?If you had then you would have found this CodeProject article[^]

[Not a question] virtual list view winapi

14 Nov 2013 by Member 10402390

I found this.this MFC. I hoped on clean winapi...

a physical path, but a virtual path was expected in C#

12 Dec 2012 by kishanthakar

I am trying to download resume file from folder nameed as strjobID and file name is stored in CommandArgument of grid view , but while execution I am Getting this Exception'D:/AdminApp/Jobportals/Utils/ApplicantFiles/27/directory.txt' is a physical path, but a virtual path was...

a physical path, but a virtual path was expected in C#

12 Dec 2012 by Christian Graus

I assume this line is the error:byte[] data = req.DownloadData(Server.MapPath(strURL));You did MapPath on strURL already. So, it's already a local path, but you pass it to a method that expects a virtual path to convert.

A Simulator for Knuth's MIX Computer

2 Feb 2011 by George Tryfonas

Assembler and Simulator for Don Knuth's MIX Computer from The Art of Computer Programming.

about onscreen keyboard and a third party tool

15 Oct 2013 by JL_Coder

Hello. I have one third party tool, which is an authoring tool/software to create e-learning contents. In which I want to add one onscreen keyboard when a students clicks on a textbox to write. How can do? I heard about tinymce software. Can it be done using it?

access files outside of App virtual directory

25 Nov 2014 by Member 11058906

Hi,MVC 4 C# app, I need to allow users to access files from folders that are out the virtual directory, files are created by another app every month.1. I do not want user see physical path of files likefile1Could you...

access files outside of App virtual directory

25 Nov 2014 by Zoltán Zörgő

Technically you can do that with file:// protocol, but with one condition: this url will point to a local resource - with othe words a resource visible from client side. Sometimes you might need to do that, for example in an enterprise environment. But in general, when you don't know anything...

Access to the path is denied. in Godaddy VPS Server

28 Dec 2013 by NAGESH SRIVASTAVA

Server Error in '/' Application.Access to the path 'C:\Inetpub\vhosts\sssinfracity.com\httpdocs\Reports\Logistics_Report_by_Employee_on_12_29_2013.pdf' is denied.Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for...

Access to the path is denied. in Godaddy VPS Server

29 Dec 2013 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Quote:[UnauthorizedAccessExcep...

ASP.NET in virtual classroom

12 Nov 2013 by Sergey Alexandrovich Kryukov

Yes, ASP.NET can be well used to create a virtual classroom. The question is so vague, so that's all. If you have some particular problem, feel free to ask your questions.—SA

Autocomplete TextBox with Google Hindi Virtual Keyboard

26 Jan 2014 by Member 9066404

Hello sir/madamI am designing my own Email System like Gmail. In this I want to use word prediction technique in Compose mail TextBox.I mean when Someone type something in compose mail textbox ,it should automatically retrieve values from database.That's fine,, With PHYSICAL...

Azure’s New Private Subnet

5 Jan 2024 by Wessel Beulink

Microsoft Azure enhances security with private subnets, fostering efficient network management.

Bluetooth in MFC ( Create Virtual Com port )

6 Sep 2012 by mauver_

Hello. I try to connect PIC Bluetooth Module with MFC.I reference this site.http://msdn.microsoft.com/en-us/library/ms881004msdn used PORTEMUPortParams structure.but MFC is not having this structure.help me plzI need to guide about Creating Virtual Com Port

Bluetooth in MFC ( Create Virtual Com port )

6 Sep 2012 by Richard MacCutchan

See the documentation for PORTEMUPortParams[^]. You need to include the header file containing the definition.

C# virtual webcam for skype

26 Oct 2012 by Member 9548682

Hi,I want to create a virtual webcam to use in Skype, Messenger,... like ManyCam. I can take the images from my webcam, but i can't make a "virtual" webcam device.How i can do??Thanks,

C# virtual webcam for skype

26 Oct 2012 by Maxim Kartavenkov

Hello,DirectShow Virtual Video Capture Source Filter in C#[^]Regards,Maxim.

