Click here to Skip to main content
15,881,248 members
Everything / Programming Languages / Objective C

Objective C

Objective-C

Great Reads

by Paul M Watt
Guide to understanding how to create and use regions with the WIN32 SDK
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.
by Jecho Jekov
Provides an easy way to use C calling convention callback functions in C# and VB
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

by Javad Taheri (drjackool)
Show or hide, reorder, save and restore list view column headers
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.
by ToughDev
How to convert between NSString and C strings in iOS project
by Ben McNamara
Container classes much faster than STL.

All Articles

Sort by Updated

Objective C 

6 Nov 2007 by .Suchit
Generating smooth lines with antialiasing; sample code for animation is included
20 Mar 2014 by 0xMoonstar
I have an ASMX-Web Service and tested whether I can access the iPhone over the web wervice url (using json instead of soap) and everything worked. What bothers me is if there is any possibility to exchange objects than Collections or primitive data types? Is it possible to send LINQ-TO-SQL...
24 Oct 2010 by 4277480
POSIX Link[^] It explains it in detail.
11 Sep 2018 by _Flaviu
A way to use OpenCV in MFC project
29 Jan 2013 by _Maxxx_
Difficult to understand your question - but I think you need to usecode = [listOfColourCode objectAtIndex:0];
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...
20 Oct 2013 by _Maxxx_
contentArray=[NSArray arrayWithObjects:@"a",@"b",@"c",Nill];//error ARC forbids explicit message i.e. the message tells you ARV forbids retain, so don't specify retain?
10 Dec 2014 by _Maxxx_
Assuming you only want to develop for IOS / Mac and not for other platforms (Windows, Android etc.) then Swift should be your choice; It is newer, but is I think intended to be the replacement for Objective C - eventually. so learning it now you will be at an advantage over others converting...
4 Jan 2000 by _stefanu_
Using fixed panes to add rulers to your view
2 Apr 2004 by Abbas_Riazi
A tree control to show installed devices like Device Manager
14 Mar 2014 by Abdullah Umair
hey i am new to IOs development and want to know how do i display an equation in calculator using objective c ?
30 Dec 2009 by Abhijeet Pathak
Any suggestions for developing iPhone apps on Windows? Best free tool which can also compile project in native application.
5 Feb 2012 by Abhinav S
Start withhttp://www.dzone.com/links/objective_c_for_iphone_programming.html[^]http://iphonedevelopertips.com/category/objective-c[^]
19 Nov 2013 by Abhinav S
Try this video - http://www.youtube.com/watch?v=zS3gQ4pnmBs[^].Here is another link[^].
4 May 2014 by Abhinav S
You cannot use the GridView.Here is an alternate - http://www.appcoda.com/ios-programming-uicollectionview-tutorial/[^].
2 Jul 2014 by Abhinav S
Html and JavaScript is good for starting off.Learn PHP or any other language (ASP.Net) to do some server side stuff.
13 Jan 2015 by Abhinav S
Try Introduction to Object Oriented Programming Concepts (OOP) and More[^].
18 Dec 2015 by abhishek.singh.valeteck
Hi,Can somebody please let me know the list of Label color printers are supported by Airprint ?I tried a few listed here https://support.apple.com/en-us/HT201311[^] but didn't found a color label printer which prints a label of minimum width of 4 inches.Thanks,Abhishek.
25 May 2004 by Abin
A file/folder browsing control that integrates an editbox and a button with built-in images
26 Nov 2010 by Achilleas Margaritis
C++0x Dynamic Message Passing Ala Objective-C
29 Oct 2009 by Addison-Wesley
It is also possible to write debug messages to the Xcode console when you write your application. Accessing these capabilities is not limited to Objective-C applications. Your hybrid applications can do these things from within JavaScript.
22 Sep 2010 by Addison-Wesley
This chapter covers only the basic parts of the C language
9 Sep 2011 by Addison-Wesley
This chapter will cover some of the core concepts of object-oriented programming (OOP) and how they apply to both iPhone and Windows Phone 7 programming
23 Jan 2013 by adithya.hari
i am new to cocos2d, want to detect collision of two sprites. kindly help.
16 May 2002 by Adrian Bacaianu
Sample of using ISAPI extension to give online data to graphical applets.
15 Jul 2002 by Adrian Bacaianu
That article present a way to retrieve the GET-POST data from a form into an ISAPI extension.
13 Jul 2002 by Adrian Bacaianu
A way to build HTML pages in ISAPI using OLE DB database access
25 Jun 2002 by Adrian Bacaianu
This article presents a utility that lets you retrieve raw information from web servers using HTTP's GET and POST commands.
22 Aug 2010 by Aescleal
Hang on: Just noticed the Objective-C tag on the question. While I wouldn't preclude using gcc to program in Objective-C on windows 10:1 you'd be using it on a Mac. So why are you asking about DLLS???Old answer starts here...First question to answer is: Why do you want/need a DLL in your...
