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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.

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

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

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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

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Faster than STL

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Container classes much faster than STL.

All Articles

Objective C

"no cipher suites in common" SSL Handshaking error

10 Aug 2015 by Member 11898126

Hello everyone!! I am an iOS client and trying to connect to the remote server with my self signed certificate. I add it to the keychain and start socket connection. When I try my code with localhost, I see some encrypted messages, but when I try to connect to the remote server I get the error...

"Swift or Objective-C?" that is here the Question!

5 Oct 2014 by KarstenK

Some toughts whether to prefer Objective-C or Swift.

'database is locked' in sqlite table

25 Jun 2013 by SanjeevJayaram

While inserting and updating the sqlite database table it works for the first time correctly. while running it for second time error comes as 'database is locked'.what is wrong in it.

'Hello World, Goodbye .XIB!' -- A .XIB'less Hello World Application

14 Sep 2010 by Ohmu

An article that creates a simple iPhone application that displays a graphic then cuts out the .XIB, and completes this just from the code.

.net web service communication with Objective C

28 Oct 2013 by Timir Patel

I want to call .net web-service method from objective c. the web service method contain parameter, so I have to pass parameter also from objective c..

.net web service communication with Objective C

29 Oct 2013 by Pratik Bhuva

Refer...

/applications/xcode.app/conten...

30 Jun 2016 by PT Vyas

I am trying to run an application but not able to build an app, getting following error - /Applications/Xcode.app/Contents/Developer/usr/bin/ibtool failed with exit code 255I have show and follow link to solved error but not solved this error.The link is - Link-1, Link-2, Link-3What I...

/applications/xcode.app/conten...

30 Jun 2016 by Surya_Narayan

Solution 1 :when testing on device and the only way to resolve it was to physically delete the app from the device (try deleting the app in the simulator) and restarting the simulator.Try cleaning the app. Cmd-Shft-K. Reboot your Mac , Rebuild Your project .. Solution 2 :some...

2D Animated Charts

24 Jan 2005 by darkoman

An article on creating 2D animated charts using Windows GDI.

2D-DFT for Color Image - VC++ GUI Implementation

10 May 2017 by Raghavendra Hosad

2D DFT for Color Image - GUI implementation

3des encryption for iOS

8 Oct 2013 by Member 8412410

Hai I am new to ios I check the internet for 3des sample cod but none of the workif any one had know share it

[Help] convert Obj-C to C#

9 Sep 2020 by wooriele

- (float) getVerticalOffset:(CGPoint)point1 point2:(CGPoint)point2 point3:(CGPoint)point3 point4:(CGPoint)point4 magnetLen:(float)length{ float result = length; if (point1.x > point2.x){ float t = point1.x; point1.x = point2.x; point2.x = t; } point1.x -= length;...

[Help] convert Obj-C to C#

2 Jul 2013 by macrose

Please see link below..http://www.cocoabuilder.com/archive/cocoa/108318-converting-objective-to.html#108318Hope it helps.

[iPhone] Global Variables

6 Jan 2012 by larssy1

Hi everyone,Is there anyone who could tell me how i could define global variables which I could start using in my entire application?currently I've tried, However, it is throwing me errors obviously..:http://plaatscode.be/141545/http://plaatscode.be/141543/errors on lines 7,8,9...

[iPhone] Global Variables

6 Jan 2012 by E.F. Nijboer

The first idea that came into mind was a singleton, and surprisingly it is also the preferred method. Check out this link for more info:http://derekneely.com/2009/11/iphone-development-global-variables/[^]Good luck!

A Basic Icon Editor Running on ReactOS (and Consequently on Windows XP and Newer Versions)

31 Jan 2021 by Steffen Ploetz

Creation of a basic icon editor with as little code as possible, that is running on ReactOS and Windows, to check out the stability of application development capabilities on ReactOS

A Better Bitmap Button Class

14 Oct 2001 by Joseph M. Newcomer

An improvement on the CBitmapButton class.

A Bridge From Fortran to C#

21 Feb 2017 by Member 1895422

This article discusses bridging from Fortran to the .NET language C#.

A C ATM Console App

28 Apr 2014 by Andre' Gardiner

A c banking atm concept console application

A Checkbox Tree Control for Use in Filtering Selections

23 Feb 2003 by Magerusan Grigore Cosmin

An ATL filter control

A Class for Selecting a Profile Image

7 Mar 2016 by Will J Miller

Using UIImagePickerController to replicate the profile selection features found in the contacts app requires solving some vexing problems. This article presents one approach for a class that replicates the functionality using the UIImagePickerController.