C++ Runtime Polymorphism without Virtual Functions

5 Jan 2014 by Richard Tauber

Implementing dynamic polymorphism without virtual functions and sharing objects across process boundaries.

C++ Virtual-Array Implementation that is Backed by the Combined Video Memory of User-System

15 Mar 2021 by tugrulGtx

Header-only C++ tool that supports basic array-like usage pattern and uses multiple graphics cards in system as storage with LRU caching

Can we attach earphone in mobile while using VR box?

17 Sep 2016 by OriginalGriff

Ask the manufacturer, not us. They will have a much better idea - particularly as it will probably vary from mobile to mobile, and VR box to VR box...

Can we attach earphone in mobile while using VR box?

17 Sep 2016 by Dave Kreskowiak

Why are you asking us?How about you TRY IT and see what happens.

Can we attach earphone in mobile while using VR box?

17 Sep 2016 by Karthik_Mahalingam

write here Contact us - VRbox[^]

Capturing Data from a Tektronix 1230 Logic Analyzer by Emulating a Parallel Port Printer

8 May 2023 by ToughDev

Emulate parallel port printer to capture data from Tektronix 1230 Logic Analyzer

choosing topic for doing project on virtual honeypots

23 Feb 2011 by abhinayagopalam

hie...i am very much interested in networking..i want to do project on honeypots...total span of project is 3 months...i want to do something new implementation for the present virtual honeypots....right now i am pursuing my btech 3rd year ... please help me out finding topic and title...

choosing topic for doing project on virtual honeypots

23 Feb 2011 by Haechtsuppe

I can't see a questionmark in your text, so whats the question?You need a project for your final exams of education, right?The title could be "Integrating a honeypot in the local infrastructure (for preventing industrial spying)"Try to describe your project very exactly, the examiner...

choosing topic for doing project on virtual honeypots

23 Feb 2011 by LaxmikantYadav

Hi abhinayagopalam,In your virtual honeypots you can include following topics..A) Packet Analyzer Which will give you the all information about packets which are routing in the network.B) Intrusion Detection System(IDS) This system will detect all the Dos Attack and will...

Creating a Virtual Keyboard

26 Jul 2011 by Member 8112150

Hi,I need to create a virtual keyboard using MFC.i am a newbie and have no clue as to how i should start.

Creating a Virtual Keyboard

26 Jul 2011 by వేంకటనారాయణ(venkatmakam)

Codeproject:...

Creating a Virtual Keyboard

26 Jul 2011 by RaviRanjanKr

There is a same question on CP with solution.Take a look there-CP Question[^]

Creating a Virtual Keyboard

27 Jul 2011 by Sergey Alexandrovich Kryukov

There are two keys points here, if you want the real Virtual Keyboard which would work system-wide.For emulation of keyboard input, use Windows API SendInput, see http://msdn.microsoft.com/en-us/library/ms646310(v=vs.85).aspx[^].Now the big problem is that you need to have a keyboard...

Developer Docker Tool Configuration

18 Oct 2018 by Santosh Vijay Patil

Configuring Developer Docker Tool to use BYOD VM as your Docker Host/Machine

display numeric virtual keyboard after clicking textbox in asp.net

20 Jan 2013 by Sandeep Mewara

It does not work like this here.Here is what is expected of enquirers:1. TRY first what you want to do! You may find that it's not that hard.2. Formulate what was done by you that looks like an issue/not working. Try them and tell if you face issues.Members will be more than happy...

Does MVC utilise the keyword 'virtual' differently to a C# webForm application?

20 Nov 2014 by Grant Weatherston

I've heard a lot about lazy loading in MVC (i'm completely new to MVC btw), and alot say you utilise the virutal keyword on properties you wish to lazy load from Entity Framework.can anyone explain does that mean the virtual keyword has a different meaning in MVC than in standard application...

