Best C++/MFC article of July 2011

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Each month at CodeProject we gather together the best of the articles submitted the previous month and ask our readers to choose the best of the best. Entry is automatic - just submit you articke and we'll do the rest.

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Current Entries

Articles that match the contest criteria are automatically entered. The top 50 entries are shown.

Good Old & Dirty printf() Debugging in a Non-console C/C++ Application or DLL

25 Jul 2012

pasztorpisti

2 alternatives

How to open a console in a non-console C/C++ application or DLL and make printf/scanf work (stdin/stdout/stderr related functions)

C++

Windows

direct memory address to a pointer

18 Jul 2011

Sergey Alexandrovich Kryukov

You can do it: int * p2 = reinterpret_cast(0x22fefc);//C-style cast:int * p1 = (int*)0x22fefc;//easy to check-up: p1==p2, but de-referencing them could be a problem :-)The result depends on the platform. On most modern platforms is would looks like some random...

C++

Ribbon with C++, Post 6: Ribbon Dynamic Structure Capabilities

22 Jul 2011

Arik Poznanski

In this post, we will dive into the ribbon's dynamic structure capabilities, i.e., we will learn about the different ways to change the structure of the ribbon at runtime.

C++

Thanks peeps for giving my Post ALOT of ATTENTION Celebrity Post I am having a problem writing this program

1 Jul 2011

Sugato Pal

I just dont understand what is it..This is not a coaching class.You may be copy pasted your summer vacation hometask...My God!!!So as a solution i can only say please take help from your teacher...or consult any book..

C++

Code of the "Online tutor " project?

8 Jul 2011

#realJSOP

This should explain it[^]

C with Win32 or VC++ with MFC for Career

25 Jul 2011

Sergey Alexandrovich Kryukov

kiranbhatter wrote:Sometimes I really feel like I have chosen a wrong path while learning C, Win32.I think your whole approach is wrong. This is not a "path". There are things you need to know regardless of your "path". However, it depends on what do you want to become. Do you want to reach...

C++

MFC

Win32

Remind review in iPhone apps

12 Dec 2013

Cloud Hsu

How to remind review in iPhone App

Objective-C

iPhone

Mobile

question about abstract class

7 Jul 2011

Christian Graus

An abstract class is, well, abstract.This[^] is what I did when I was learning.Why use it ? Because it acts like an interface. It defines what a child class needs to do, but perhaps has no value on it's own. For example, a fruit class might be useless, because you always want a TYPE of...

C++

What are the basic and primary concepts to learn in VC++?

14 Jul 2011

Pete O'Hanlon

If you don't know C++ (heck, even if you do), I'd recommend buying Effective C++ by Scott Meyers. This is THE book to teach you C++. Don't worry too much at this stage about having to pick a specific flavour of the language. Get the basics under your belt first, and then look to pick up the...

C++

VC8.0

how to be a pro programmer using C++ and JAVA

19 Jul 2011

Abhinav S

Well you can start writing some code and practicing.One day, you will get there!

Java

C++

how to be a pro programmer using C++ and JAVA

19 Jul 2011

thatraja

Here more than couple of ways to learn things in webEducation Needed[^]Also try to start write from simple "Hello world" code to small, big programs.

Java

C++

Ribbon with C++, Part 5: Using Galleries with Windows Ribbon Framework

22 Jul 2011

Arik Poznanski

In this post, we continue our exploration of the Windows Ribbon Framework, this time focusing on Gallery controls.

C++

problem with the vector in the c++ under the windows platform

22 Jul 2011

Stefan_Lang

Apart from what PrafullaVedante said, you are also needlessly creating a struct on the heap, and then forgot to delete it. Just create it on the stack like this: myvec = new vector; // { myStruct mystr; //

C++

Function already referenced .. but where?

26 Jul 2011

Stefan_Lang

Looks like you defined the functions right in your header. For example, like this:// file foo.hvoid foo() { puts "Hello World!");}// file foo.cpp#include "foo.h"//file bar.cpp#include "foo.h"Note that #include is a preprocessor command, causing the preprocessor to copy the...

C++

About Inherit in C++

30 Jul 2011

«_Superman_»

Add a default constructor to the CExchangeRate class - CExchangeRate(void);

C++

inheritance

Access violation error for a simple code

5 Jul 2011

Rajesh R Subramanian

char *p = "hello";char pArr[] = "Hello";The above two are not the same. When you declare it as a pointer and initialize it with a value, the compiler puts it in the Data Segment[^], AND in the "Initialised and read only" area. When you try to change contents stored in this section, it...

