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Objective-C

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Guide to WIN32 Regions

by Paul M Watt

Guide to understanding how to create and use regions with the WIN32 SDK

Create An Awesome WPF UI for Your C++/QT Applications

by The Ænema

This article will teach you how to create an amazing, clean and smooth WPF/Winform UI for your native application without using any complex, unsafe, ActiveXish methods, etc.

Using C Calling Convention Callback Functions in C# and VB - The Easy Way

by Jecho Jekov

Provides an easy way to use C calling convention callback functions in C# and VB

CppEvent - How to Implement Events using Standard C++

by Shmuel Zang

This article shows how we can implement a thread-safe events (similar to .NET events) mechanism using the standard C++ library.

Latest Articles

Customize List View Column Headers

by Javad Taheri (drjackool)

Show or hide, reorder, save and restore list view column headers

Universal implementation of BFS, DFS, Dijkstra and A-Star algorithms

by optiklab1

I demonstrate with an actual implementation that well-known algorithms BFS, DFS, Dijkstra, and A-Star are essentially variations of the same algorithm.

Converting between NSString and C Strings in an iOS Project

by ToughDev

How to convert between NSString and C strings in iOS project

Faster than STL

by Ben McNamara

Container classes much faster than STL.

All Articles

Objective C

Guide to WIN32 Regions

10 Mar 2002 by Paul M Watt

Guide to understanding how to create and use regions with the WIN32 SDK

Create An Awesome WPF UI for Your C++/QT Applications

6 Jan 2020 by The Ænema

This article will teach you how to create an amazing, clean and smooth WPF/Winform UI for your native application without using any complex, unsafe, ActiveXish methods, etc.

Using C Calling Convention Callback Functions in C# and VB - The Easy Way

13 Sep 2005 by Jecho Jekov

Provides an easy way to use C calling convention callback functions in C# and VB

CppEvent - How to Implement Events using Standard C++

13 Aug 2018 by Shmuel Zang

This article shows how we can implement a thread-safe events (similar to .NET events) mechanism using the standard C++ library.

Creating Alternate GUI using Vector Art

6 Feb 2000 by Keith Rule

Create visually complex, yet programmatically simple, non-rectangular GUIs

How to Make Your Own Sandbox: Simple Sandbox Explained

2 Oct 2016 by Eugene Balabanov

A tiny sandbox primer

Recursive Internetworking

10 Sep 2018 by Kewin Rausch

Moving forward in the future networks evolution

Text to SVG Path Utility in U++

22 Jun 2021 by Miroslav Fidler

Creating a simple utility for converting text to SVG path in U++

Init Threads in MFC and Win32

17 Oct 2021 by Petrov Vladimir

Starting Threads in MFC and Win32 and some handling samples

multi-threading

Debugger for Arduino

18 Jan 2018 by Jan Dolinay

Source level debugger for Arduino with GDB and Eclipse

Asynchronous TCP Part 1

14 Sep 2018 by bkelly13

Goal: Describe how asynchronous or non-blocking TCP code works

Rodney - A Long Time Coming Autonomous Robot (Part 2)

16 Jan 2019 by Phil Hopley

Second part in a series on a ROS (Robot Operating System) House Bot

CreateRegionFromFile

10 Dec 2001 by Yuriy Zaporozhets

Very primitive function that creates region from *.bmp files

Adding Object Detection with TensorFlow to a Robotics Project

28 Apr 2019 by Phil Hopley

In this article, we will add AI to an existing ROS (Robot Operating System) House Bot.

machine-learning

Rodney - A Long Time Coming Autonomous Robot (Part 3)

17 Jan 2019 by Phil Hopley

Third part in a series on a ROS (Robot Operating System) House Bot

A Monitored, Memory Mapped std::allocator for Mass Data Storage in STL Container

26 May 2020 by stefan stammberger

A novel allocator implementation for managing huge sets of data in STL's std:: containers for Windows operating systems

operating-systems

VB .NET/WinForms: Create Form's MainMenu by Load Menu from Resource-Only DLL

5 Jan 2023 by vblover Programmer

Load Menu from Resource-Only DLL (created by VC++) and Set for Form As MainMenu by API Functions.