Does MVC utilise the keyword 'virtual' differently to a C# webForm application?

20 Nov 2014 by Fredrik Bornander

By making the properties virtual, entity framework can conjure up dynamic proxies for your objects, and through the overridden properties support lazy loading.The virtual keyword does not have a different meaning, it just allows the framework to manipulate your object in a way that allows...

Does MVC utilise the keyword 'virtual' differently to a C# webForm application?

20 Nov 2014 by Raul Iloc

1.Lazy loading related with EF does not depends on MVC. You could find details about it in the next link: http://msdn.microsoft.com/en-us/library/vstudio/dd456846(v=vs.100).aspx[^]Or if you want info about "Lazy Loading" in general here is a good article: Can you explain Lazy...

Export virtualized datagrid to excel

8 Apr 2013 by Wassim Brahim

How To export virtualized DataGrid to Excel ??

Exporting C++ Classes with Virtual Functions Selectively

18 Nov 2012 by mcrawley

I would like to reduce the number of C++ class methods exported from a DLL that show up in the list of exported symbols with mangled names. This is an effort to reduce the size of C++ assemblies. Virtual functions implemented/overriden in a derived class can be accessed from a reference to...

Exporting C++ Classes with Virtual Functions Selectively

18 Nov 2012 by Eugen Podsypalnikov

Maybe it would be possible to export only some interfaces(with needed functionality-aggregation(s) by (smart-)pointers) ? :)// Header to be "exported" :)class CInsideClass; // public CInsiderBase, public ...typedef std::auto_ptr CSafeInsider;class...

Finding the type of an object in C++?

13 Jan 2017 by YznIT

Hej :)How can i detect the class type of a specific object in c++ or What is the best way to find out which type the object is on my array ?For example what if i want to set a new age for all the cats only without knowing there positions(index) in the array.And please write the...

Finding the type of an object in C++?

13 Jan 2017 by Richard MacCutchan

C++ does not have any mechanism for detecting class types at runtime. You would need to add some extra properties to your classes. Alternatively there are some third-party libraries that may help; Google for "C++ reflection".Thanks to Carlo, I now know the correct answer.

Finding the type of an object in C++?

12 Jan 2017 by nv3

You have a couple of alternatives:(a) Adding you own type field to the base classclass Animal{public: int m_type; ...}That is not very object oriented and would be my last resort.(b) Use the run-time type information system of C++: Cat* pCat =...

Finding the type of an object in C++?

13 Jan 2017 by CPallini

Have also a look at typeid operator[^].

Generic SQLite Virtual Table Implementation in C++

7 Apr 2013 by Dusan Paulovic

Hello, do you know about any Generic SQLite Virtual Table Implementation in C++?I mean something like pure abstract class (interface) that can wrap around any type of container or some another abstract class (interface) providing data at Row and Column in abstract data table.In other...

HoloLens Development using Visual Studio 2015 and Unity HoloLens Technical Preview

6 Jan 2017 by Mark Vinod Sinnathamby

This post is a tutorial that is complimentary to the session I did, demonstrating the steps of how a simple holographic application can be built and deployed in the HoloLens emulator.

how to create vitual disk

28 Feb 2012 by wengy5233

how to create a virtual disk within a file and mounts it as a real disk（c language）

how to create vitual disk

28 Feb 2012 by OriginalGriff

Um. You do realize that this isn't a five minute job?Here is a C++ example: How to develop a virtual disk for Windows[^]

How Can I Rename A Registry Key

13 Aug 2014 by Member 11011736

Hello everyone,fist of i want to say is that am using visual studio's as my application maker and using virtual basic as my language, am currently having to make a application as a school project that i need to turn in this Friday so any help will be appreciate it the application has 5...