C++

Stupid and basic, but still bothering me

8 Jul 2011

CPallini

You would have a minimal code using C++, via, for instance MFC/ATL CImage or directly using GDI+. If you instead want to go 'to the metal' then things are a bit more complex, see, for instance, the following code sample Scaling an image[^].However you try use the following code inside the...

C++

Windows

Pipe/Fork in C (win32)

25 Jul 2011

Sergey Alexandrovich Kryukov

Pipes for IPC? Use Named Pipes: http://msdn.microsoft.com/en-us/library/aa365590%28v=vs.85%29.aspx[^].[EDIT]Find some Named Pipe samples here: http://msdn.microsoft.com/en-us/library/aa365799%28v=vs.85%29.aspx[^].[END EDIT]For threading, use Thread functions, see...

C++

Windows

Win32

C with Win32 or VC++ with MFC for Career

24 Jul 2011

OriginalGriff

C and Win32 are used a lot less these days - except for maintenance - C++ and MFC are more common, but also dated.C# or C++ and .NET are a lot more common these days, and may be a better investment.Having said that, if you are good at C and Win32, and can live with maintenance rather...

C++

MFC

Win32

What will be output?

1 Jul 2011

Christian Graus

You've been asked this as a homework question. You can also just compile and run it to find the output and use the debugger to 'explain' it. We don't do homework for people who won't even try.

Write a program to find the minimal positive integer number Q so that the product of digits of Q is exactly equal to N in C language

3 Jul 2011

#realJSOP

We don't do homework for people - not because we feel like we're elite or too important, but because YOU won't learn anything if we do it for you. If you try to do it and have a problem with a particular part of the code, come back here and ask a question about THAT particular part of the code -...

HOW TO DEVELOPE A WALL CLOCK BY CONTROLLING,CODEING,SHAPE DESIGNING AND COLOURING.

10 Jul 2011

Christian Graus

Well, a wall clock, goes on the wall. So, you can either buy a clock mechanism and just make the face, or you can go to Switzerland, and learn the fine art of clockmaking. I'm not sure why you think anyone here can help with that. I assume if you meant how to write a program, you'd tell us...

this question has been deleted

10 Jul 2011

Sergey Alexandrovich Kryukov

When you write "You should write a small webserver…", who should write it? I thing you should. Are you too lazy to re-formulate the text to make a question out of it? It looks like you simply pasted a copy of the text given to you.You need to begin with learning programming,...

project topic on barcode generation

7 Jul 2011

Espen Harlinn

If you want to ensure that scanners will be able to read the barcodes, use a barcode printer[^].Otherwise you can use a library like Barcode Image Generation Library[^] Here is some info on scanning: Barcode scanning[^]Best regardsEspen Harlinn

C++

send pointer to function

10 Jul 2011

Richard MacCutchan

You should also realise that on return from fun you will be back to your original p1 and p2 which are uninitialised. To achieve what you are trying to do you should send p1 and p2 as references, or add another level of indirection thus:void fun(int*& p1, int*& p2, int&s){int...

C++

What are the basic and primary concepts to learn in VC++?

13 Jul 2011

Sergey Alexandrovich Kryukov

Most primary concept is being C++; being VC++ is secondary. Think which one do you want to learn. :-)—SA

C++

VC8.0

What are the basic and primary concepts to learn in VC++?

13 Jul 2011

Richard MacCutchan

Forget VC++, there is no such thing. The language is C++, designed by Bjarne Stroustrup[^]. If you want to learn in depth then all the information you need is on his website. You can also look at the MSDN reference[^], use Google to search for free tutorials, or buy a book.

C++

VC8.0

Crashing while deleting

14 Jul 2011

CPallini

you are using temp.clientData as an array but you didn't allocate memory for it.Namely, in the posted code you should change temp.clientData = new licenseClient*;totemp.clientData = new licenseClient*[3];

C++

Can't find description for specific c++ operators

15 Jul 2011

«_Superman_»

Here are the documentation links -Scope Resolution Operator: ::[^]Member Access Operators: . and ->[^]Here is a link for all C++ Operators[^].

C++

debug exe file with parameters

18 Jul 2011

వేంకటనారాయణ(venkatmakam)

You can pass the command line arguments from the IDE as follows,Goto Project->Properties.1. Expand configure properties section.2. Goto Debug section.3. Give the command line arguments in "Command Arguments" edit box.