Sending WhatsApp Messages from a Win32 C++ Program - Part 1

3 Nov 2018 by Michael Haephrati

A simple way for sending WhatsApp messages to an individual or to a group in C++

Custom Captions (Including Multi-line Captions)

15 Jul 2000 by Dave Lorde

Simple customised Window captions, including multi-line captions

A Programming Model to Use a Thread Pool

30 Sep 2000 by Sherwood Hu

A class to manage the thread pool

MFC Resources Fallback

11 Jul 2007 by Giuseppe Marazzi

A small tip for implementing a fallback resources process with MFC that's useful for localization

Extending Visual Studio to Provide a Colorful Language Editor

20 May 2018 by Eric Lynch

In this article, we explore the implementation of a Visual Studio editor that allows editing of a fictitious "Colorful" language. The editor minimally implements both syntax classification / coloring and IntelliSense completion.

Multi-pass Filter Cutoff Correction

26 Nov 2018 by Jonas Selling

Clarifying the use of multi-pass filter cutoff correction

Run a C Language Interpreter on Your ESP32

31 May 2019 by Rick Lunglhofer

Details the Implementation and use of a C Language Interpreter with a browser Interface running on an ESP32

Audio File Matching Program

21 Jan 2011 by Emilio Garavaglia

Depends on what do you mean with "similar".A binary compare (even with the only raw data) doesn't work, because a same music played in different executions is not necessarily made by the same identical "waves".A method that can give you some success is try to guess suitable periods (a low...

Creating a WCF Service with JSON Data and Using it on iOS

31 Mar 2013 by Melih Mucuk

Creating a WCF Service with JSON data for use on iOS

Universal implementation of BFS, DFS, Dijkstra and A-Star algorithms

15 Sep 2023 by optiklab1

I demonstrate with an actual implementation that well-known algorithms BFS, DFS, Dijkstra, and A-Star are essentially variations of the same algorithm.

Audio File Matching Program

23 Jan 2011 by Sergey Alexandrovich Kryukov

Disclaimer: this is not an answer, because it is impossible to give any definitive answer.My answer is a (very tentative) draft for a whole research program:1) Develop conversion of all files into identical raw format (see answer by Andrew).2) Develop Fourier analysis for a arbitrary...

STL Set Algorithm Operators

16 Jun 2018 by Shao Voon Wong

Overloaded Operators to write concise code on STL Set Algorithms

Basic Cryptographic Protocols: Key Exchange

25 Aug 2018 by Kewin Rausch

Introduction to protocols to manage Key Exchange in secure channels communication

Deploy Node.js Application Running on Microsoft IIS 10 To Docker's Windows Server Core 2016 Containers

1 Sep 2018 by Arthur V. Ratz

In this brief article, we will demonstrate how to deploy a Node.js application and run it on Docker's Windows Server Core 2016 Containers

I want to learn a Second Language.

5 Jul 2013 by Maximilien

You have to look at the application "domain" you are interested in pursuing your career.You want to do some mobile applications, then learning Objective-C might be fun and useful.You want to do some "scientific" (or high performance) applications, then learning C++ could be a good...

Connect ESP32 Board via Browser

7 Apr 2021 by Member 4206974

Board based automation and environment control

Low-level text rendering

14 Sep 2010 by Ohmu

Low-level text rendering in iPhone.

Remind review in iPhone apps

12 Dec 2013 by Cloud Hsu

How to remind review in iPhone App

GPS Walker : Get GPS Data With Your Arduino

6 Aug 2018 by raddevus

Build this circuit and learn how easy it is to grab GPS data and store it on an SD Card. Walk around your neighborhood and then upload data to a map.

Arduino Multitasking Using Loops

13 Dec 2018 by Tareq_Gamal

Simple way to create a Multitasking code for your Arduino project without using any external library.

Fun with YouTube Data API v3 (Public Data) and Kigs Framework

25 Feb 2021 by Stephane Capo

Kigs framework C++ Windows project to retrieve and display what other channels are subscribed by subscribers of a given YouTube channel.

XorShift Jump 101, Part 1: Matrix Multiplication

14 Apr 2020 by Member 4201813

Jump forward/backward procedures for XorShift RNG explained step by step

Any Day of the Week Using the Doomsday Rule

27 Jun 2002 by Paul J. Weiss

C++ implementation of the Doomsday Rule to determine the weekday

XML Class Used to Store or Load Information

11 Feb 2003 by gosh

Serialize information stored as XML

Create a Simple Apple Watch App Using CoreGraphics

14 Oct 2015 by yuetwong

This article shows the steps to create an Apple Watch app that draws a pie chart using CoreGraphics.