How Can I Rename A Registry Key

13 Aug 2014 by Richard MacCutchan

There is no simple way by programming to rename a registry key. You would have to create a new key, copy the subkeys and values from the old one to the new one, and delete the old key and its content. This seems like quite an advanced test for a school project, especially given your comments...

how capture printer data before print ,parsing and edit the data then send it to printer?any c#sample would be great

11 Jul 2015 by salam_dust_man

hi everyone;i'm looking for source code or sample that get printer data before print (capture printer output) put it in variable and change some values then print it in form.any idea how to get data and put it into variable for special purpose.

how capture printer data before print ,parsing and edit the data then send it to printer?any c#sample would be great

10 Jul 2015 by Dave Kreskowiak

Well, you're going to have to write your own Notepad then."Intercepting" the print job and editing it is an extraordinarily complex way to do what amounts to Mail Merge.The application describes what the page image looks like to the print driver. The driver takes that "image" and...

How do I a touch screen click without moving my mouse position. Autohotkey script

30 Jul 2016 by Member 12661920

I have two monitors one is a touch screen, i want doing a click one my touch screen without moving the mouse position (pointer)is there a simple autohotkey script that it return to previous position of mouse.i use keystarter 1.0 software you can make in 3d a list of button icons with...

How do I share my wifi router with a debian VM on hyper-V?

16 Sep 2016 by Brady Kelly

I've added an external network switch to Hyper-V that connects to my wifi router. Then, when I install Debian, and set the network adaptor during install, Debian still has no internet access at all. Is there a task or settings I am missing or something?What I have tried:I have tried...

How to access Virtual Tech Summit

28 Sep 2011 by piripitsis

Hello,I signed up for a Code Project Virtual Tech Summit (HTML5, CSS3 & JavaScript) and i can't find where to go to access it?Any ideas?Thanks

How to access Virtual Tech Summit

28 Sep 2011 by Arun Jacob

Cross Post:http://www.codeproject.com/Lounge.aspx?msg=4037276#xx4037276xx[^]

How to add a on-screen keyboard to windows form application

12 Oct 2021 by Ali Majed HA

HelloI am coding a Windows Form Application and I need to active an on-screen keyboard by pressing a key. I have tried applications like Hot Virtual Keyboard but the problem is when I activate keyboard, some part of my application form wull be hidden under the keyboard application. I need to...

How to add a on-screen keyboard to windows form application

19 Sep 2016 by Alex Banu

Take a look at: How to Use Windows On Screen Keyboard in C# WinForms - Stack Overflow[^]

how to check app running in a virtual machine

24 Sep 2013 by tenderzs

i have writed an app with c#,i want my app can not running in a virtual machine,such as,vmware,virtual boxthanks

machine-learning

How to Completely Detach VHD file only using Safely Remove Hardware option

12 Jun 2013 by gssajith87

Hi,I have a virtual harddisk file created using a backup software., i was able to attach the file in disk-management [2008 R2] to view the files., When i right clicked the disk management Disk# section, it does not show me, detach option, it just showed me up the offline option. I made the...

virtual-machine

How to create a C++ decorator function without using virtual

11 Jul 2019 by Member 13608791

I'll paste my code below: #include using namespace std; class Smoothy{ private: int price; public: int getPrice(){ return price; } virtual ~Smoothy() = default; virtual string description() = 0; }; class BasicSmoothy: public Smoothy{ private: string...

How to create a C++ decorator function without using virtual

11 Jul 2019 by Stefan_Lang

If you can't use virtual functions, where's your point in using the decorator pattern?? Just store the description and price of each ingredient in a simple struct and create a list or std::vector to hold the ingredients. Problem solved. If you have a specific reason to use the decorator...

How to create a Virtual MIDI Port

18 Feb 2013 by MGreatwolf

Hi,I am trying to track down information that would help explain how to create a virtual MIDI port similar to LoopBe1 (www.nerds.de). My development environment is Visual Studio 2010 and I am most familiar with C++. LoopBe1 is an awesome program and I have/am using today but now I want to...