C++

Visual-Studio

VS2008

how to be a pro programmer using C++ and JAVA

20 Jul 2011

Nagy Vilmos

Read. Read a lot.You will gain a great deal just from this site by reading articles, look for highly rated ones by good authors, and working through what was done.Read the documentation for the languages you are interested in so you can understand how and why they are structured that...

Java

C++

Please explain the following function

24 Jul 2011

Emilio Garavaglia

I's the definition of an overloaded operator[^]

C++

Checking for Internet Connection in VC++

29 Jul 2011

Sayyed Mostafa Hashemi

Code for checking the avilabiltiy of Internet connection.

Code of the "Online tutor " project?

8 Jul 2011

Christian Graus

1 - please don't press 'answer' to add comments. There's a comment button, see it ? Second, you shouted when you typed all in capitals. That's what was meant, THIS IS SHOUTING. Third, you listed just about every sort of language known to man, that's not a sign that you have any knowledge,...

DLL injection preventer

17 Jul 2011

Espen Harlinn

Nothing short of a rootkit can prevent a programmer from loading dll's into another process on his machine - and a good programmer can circumvent that too. I'm fairly certain that this is not the best way to solve your problem. If this is for an online solution, cheating should be prevented...

C++

Visual-Studio

in c programming and c

24 Jul 2011

Mohibur Rashid

First thing firstCPP is OO and C is structure orientedin general compiler judge the code type with file extension. File with .c extension will not compiled as cpp.Almost all c style code is excepted in cpp.except 1) type casting. example: char *arr; ...

C++

C with Win32 or VC++ with MFC for Career

24 Jul 2011

Mohibur Rashid

Dont worry .net seems future. But microsoft knows that they didnt give us the ultimate solution yet, soon they will give you another solution and .net will be back dated again. But C/C++ is immortal, cause its not their ............

C++

MFC

Win32

How to get the ipaddress of the system by using c

6 Jul 2011

Sergey Alexandrovich Kryukov

Here is the sample code solving this problem: http://stackoverflow.com/questions/212528/linux-c-get-the-ip-address-of-local-computer[^].Have you been banned by Google? :-)—SA

this question has been deleted

10 Jul 2011

Christian Graus

See how what you posted is a list of instructions ? This is because it is your homework. It does not sound to me like beginner homework, are you taking this class ? If you are and you are new to C, that seems insane. Either way, we're not going to do this for you.

SFTP implementation in c

13 Jul 2011

CPallini

Read the specifications[^] and go, go!

how to pass the arugument to the threads in c under windows

13 Jul 2011

Joan M

aimdharma... aren't you tired of downvotes and people asking you to work a little bit your questions?Take a look at this link[^]... you will see how to do it there...It seems stupid to me that you son't even bother to search google... At the end you'll be banned and then there won't be...

access private members in derived class

10 Jul 2011

Sergey Alexandrovich Kryukov

This is not true: "private members doesn't Derive". This is not even false, just makes no sense. :-)A member can not "derive", only a type can. All members are inherited, no exclusions.—SA

C++

Debugging in general

12 Jul 2011

Dr.Walt Fair, PE

This[^] should get you started.

Catch 22 - Pointers to interface objects die when function using them is made static.

12 Jul 2011

Sergey Alexandrovich Kryukov

I think your problem is here: "It's necessity of the programmer to make it public & static, so that it is callable without creating object of class."This is a misconception. To understand it, learn how Singleton design pattern...

C++

Debugging in general

13 Jul 2011

Albert Holguin

Here's a decent article that talks about debugging in Studio:Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]There are also several MFC macros that are available for debugging (TRACE being very, very useful):Useful Debugging Macros[^]

how ++n and n++ differ ?

13 Jul 2011

John R. Shaw

n = ++i; // #1 : assigns i to n after adding 1 to in = i++; // #2 : assigns i to n before adding 1 to iwhich is better?++i should be preferred over i++; I believe Stroustrup, Myers and others have stated this in various books and/or post.The reason we preferred this in C...

C++

Character representation in languages such as chinese in C++

15 Jul 2011

Espen Harlinn

Take a look at ICU:ICU - International Components for Unicode[^]The ICU libraries, provides first class support for Unicode[^], while wchar_t[^] only provides support for wider character encodings.You can encode chineese characters in UTF-8, UTF-16, UCS-32, GB 18030, Code page 936, and...

C++

Draw a filled Rectangle using OpenGL

15 Jul 2011

Pete O'Hanlon

This is such a common requirement for OpenGL that they have provided the glRect that does exactly this. Microsoft have provided several versions of this function[^] that take different data types to specify the bounds of the rectangle.

C++

VC6

OpenGL

Is std::vector thread safe ?