UIPopoverPresentationController

15 Nov 2015 by David Lashkhi

Working with UIPopoverPresentationController

reuse: An Object Recycling C++ Class Library

23 Feb 2022 by Michael Sydney Balloni

Recycle objects that are expensive to create and improve the performance of your application

Discover ISAPI. Working with GET-POST Data

15 Jul 2002 by Adrian Bacaianu

That article present a way to retrieve the GET-POST data from a form into an ISAPI extension.

Audio File Matching Program

21 Jan 2011 by Andrew Brock

Since you have listed your platform as iPhone, you have the exciting choice of C, C++ and Objective C programming languages, which are mostly the same thing and can be mixed and matched pretty easily.This is good, because most open source projects are written in C/C++.The basic method...

Hello, I Am Ready to Communicate!

20 Jun 2012 by ThatsAlok

CWinThread with TWO-Way communication using window message

multi-threading

Asynchronous TCP Part 2

29 Mar 2013 by bkelly13

Goal: Describe how asynchronous or non-blocking TCP code works

x64 API Hooker + Disassembler

8 Nov 2018 by Member 13737597

This article shows you how to implement trampolines on x64, introduces the idea of sync and async hooks, and dynamically added runtime filters and loggers.

Slightly Less Costly but Much Usable C++ Reflection with Singular Inheritance Rule

9 Jun 2019 by cassert24

Template code for basic reflection functionalities (e.g., dynamic casting, instance type comparison, class name) with C#-like singular inheritance rule (a.k.a, one-base-multiple-interface rule)

Call Distribution Parameters using Combined Data Points Splicing

31 Mar 2021 by Fedor Naumenko

Find type of distribution and parameters from set of distributed physical values

A purist hello world app: an IPhone project template without .XIB

13 Aug 2010 by Ohmu

A step-by-step Guide to getting a pure code application template.

Audio File Matching Program

23 Jan 2011 by Espen Harlinn

One approach could be to create an audio fragment recognition/matching system based on Hidden Markov Models[^] (HMM), where the audio is considered a piecewise signal.This is an elaboration on SAKryukov's answer, that I think may have some relevance to 3), 4) and 5) Update:As with most...

switch statement error

13 Jul 2011 by Guyverthree

switch (operator) { case 1: { first; break; } default: first;}this needs to be inside a function block, this is why this code is failing to be built.

mutable string in objective c ?

27 Feb 2012 by OriginalGriff

Because the string is immutable, but not the reference. You assigned a new, immutable string to str2 in the third line witrhout changing the content of the original string.

Enabling full-keyboard-access behaviour programmatically

2 Apr 2013 by Bernhard Häussermann

Shows how to programmatically enable full-keyboard-access tabbing behaviour in your Mac OS X application.

I want to learn a Second Language.

5 Jul 2013 by pasztorpisti

It really depends on what you want to work on in the future. If you want to learn a new language "just because" then it really doesn't matter what you choose, you will learn something new with any choice. If you are in the "just because" category then I would recommend python. Python is a...

Intel® HTML5 Tools for developing mobile applications

1 Dec 2013 by Android on Intel

Intel® HTML5 Tools for developing mobile applications

product-showcase

Using CocoaPods on iOS

4 Mar 2014 by Melih Mucuk

Configuring and using CocoaPods on iOS projects.

Reading elements from STL SET on the basis of order of insertion?

27 May 2014 by Stefan_Lang

If insertion order is your problem, you get that with std::vector at no cost, but not with std::set.If memory is your problem, std::vector uses less memory than std::setIf performance is your problem, std::vector is faster than std::setIs there even a single good reason for you to...

initWithContentOfFile..."Expre...

12 Oct 2014 by KarstenK

you must you the keyword "nil". The compiler distinguishes between the integer value "NULL" and the null pointer "nil". It is a "feature" of Objective-C ;-)

What programming language has the most venture potential?

31 May 2015 by OriginalGriff

This isn't a question we can answer: all languages have "venture potential" - it depends what kind of market you are going into, what kind of products you are going to produce.For example, PHP works for websites, C++ doesn't. C++ works for native PC apps, but C# doesn't. C# can be used on PC,...