A Cool GDI Pattern Brush Tool with C++ Source Code

27 Aug 2003 by ucc801

A cool GDI pattern brush tool with C++ source code. You can create a new office XP style pattern fill mode quickly.

A Custom TextBox with Regular Expression Validation Using MC++

4 Oct 2004 by liyang yu

A custom TextBox with input validation written in VC++.NET, also walks you through the steps needed to build your own custom controls

A drop-in replacement for MessageBox()

4 Jan 2005 by Chris Hills

Other articles describe replacements for MessageBox() with extra buttons for "Yes to All" and "No to All", but you still have to write the code to handle those buttons. This article presents a class that does all the work for you.

A Faster Tree Control

16 Dec 2003 by Tibor Blazko, René Greiner

An article about an open source and free fast tree control

A Few Classes to Work With Date, Time, Datetime and Timezone Data

9 Oct 2002 by Alex Mol

Classes to make working with time and date data in different timezones easier.

A Flat Splitter Window

30 Jan 2003 by Marc Richarme

A small class that gives splitter-windows a flat look

A Float Tree Control like the Parameter List Control in Visual Studio

9 Apr 2002 by Johnson Zhou

In Visual Studio, you will find an auto-completion list when you type your code in the IDE. This is a similar control but using a tree.

A Guide to WIN32 Clipping Regions

9 Apr 2002 by Paul M Watt

Guide to understand the three different types of clipping regions, and how they relate to the Device Context

A Handy Idle-Processing Class for Long Procedures

31 Dec 2018 by Craig Muller

This article introduces a convenient class for hooking into idle processing.

A High Performance TCP/IP Socket Server COM Component for VB

25 Jun 2002 by Len Holgate

Although socket based TCP/IP servers using IO Completion Ports are often written in C++, it's sometimes useful to write such a server in Visual Basic.

A Lazy Stream Implementation in C++11

25 Jun 2018 by David Serrano Martínez

A lazy stream has been implemented in C++11, so as to highlight the functional capabilities of this new specification

A Memory DC for WTL

10 Mar 2002 by Paul A. Howes

An article detailing a simple memory-based device context for the WTL, to be used when flicker-free double-buffered drawing is desired

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

A Powerful and Flexible Text Drawing Function which has Simple Markup Tags

1 Sep 2004 by YoungJin Shin

This function makes for you to draw a fancy text easy.

A Prelude to Pointers

23 Jul 2003 by Nitron

A quick reference to pointers and pointer operations

A Programming Model to Use a Thread Pool

30 Sep 2000 by Sherwood Hu

A class to manage the thread pool

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.

A Reusable, High Performance, Socket Server Class - Part 1

17 Aug 2002 by Len Holgate

Writing a high performance server that runs on Windows NT and uses sockets to communicate with the outside world isn't that hard once you dig through the API references. What's more, most of the code is common between all of the servers that you're likely to want to write.

A Simple Class to Encapsulate VARIANTs

27 Mar 2004 by Rob Manderson

Using Variants in your C++ code

A Simple Class To Handle Dates

12 Dec 1999 by Richard Stringer

A class that simplifies common date handling tasks

A Simple HTML Drawing Class

5 Aug 2003 by BadJerry

Drawing HTML text onto a device context

A Simple Prototype for Demonstration of Voice Communication via Network/Internet

14 Jun 2000 by Zhaohui Xing (Joey)

Voice communication

A Simple Windows Forms Properties Spy

19 Aug 2003 by Rama Krishna Vavilala

A utility that can be used to spy the properties of any Windows forms control in the system

A Simple XML DOM Viewer/Navigator Using MC++

23 Sep 2004 by liyang yu

A simple GUI written in MC++ providing a DOM tree and XPath navigator for XML files

A Slice of Cucumber

9 Oct 2019 by Zebedee Mason

Visual C++ tests are created from Gherkin DSL feature files using a Python 2.7 script

A Static Splitter with the Ability to Hide/Show Multiple Columns/Rows

6 Aug 2002 by Alexander Kuzmin

A static splitter with the ability to hide/show multiple columns/rows

A Tree List Control

19 Sep 2002 by TigerX

A Tree List Control

A TreeList Control

1 Dec 1999 by David Lantsman

A tree control / list control hybrid

A View Class for Cropping Images

25 Jun 2016 by Will J Miller

This article describes the implementation of a custom class called MMSCropImageView. The class gives the feature of drawing and moving a rectangle over an image to identify the crop region and return it in an UIImage. It explains the considerations and solutions for cropping a bitmap.

image-processing

About C Programming

6 Dec 2013 by Mohamed Najim

What is the difference between c and objective c....?????Is the both are same?