18 Jul 2011

Richard MacCutchan

See this discussion[^] in MSDN.

C++

threads

hide program from Task Manager

18 Jul 2011

OriginalGriff

Combined with your other question How do I know if there is a computer camera?[^] I find myself wondering exactly what you are trying to do. I can't easily see any legitimate application which uses a PC camera and wants to hide.I can however see quite a few illegitimate applications, and...

C++

Current Participants

Those with articles that match the contest criteria are automatically entered.

#realJSOP

	Software Developer (Senior) Paddedwall Software
	United States

I've been paid as a programmer since 1982 with experience in Pascal, and C++ (both self-taught), and began writing Windows programs in 1991 using Visual C++ and MFC. In the 2nd half of 2007, I started writing C# Windows Forms and ASP.Net applications, and have since done WPF, Silverlight, WCF, web services, and Windows services.

My weakest point is that my moments of clarity are too brief to hold a meaningful conversation that requires more than 30 seconds to complete. Thankfully, grunts of agreement are all that is required to conduct most discussions without committing to any particular belief system.

«_Superman_»

	Architect
	India

Santosh works as a Technical Architect in God's own Country, Kerala, India. He has been involved with C/C++ since 1996. Started with a few game clones and then went on to commercial software. He started his stint with software training and then went on to professional software development, design and architecture. Unix and C were his favorite in his early days but later grew very fond of Windows especially with the release of Windows NT 4.0 and Visual C++ 6.0. Technologies like COM and .Net fascinate him. He still lurks around Unix once in a while.

Music and the guitar are his second favorites and he manages to impress his friends with these skills when there are nobody better than him around. He is a patient and fun loving character who does not think too much about the future. He hates wasting time and so is working hard (in his dreams) to perfect instant transportation and time travel.

Oh! Yes. He loves Superman. Always did and always will. He would love to become a Superman and rid the world of all evil.

He used to be a Microsoft Visual C++ MVP (October 2009 - September 2013)

Emilio Garavaglia

	Architect
	Italy

Born and living in Milan (Italy), I'm an engineer in electronics actually working in the ICT department of an important oil/gas & energy company as responsible for planning and engineering of ICT infrastructures.
Interested in programming since the '70s, today I still define architectures for the ICT, deploying dedicated specific client application for engineering purposes, working with C++, MFC, STL, and recently also C# and D.

Abhinav S

	Software Developer (Senior)
	India

Albert Holguin

	Engineer
	United States

I'm an angry monkey. Big Grin | :-D

Arik Poznanski

	Software Developer (Senior) Verint
	Israel

Arik Poznanski is a senior software developer at Verint. He completed two B.Sc. degrees in Mathematics & Computer Science, summa cum laude, from the Technion in Israel.

Arik has extensive knowledge and experience in many Microsoft technologies, including .NET with C#, WPF, Silverlight, WinForms, Interop, COM/ATL programming, C++ Win32 programming and reverse engineering (assembly, IL).

Christian Graus

	Software Developer (Senior)
	Australia

Programming computers ( self taught ) since about 1984 when I bought my first Apple ][. Was working on a GUI library to interface Win32 to Python, and writing graphics filters in my spare time, and then building n-tiered apps using asp, atl and asp.net in my job at Dytech. After 4 years there, I've started working from home, at first for Code Project and now for a vet telemedicine company. I owned part of a company that sells client education software in the vet market, but we sold that and I worked for the owners for five years before leaving to get away from the travel, and spend more time with my family. I now work for a company here in Hobart, doing all sorts of Microsoft based stuff in C++ and C#, with a lot of T-SQL in the mix.

Cloud Hsu

	Architect SIS
	Taiwan

CloudBox cross-platform framework. (iOS+ Android)
Github: cloudhsu
My APP:
1. Super Baby Pig (iOS+Android)
2. God Lotto (iOS+Android)
2. Ninja Darts (iOS)
3. Fight Bingo (iOS)

CPallini

	Software Developer (Senior) Biotecnica Instruments S.p.A.
	Italy

Debugging? Klingons do not debug. Our software does not coddle the weak. Bugs are good for building character in the user.
-- The Klingon programmer

Beelzebub for his friends [^].

Dr.Walt Fair, PE

	Engineer Comport Computing
	United States

No Biography provided

Espen Harlinn

	Architect Ulriken Consulting AS
	Norway

Senior Architect - Ulriken Consulting AS.

Specializing in integrated operations and high performance computing solutions.

I’ve been fooling around with computers since the early eighties, I’ve even done work on CP/M and MP/M.