Multi-OS Engine Actions Menu

1 Mar 2016 by Android on Intel

This article takes a simple app and demonstrates the use of the above mentioned sub items.

Flutter Getting Started: Tutorial 2 - StateFulWidget

9 Jul 2018 by ThatsAlok

Let's explore the world of StateFulWidget with respect to Flutter

gcref

15 Nov 2018 by Yves Florido-Monnier

A safe and functional hold of managed types from native c++

Doing UTF-8 in Windows, Part 2 - Tolower or Not to Lower

18 Feb 2020 by Mircea Neacsu

Case folding for UTF-8 code

Data-Driven Model Predictive Controller (MPC) in Simulink Matlab

18 Oct 2020 by Roozbeh Abolpour

The data-driven MPC is implemented in this project that can be easily exploited

mscript - Version 2.0 Adds Error Handling, New Functions, and DLL Integration

2 Apr 2022 by Michael Sydney Balloni

If you were on the fence about adding mscript to your arsenal of system tools, have another look.

ASCII Animation (Just for Fun)

20 May 2002 by Jason Henderson

Draw and animate ASCII characters to a window using this COM object.

Storing and Retrieving Binary Data in ISAPI Extensions

5 Sep 2002 by Dirk Vandenheuvel

An easy way to store and retrieve binary data in an ISAP DLL and display them on a web page

iPhone Gaming Framework: Amendment

2 Jun 2009 by Craig Giles

There are a few things missing from the tutorials. This is the amendment, going to patch up the final few things to get you back on track!

iPhone Application Development

25 Apr 2010 by Inam86

I am trying to create an iphone application that allows me to connect my iphone to an ip camera. The way I am going about this is to create a server/client via a PC. PC acting as a server and the iPhone acting as a client. So basically I would like any information that will help me in creating a...

Best free tool for iPhone app development on Windows?

21 May 2010 by clay12

I used DragonFireSDK to create an App (Ditto!) in an iPhone Simulator, test the App on my iPhone and send the App to the App store without ever touching a Mac.Ditto! - http://itunes.apple.com/us/app/ditto/id363392316?mt=8DragonFireSDK - www.DragonFireSDK.com

how to get use fetch facebook friends birthday in an iphone app

29 Mar 2011 by Dave Kreskowiak

You can start by asking your question here[^].

Performance issue with try/catch block ?

19 May 2011 by Sergey Alexandrovich Kryukov

"Using try/catch is a good practice?" Not just this.Not using try/catch is impossibly bad practice. The only acceptable alternative is not caring about errors and other exceptional conditions (yes, this is quite acceptable in some cases).Now, try/catch can not be an issue of performance...

Unit conversion program in Objective C

18 Jul 2011 by Richard MacCutchan

Sorry but we do not provide code to order. Unit conversion is simple mathematics; just get a list of conversion values and create a table of units and factors. The rest should be easy.

Xcode 4 variable variable names

25 Sep 2011 by Sergey Alexandrovich Kryukov

This simply illustrates the fact that "writing" code with interface builder has it deadly sins which should be avoided. Don't rely on all those "interface builders", "Designers" and other stuff designed to please the weak-minded :-) in serious work. While helping in designing something...

Audio File Matching Program

28 Sep 2011 by avlaw

I found a good article regarding your questionDuplicate songs detector via audio fingerprinting[^]

Objective C for Windows

11 Dec 2011 by Albert Holguin

You should be able to use GCC for objective-C. To run GCC in Windows, you may have to install Cygwin (although they might offer a Win package independent of Cygwin).

Objective C for Windows

12 Dec 2011 by paladin_t

Please take a look at this:http://www.gnustep.org/[^]hope it helps.

CoreData Persistence Framework

16 Mar 2012 by Jozef Bozek

Ligth object wrapper for iOS CoreData.

starting with iphone development

5 Feb 2012 by Abhinav S

Start withhttp://www.dzone.com/links/objective_c_for_iphone_programming.html[^]http://iphonedevelopertips.com/category/objective-c[^]

System.Windows.Forms.SendKeys....

13 Apr 2012 by PK DEVELOPER

Hi all,I want to find something like System.Windows.Forms.SendKeys.SendWait(string); to send unicodechars & keys to focused window using MonoMac. I first tried to simulate key press but that is not what I am looking however event simulating key press bothered me alot(and after 3 days hard...

what is Synthesize in objective c & why use

14 Jun 2012 by OriginalGriff

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...A very quick search gave nearly one and a half million hits: Google[^]In future, please try to do at least basic research yourself, and not waste your time or ours.