13 Jan 2015 by Aescleal
If you're learning a language that's designed to support OO programming grab some of the designs that you've worked up to answer exercises and code them into a bare bones solution. If you're not learning an OO language then I'd start learning one at the same time as OOD.
1 Feb 2013 by Ahmed Charfeddine
A Visual C++ Project Wizard for the fast creation of high performance TCP servers in C++
12 Sep 2001 by Alan Wen
This is a 3-tier application. A COM component returns SQL data in XML format, then using XSLT to transform to HTML at client side. By using XML, all the data can be sort, split into pages locally, that will give users a quick response!
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).
28 Jul 2001 by Ales Krajnc
An include file that allows you to specify colors by name instead of RGB value
9 Oct 2002 by Alex Mol
Classes to make working with time and date data in different timezones easier.
29 Sep 2018 by Alexander Atamas
A splitter control derived from CStatic for dialog controls, and that can be used not only within the restricted splitter pane.
4 Dec 2003 by Alexander Bischofberger
See how to have tear-off menus in your program
12 Jan 2002 by Alexander Kovachev
Simple class to represent tree data structures in C++
6 Aug 2002 by Alexander Kuzmin
A static splitter with the ability to hide/show multiple columns/rows
12 Jan 2021 by Alexander Schichmanter
Concept, Motivation and Implementation of Dynamic Logging - a valuable aid to the C++ programmer
2 Jan 2020 by Alexandre Bencz
DotNetPELib is a library which abstracts managed information such as namespaces, classes, fields, methods, and instructions. The information can then be used to generate assembly language source files, or PE executables or DLLs.
17 Dec 2019 by Alexandre Bencz
With this new OrangeC/C++ compiler back-end, you can compile your C code to .NET
22 Jan 2015 by alexey_s
This is a good online book http://beginnersbook.com/2013/04/oops-concepts/[^] for example. But PIEBALDconsult is very right about practice.
16 Dec 2021 by AlexeyAB
Atomic operations and C++11 memory barriers and assembler instructions generated on x86_64 CPUs
19 Feb 2014 by Ali Raza
guys need help in developing in such an app, its my final year project, and i have no idea of RTP and SIP, any help?
18 Sep 2010 by ali_azin
Hi,I tested the Process viewer[^] and some other similar codes but in all of them, it couldn't find processes like "notepad.exe". Is there any way to show those processes?Thanks in advance.
7 Aug 2012 by alluriganesh
Hi, I need program to convert greek numbers to english numbers and vice versa in objective-C language.please anyone help me out in this..
21 Sep 2001 by Alvaro Mendez
A simple app that converts to and between time_t, DATE, and regular date string expressions
22 Feb 2013 by AmeerAli from Bangalore
I have errors in snippet for image detection.
30 Jan 2015 by Amir Mohammad Nasrollahi
In this article, i consider the problem of identifying motifs in the biological sequence data sets. To solve this task, i present a new algorithm for finding patterns that just use library in C compiler and a new way to avoid using arrays search.
6 Feb 2000 by Amir Zalzberg
How to create a window with holes in it
8 May 2001 by Amit Dey
This article shows how to handle custom events generated in a VB ActiveX component in a Visual C++ client.
28 Jun 2012 by Amit._saini
I have a button in the UIView. when This button is clicked a hit to the server is initiated. During this time, if we force the application to go in Background. and then coming back to Foreground The application Crashes.The Log i have received is :-Jun 26 18:41:26 unknown SpringBoard[50]...
6 May 2014 by Amogh Natu
This tip shows how you can add scrolling to a view in iOS to allow multiple elements on the screen that won't fit in one screen.
13 Jul 2014 by Amogh Natu
This tip shows how to parse JSON response received from a web service into an NSDictionary object.
27 Nov 2012 by Amory Wong
A GLKView class that can be dropped into your project.
19 Sep 2011 by anandh.kdm@gmail.com
I need sample project which uses google map application in UIWebView. please sent sample code to [email removed].Thanks in advance..
28 Apr 2014 by Andre' Gardiner
A c banking atm concept console application
22 Jan 2019 by Andrea Ricchetti
Two ways to make a IEEE 754 conversion (32 bit) pack and unpack
20 Jan 2011 by Andrew Brock
If this means what I think it means, then don't bother.Speech recognition is difficult, then you want to be able to do it when the singer is putting their voice all through the spectrum, you have background noises, etc...Althoug you only want the word count and not the actual words, in...
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...
1 Dec 2013 by Android on Intel
Intel® HTML5 Tools for developing mobile applications
1 Mar 2016 by Android on Intel
This article takes a simple app and demonstrates the use of the above mentioned sub items.
9 May 2013 by André Kraak