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...

About global variable

1 Jan 2011 by Sagarkadam

How and where to declare a global variable a objective c..?

About global variable

1 Jan 2011 by Sandeep Mewara

I am not sure of whats unclear, so have a read here[^]. You should be able to define global variables after reading it.

About global variable

22 May 2012 by Sathish Kumar Namachivayam

U can declare the global variable in your .h file or in your .m file before @implementation

about iis on ios (local host)

5 Jun 2014 by Member 10690757

aoa... i am new in objective C.i want to ask that my webservice is running on windows 7..how can i check it on ios that data is comin properly from webservice or not???

about iis on ios (local host)

5 Jun 2014 by KarstenK

Just try it: prepare the webservice on the iis and make a query from the ios. The URL should be the URI from the iss.or try it with a website. check that the data is accessable.

about json method calling

10 Jun 2014 by Member 10690757

aoa i am making an f..app of finance system. i had maked web method login name in c# json wcf.but whenever i call this methos in ios it is getting a thread...my code for login form is:(IBAction)yes:(id)senderUIAlertView *msgbox=[[UIAlertView...

about json method calling

10 Jun 2014 by KarstenK

it is the "normal" behavior if one of both isnt a valid string. check the code path of creating st in a more detailed fashion.SBJSON *parsedata=[[SBJSON alloc] init];dic=[parsedata objectWithString:jsondata error:nil]; //error check!!!if([dic count]>0)//too simple check{NSMutableString...

about json method calling

4 Aug 2014 by KarstenK

check the dic result like thatNSString *s = [dic objectForKey:@"loginResult"];if( s == nil ){ NSLog(@"ERROR: No loginResult provided");}consider writing clean and stable code :-O

About layout of objective c

22 Apr 2014 by Member 10690757

i want to ask story board is good for working or nib files??

About layout of objective c

22 Apr 2014 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

There are many discussions on this.1. iOS User Interfaces: Storyboards vs. NIBs vs. Custom Code[^]2. Storyboards and Nibs: When To Use Which, and How to Mix[^]3. Storyboards vs NIBs vs Code: The Great Debate![^]4. Which is better : StoryBoard / NIB / Programmatic UI[^]

About objective-c JSON

28 Jul 2015 by Richard MacCutchan

See Code Project Quick Answers FAQ[^].

About the mutable string

1 Jan 2011 by Sagarkadam

How to reinitialize (not appending )the mutable string to other value or string...?

About the mutable string

1 Jan 2011 by Sandeep Mewara

string firstString = "This is the initial string.";firstString = firstString + "I am re-intializing it. It's being recreated based on how string addition work. It's not getting appeneded, instead new string created and then whole thing assigned to it!";Read on String Vs StringBuilder....

About the mutable string

22 May 2012 by Sathish Kumar Namachivayam

NSMutableStrin...

about versions of ios

11 Jun 2014 by Member 10690757

can i run my project which waz in simulator 4.2 , on simulator 6.0?

about versions of ios

11 Jun 2014 by KarstenK

You should update your project to start it with the actual SDK. Tons of improvements are waiting for you. I guess there will be breaking changes like ARC or some security issues. Read the fine Apple doc. It shouldnt be big problems.A big help are also the transitioning wizards in Xcode....

about webservice regarding ios

26 Apr 2014 by Member 10690757

aoa... i want to ask which is better service for ios??? json or xml format???thanx,

about webservice regarding ios

26 Apr 2014 by Manas Bhardwaj

In general, JSON format is more flexible and lightweight. Look at this article. It also suggests to have JSON implementation esp. for iOS devices.http://www.seguetech.com/blog/2013/04/01/xml-vs-json-web-services-best-choice[^]

Access locaStorage or Web database(WebSQL)created in Cordova from ios device native code

10 Jun 2014 by p@y@l

I have created a cordova application.The databases are created using websql.I am in a need to access the database and zip the file for backup.I need to know how can I access the database from where it is stored using objective c?Is there anyway or is it not possible?Anybody please give me...