How to create a Virtual MIDI Port

18 Feb 2013 by jeron1

Possibly this[^] SDK will help.

How to create a Virtual MIDI Port

11 Mar 2013 by MGreatwolf

Thanks, but that is more of an SDK to use a driver that Tobias has already developed.

How to make a Virtual Audio Cable from WDK MSVAD samples ?

14 Oct 2013 by wise.bear

You need to take a look at the Virtual sound card SDK

How to make a Virtual Audio Cable from WDK MSVAD samples ?

14 Oct 2013 by wise.bear

Take a look at the virtual sound card sdk

How to send emails to a directory with Microsoft SMTP Virtual Server (eml files)?

2 Jul 2012 by arielbeck

Hello, i have an issue:i have Microsoft SMTP Virtual Server, which listens to smtp requests.Each requests, needs to be passed to a directory, instead of passing it to a mail server.i've used the "Smart host" and declared a dummy domain, thus, the files are staying at the "Queue"...

How to send emails to a directory with Microsoft SMTP Virtual Server (eml files)?

2 Jul 2012 by TorstenH.

Think again. False approach. It can't work out if you try to rip a file of another process.Just to get it straight: You need a handle on the emails waiting to be send in the queue?There must be hook to tell the SMTP to drop the message instead of sending it.

How-to: Benefit from Kinect.Toolbox and Coding4Fun on Kinect Programming

19 Nov 2012 by Saad Mousliki

The use of Kinect.Toolbox and Coding4Fun APIs could save time on Kinect programming this is what we will see in this article and also how to modify those APIs and use it

Hyper-V and Hardware Assisted Virtualization

7 May 2023 by ToughDev

Hyper-V & Hardware Assisted Virtualization

virtual-machine

i am getting an error while deleting some files on VAX VM

23 Mar 2014 by abhitechno

My company is still running VAX VMS 5.5-2. My moron boss has accidentally created a huge file named "H:\BCS02\VAX\BCS02_SYSD.bck" and now i am unable to delete it. "dir" command is listing the file along with size and all other specifications but all other commands including "delete"is refusing...

I need to implement inheritance and abstract class functions my C++ rpg fantasy combat program. What are some suggestions for enhancing the code?

16 Dec 2021 by Gabriel Sharp

Here is the code for the project, I need to work at implementing inheritance for it. I would like to have some virtual functions and make it a class driven program which uses derived classes and has a base class. The derived clase should inherit...

I need to implement inheritance and abstract class functions my C++ rpg fantasy combat program. What are some suggestions for enhancing the code?

15 Dec 2021 by OriginalGriff

To be honest, I'm not going to go into details because that would mean a close inspection of that code, and what I can see from a cursory glance is that it's ... pretty poor quality. It's pretty much monolithic, it's full of duplicated code and...

I need to implement inheritance and abstract class functions my C++ rpg fantasy combat program. What are some suggestions for enhancing the code?

16 Dec 2021 by Greg Utas

Once you're finished converting this code to classes, you should have learned that you should design that way from the beginning. Rewriting the code later is a lot of work and is prone to error as you cut and paste fragments into various classes,...

IIS Physical Path VS Virtual Path

26 Sep 2016 by Shamim Uddin

In this tip, we will discuss the differences between IIS Physical path & IIS Virtual path.

Implement Virtual List with Paged Data

3 Jan 2013 by Young Ye

This article solve the performance issue while loading and displaying large amounts of data by using a virtual list with paged data technique.

In which scenario,i should declare a method as virtual in c#

7 Aug 2013 by microkbr

hi,I am new to .net so please let me clear my doubt .i wanted to know the scenarios where i have to declare my method as virtual.otherwise it will not work.