Maybe this two part tutorial is helpful: Apple Push Notification Services Tutorial: Part 1/2[^] Apple Push Notification Services Tutorial: Part 2/2[^]
27 Jan 2003 by Aniket Nayak
18 Nov 2013 by Anil Kumar Ch
Hi friends,I tried to upload my ios app in my app store by the time of uploading the app i got an issue saying that error : 17.2We found that your app requires customers to register with personal information to access non-account-based features, which is not in compliance with the...
20 Aug 2011 by Aniruddha Loya
A windows application which makes use of Windows' cryptoAPI defined in header file which has a windows specific implementation for encrypting/decrypting files and folders needs to be ported on Mac OS X such the file encrypted using this application on Windows can be decrypted on Mac and...
28 May 2012 by Ankit Kumar Gupta
Hi,On click event of a button write [tableObject reloadData];now in tableView:cellForRowAtIndexPath method write logic to put a checkmark or use table accessory view to put a check mark.
18 Dec 2012 by Ankit Kumar Gupta
The best way would be to write a wrapper web service over your database file and then consume it on iOS ...A link to help you further http://www.raywenderlich.com/2941/how-to-write-a-simple-phpmysql-web-service-for-an-ios-app[^]
21 Sep 2010 by Ankurmahotra
hello Friendz, I just want to know how we can save videos in iphone simulator and how we can retreive or play them ?
21 Sep 2010 by Ankurmahotra
hi friendz .tell me why we used kuTTYpe in image picker controller And hw to show videos in photoLibrary when we open an iphone simulator?
21 Sep 2010 by Ankurmahotra
hi frendz i just want to know what is kuTType ? where it could be used? i am trying to pick video file from photo library through image picker controller but i can't. please reply as soon as possible how to save video in iphone simulator an hoe to upload it?
26 Mar 2014 by Anna Koneva
An article about interoperation issues in mixed C/C++/Objective-C development
25 Mar 2014 by Anna Koneva
An article about interoperation issues in mixed C/C++/Objective-C development
30 Jul 2012 by anonymous1310
Hi I am a newbie in iPhone development , i am developing a app in which i have to call a web service which will check the validity of login details ,but i am not able to call it in a right manner.I have the xml and the location at which it is hosted ,Can anyone provide me a sample of how to...
17 Apr 2000 by Anton Stuck
A class that provides some simple, yet spectacular window animation effects. Try the demo!
14 Jun 2012 by appu12
what is synthesizer in objective c and why it is use give example and explanation
28 Jun 2012 by Aqueel
I guess I will need to check the code which runs when you click on the button. If it is instantiating a new thread then that can be problem. I can help more after looking at your code so please post your code here.
29 Jun 2012 by Aqueel
synthesize directive adds getters and setters for your properties automatically so you dont need to add them manually.
6 Sep 2017 by arjun chudasa
i Have square Uiimageview i want to set curve text on UIImageview ( like circle ) and its looking clock and antilock wise Text set on Boundary of the Uiimageview(Circle uiimage) . What I have tried: i want make it dynamically because if ios device changed then it looks worst.
7 Aug 2018 by Artem Moroz
Using ESP8266 module to remotely control high power electrical appliances
20 Mar 2016 by Arthur V. Ratz
typedef struct tagClerk{ // Here you should declare fields of your table represented as // variables}
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
15 Apr 2021 by Arvind Patel Apr2021
Write a function f where f(f(x)) = -x (assume x to be an integer), any programming language would do. What I have tried: How can I write the following fuction?
28 Oct 2012 by Avinash6474
I have upgraded MAC Mini os from 10.5 to sno leopard, and I installed xcode 4.4. But the xcode is not working properly,It is showing a long list of error:Following are the error messages:Process: Xcode [404]Path: ...
2 Nov 2012 by Avinash6474
Need following things to install : 1) iPhone configuration utility 3.52) Xcode 4.5.1first install iPhone configuration utility 3.5 and then install Xcode 4.5.1. It work for me.--Avinash
28 Sep 2011 by avlaw
I found a good article regarding your questionDuplicate songs detector via audio fingerprinting[^]
5 Aug 2003 by BadJerry
Drawing HTML text onto a device context
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...
7 May 2014 by baliram bhande
refer this site it may get your solution...
21 Aug 2011 by barneyman
it can't ...you'll have to create an abstraction layer, implemented in both OS's, which hides implementationor buy a third party library that does the same
9 Apr 2015 by barneyman
I'd use a bunch of look up tables if you just want to do simple conversions(pcode)struct conversionsEasy { char leftName[32], rightName[32]; float leftToRightRatio;}conversionsEasy easy[]={{"Kilometre", "metre",true, 1000},{"Foot", "metre",...
17 Aug 2002 by Barretto VN
3 Aug 2002 by Barretto VN