Need help to install xcode on windows xp

31 Jul 2012 by Christian Graus

You can't. You need a Mac to write Apple products. Why on earth would they not use the iPhone to sell Macs ?

Wat and needed to develop iphone apps in windows 7

2 Aug 2012 by Christian Graus

shouting won't change reality. You need to buy a Mac.

program to convert Greek numbers to English numbers and vice versa

8 Aug 2012 by Sergey Alexandrovich Kryukov

Look at this converter:http://www.russellcottrell.com/greek/utilities/GreekNumberConverter.htm[^].(Referenced from http://en.wikipedia.org/wiki/Greek_numerals[^], please see.)This is all I could find. As far as I understand, it is fully written in JavaScript, so you can look at the...

How to Comunicate Two Iphone App

27 Dec 2012 by ridoy

http://stackoverflow.com/questions/10607599/communication-between-two-applications[^]http://stackoverflow.com/questions/4526465/iphone-apps-communication[^]http://stackoverflow.com/questions/3824977/iphone-app-communication-without-using-webservices[^]

codesign failed with exit code 1

27 Jan 2013 by nakulkundra

Please help , i just wan to run my old code , but its not working .. i have a 4.2 os ipad and the code was working fine before i ugraded my mac book to lion../Volumes/Development/XIAPSUIT 26-aug-2011/build/Debug-iphoneos/XIAP.app: object file format unrecognized, invalid, or unsuitable...

Xcode - Opening a url in a webbrowser

9 Feb 2013 by C.CoderCreator

this is my code textbox1 is the NStextfeildNSString *searchURL = [NSString stringWithFormat:@"https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&ie=UTF-8#hl=en&safe=off&tbo=d&sclient=psy-ab&q=", [_textbox1 stringValue]];and this is my errordata argument is not used for...

xcode 4 - Simple code not working?

12 May 2013 by _Maxxx_

By testing for the two strings being == you are actually asking whether the objects pointed to by the variables are the same object.And I guess they're not.You need to check if the string values of those objects are equalif ([_thetimelabel.stringValue...

how delete data in sqlite

13 May 2013 by OriginalGriff

Try:DELETE FROM MyTable WHERE regno=1See also: http://www.sqlite.org/lang_delete.html[^]

Explain briefly about strong ,weak ,copy, assign retain and there difference

19 May 2013 by Thomas Daniels

Hi,Have a look here:http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign[^]http://stackoverflow.com/questions/4510913/objective-c-assign-copy-retain[^]http://stackoverflow.com/questions/9035658/clarification-on-assign-retain-copy-strong[^]

deletion in sqlite database

20 Jun 2013 by SanjeevJayaram

-(BOOL) deletedata:(NSString*)name{ const char *dbpath = [databasePath UTF8String]; if (sqlite3_open(dbpath, &database) == SQLITE_OK) { sqlite3_stmt *deletestmt; NSString *sql_str = [NSString stringWithFormat:@"delete from studentsDetail1 where...

Ternary, Tertiary, Terinary …

25 Jun 2013 by Dennis E White

What really is the correct spelling for this conditional operator?

Anatomy of a Singleton

28 Aug 2013 by NSProgrammer

Anatomy of a Singleton.

.net web service communication with Objective C

29 Oct 2013 by Pratik Bhuva

Refer...

About C Programming

6 Dec 2013 by OriginalGriff

No.As a quick google would have told you: difference between c and objective c[^] Objective C is a superset of C.

About C Programming

7 Dec 2013 by baliram bhande

Objective-C is a thin layer on top of C, and moreover is a strict superset of C; it is possible to compile any C program with an Objective-C compiler, and to freely include C code within an Objective-C class.Objective-C derives its object syntax from Smalltalk. All of the syntax for...

Multiply timestring and float

10 Jan 2014 by OriginalGriff

Convert the time string to minutes as a float: 2 * 60 + 0 == 120.0Multiply by the original float: 120.0 * 1.5 == 180.0Convert this to an integer: 180.0 == 180Take the modulus base 60 (this is the minutes): 180 % 60 == 0 Integer divide the value by 60 (this is the hours): 180 / 60 ==...