In which scenario,i should declare a method as virtual in c#

7 Aug 2013 by Raghuveer Kasyap

Hi,Define the Virtual methods only in the case if the methods are to be overridden in the derived classes as per their behavior. For an example the shape class can have Draw method. The Circle, Rectangle classes which derived from the Shape class can override the Draw method.Regards,Raghu

In which scenario,i should declare a method as virtual in c#

8 Aug 2013 by Srinivas Kalabarigi

In polymorphism we have method overloading and method overriding.Method overloading is the process of creating new method with same name but different signature.Method overriding is the process of creating new method with same name and same signature but in a derived class.In method...

In which scenario,i should declare a method as virtual in c#

8 Aug 2013 by adriancs

class Class1{ public virtual int GetNumber() { return 1; }}class Class2 : Class1{ public override int GetNumber() { int i = base.GetNumber(); return i + 1; }}private void button1_Click(object sender, EventArgs e){ Class1...

In-line serial data modification

15 Nov 2011 by ryykker

Hello,Summ...

Is it possible to run oculus rift with Intel HD 4600?

26 May 2016 by Dzianis Igaravich Leanenka

Hello to everyone!I try to install oculus rift dk2 and I have troubles after I have installed all the required soft. Oculus demands amd or nvidia graphics. Is there a walking around way to run oculus sdk with intel hd?What I have tried:I have tried google search)) but I have found...

Is it possible to run oculus rift with Intel HD 4600?

26 May 2016 by Dave Kreskowiak

Given the performance requirements of the Rift, I'd say, no you can't. The Intel graphics chip just doesn't have the performance to generate a decent frame rate.EDIT:After doing a search for "Oculus Rift Intel Graphics" it does work, but you'd have to lower the graphics settings in games...

Is there any thing call EFI interrupts? and switching to VESA in 64Bit?

2 Oct 2013 by sid2x

I was just programming some stuff in ASM, until I got to know that VGA is limited to 640x480 resolution, (I hate VGA), then I was thinking about VESA/VBE, since in OS Development people use VESA more that VBE (To what I have seen), I wanted to switch to VESA, but I couldn't find anything...

Make a downloadable Hperlink field in Gridview using Physical path

24 Nov 2013 by Kunal Ved

I want to set a download link in my gridview , the thing is that I have set a physical path while Uploading the file and saving the file name and its pyshical path in the databaseif (fileUpTimeTable.HasFile){ string TimeTableFileName = fileUpTimeTable.FileName; string...

Make a downloadable Hperlink field in Gridview using Physical path

24 Nov 2013 by Sergey Alexandrovich Kryukov

A Web site has nothing to do with "Project Solutions" (what is it, by the way?). Project and solutions are just the artifact of development, they don't exist after you deploy the site code. The thing is: yes, the code-behind code needs what you call "physical paths"; more exactly, file path...

not able to change size of mfc virtual list control header

30 Apr 2013 by P Uday kishore

i am working on on to save the column width of a list control,but in my list control we used as virtual list control so am not able to update the column width.can we have any other option to increase or decrease the column width of virtual list control.

not able to change size of mfc virtual list control header

30 Apr 2013 by Leo Chapiro

Take a look: VC++ MFC Tutorial: CListCtrl, InsertItem, Using List Control, SetImageList, Article with source code[^]>can we have any other option to increase or decrease the column width of virtual list control.Yes, we can:// The pointer to my list view control.extern CListCtrl*...

Out of Memory in Visual Studio

27 Aug 2012 by Shweta Lodha

The "ResolveManifestFiles" task failed unexpectedly. System.OutOfMemoryException: Insufficient memory to continue the execution of the program.

problem configurating mstsc "Virtual Channel Client Registration"

26 Jan 2012 by arielbeck

hello guys,i've written client and server to use on a remote desktop session.when i update registry:[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Terminal Server Client\Default\AddIns\MyAddin]"Name"="path to my DLL"when i connect, client calls are passed to the server, everything works...