Wrote my first “real” program on a BBC micro model B based on a series in a magazine at that time. It was fun and I got hooked on this thing called programming ...

A few Highlights:

High performance application server development
Model Driven Architecture and Code generators
Real-Time Distributed Solutions
C, C++, C#, Java, TSQL, PL/SQL, Delphi, ActionScript, Perl, Rexx
Microsoft SQL Server, Oracle RDBMS, IBM DB2, PostGreSQL
AMQP, Apache qpid, RabbitMQ, Microsoft Message Queuing, IBM WebSphereMQ, Oracle TuxidoMQ
Oracle WebLogic, IBM WebSphere
Corba, COM, DCE, WCF
AspenTech InfoPlus.21(IP21), OsiSoft PI

More information about what I do for a living can be found at: harlinn.com or LinkedIn

You can contact me at espen@harlinn.no

Joan M

	Chief Technology Officer robotecnik
	Spain

I'm from Catalonia (in Spain) and a specialist in CNC, PLC, robotics and automation in general.

From 1998 I've been developing software applications for the automation market.

I'm using different technologies in each case to get the proper result, fieldbus communications, special electronics, special laser sensors, artificial vision, robot arms, CNC applications, PLC's...

www.robotecnik.com[^] - robots, CNC and PLC programming

John R. Shaw

	Software Developer (Senior)
	United States

I am a senior software engineer who has been designing and developing software for many years, mostly in C/C++. You might say that I think in code; which is why I am passionate about my first rule of coding: “First do no harm”. So if I get carried away in my explanations, please realize that it is just part of my personality. I enjoy learning new things and, when I have the time, passing that knowledge onto others.

Mohibur Rashid

	Software Developer
	Japan

I wish, I had a stable hobby.

Nagy Vilmos

	President Belligerent Bad Tempered Old Fools Club
	United Kingdom

No Biography provided

OriginalGriff

	CEO
	Wales

Born at an early age, he grew older. At the same time, his hair grew longer, and was tied up behind his head.
Has problems spelling the word "the".
Invented the portable cat-flap.
Currently, has not died yet. Or has he?

Pete O'Hanlon

	CEO
	United Kingdom

A developer for over 30 years, I've been lucky enough to write articles and applications for Code Project as well as the Intel Ultimate Coder - Going Perceptual challenge. I live in the North East of England with 2 wonderful daughters and a wonderful wife.

I am not the Stig, but I do wish I had Lotus Tuned Suspension.

Rajesh R Subramanian

	Software Developer
	Australia

Software developer

Richard MacCutchan

	Retired
	United Kingdom

I was a Software Engineer for 40+ years starting with mainframes, and moving down in scale through midi, UNIX and Windows PCs. I started as an operator in the 1960s, learning assembler programming, before switching to development and graduating to COBOL, Fortran and PLUS (a proprietary language for Univac systems). Later years were a mix of software support and development, using mainly C, C++ and Java on UNIX and Windows systems.

Since retiring I have been learning some of the newer (to me) technologies (C#, .NET, WPF, LINQ, SQL, Python ...) that I never used in my professional life, and am actually able to understand some of them.

I still hope one day to become a real programmer.

Sayyed Mostafa Hashemi

	Software Developer (Senior)
	Iran (Islamic Republic of)

I am Mostafa Hashemi.I was born in Tehran. I graduated from IUMS university in 2002 (1381). Although my university field different from programming, but I like it. Since I acquainted with computer, I have been interested in Visual C++. I have been beginning to program in Visual C++ in 2003.
Thanks,
http://www.sischer.ir

Sergey Alexandrovich Kryukov

	Architect
	United States

No Biography provided

Stefan_Lang

	Software Developer (Senior)
	Switzerland

Graduated at TU Darmstadt in Math & CS, with a heavy focus on CAD/CAM

Programming and designing applications in C++ in the areas AI, real-time programming, client-server applications and CAD/CAM since 1985.

Personal interests: AI, computer graphics, games, reading

Sugato Pal


	India

No Biography provided

thatraja

	Web Developer
	India

No Biography provided

xenotron

	Software Developer (Senior)
	United Kingdom

No Biography provided

వేంకటనారాయణ(venkatmakam)


	India

No Biography provided

	Hatem Mostafa - Real-time Feed Distribution using Circular Shared Queue

Prize pool	Codejock Xtreme ToolkitPro - Codejock Software The latest C++ books from Apress - Apress SmartOutline 2010 - SmartOutline CryptoLicensing For MFC - Enterprise Edition - LogicNP Software CppDepend - supportcpp