Access locaStorage or Web database(WebSQL)created in Cordova from ios device native code

8 Jun 2014 by KarstenK

Data and apps are separated in iOS, so you cant access on the same device. But if the cordova is a server it will work. One way is SOAP/XML or JSON.Here is a quiet good sample that enlights the principles.

Access the main view controller from its container view

4 May 2015 by Member 11360293

I have a mainViewController with a container view in it. I'm trying to access theMainViewController from the container view.Here is my code:self.theMainViewController = (theMainViewController *)self.parentViewController;NSIndexPath *indexPath = [NSIndexPath indexPathForRow:idx...

Access the main view controller from its container view

4 May 2015 by KarstenK

It shows some weakness in your class design. You should stick to the MVC paradigma which inlcudes the separation of data, UI and handling to events.You need to define and set a (weak) property for it. I would recommend to create a protocol and a delegate.

Accessing digital certificate on an iPhone?

17 Feb 2015 by raniam

hi,I'm using XCode to generate an iOS app, and I need to run it on the device itself (iPhone 5S), and my app requires a digital certificate, so I've generated a digital certificate (.pfx)and added it to the keychain access on Mac, followed I've also installed it on my iPhone 5S (in...

Add date and time on the iPad photos

15 Jan 2014 by lisalis

How to print the Date and Time on top of the Photos which is taken from the IPAD. Thanks in Advance.

Add Programmatically added textField's text to sqlite database

24 Feb 2015 by Member 11360293

I have sqlite implemented in my xcode project. It gets its data from a UITextField. There is a texField that gets added programmatically everytime the user clicks a button. I will be recreating the 'same' textField. (Kind of.) How can I get the textField's data to the sqlie file?SQLite...

Add Programmatically added textField's text to sqlite database

24 Feb 2015 by KarstenK

You will only get the text-string of your textfield in the database. If you have a varying count of textfields you must save the count or some logic would should recreated.You need to run an INSERT QUERY on SQLite.

Add row of a certain cell id to a UITableView: returns an empty row

3 Mar 2015 by Member 11360293

I have a custom `UITableView` with different cell id's. I'm trying to add a row when the button gets selected. Here is my code: - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return self.numberOfRows; } -...

Add row of a certain cell id to a UITableView: returns an empty row

3 Mar 2015 by KarstenK

It is absolut that what you have coded. Set a breakpoint in cellForRowAtIndexPath: and you will see it. If you create a new cell all values are as initialized (or empty). You must fill it with some values.Have you created that cell type in the interface builder in the used tableview.PS:...

Add Section and Cell to a UITableView Programmaticallly

6 Apr 2014 by Brainy Girl

Hi,I'm new with objective c and xcode.I want to add more sections to the tableView when the user clicks on a button and add rows to that sections when the user clicks on another button.and when the user taps on any cell a new view should be presented that will contain label and a...

Add Serialization Support to CMenu

4 Dec 2001 by Sidney Chong

The CMenu class is a great help when it comes to manipulating menus, but unfortunately it doesn't implement serialization. CSerializableMenu is a subclass of CMenu that provides serialization support.

Adding a Notification Message to an iOS App

13 Jun 2014 by Michael Gledhill

How to add an fade-in message to your iPhone app in 5 minutes

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

Adding object to list within a list (nested list?)

27 Nov 2012 by Member 9628702

I have a winforms application which consists of a Van class and a delivery class.Van class:public class Van { private string VanNumber; public string vanNumber { get { return VanNumber; } set { VanNumber = value; } } ...

Adding object to list within a list (nested list?)

28 Nov 2012 by DaleMoz

I assume you have a List bound to ComboBox called, say, VanComboBox - the command you are looking for is:((Van)VanComboBox.SelectedItem).Deliveries.Add(DeliveryItem)

Adding two __m128 types via Accelerate framework

20 Apr 2012 by User 8157675

Hi all! Can anyone tell me, how to add two __m128 (float) variables using Accelerate framework

Admiration for Swift

10 Jun 2014 by Santosh Sharma (go2santosh)

Finally iOS developers get a new programming language as advanced as C# and Java

AES encryption technique in objective C

28 May 2016 by Member 12350964

I am working on a project where i have to coordinate with .net team.. I need the equivalent code for the below mentioned AES encryption algorithm(written in C#) in objective -C.. I have tried using AESCrypt and CommonCrypt but its not woking well..getting different encryption value in both...

AES encryption technique in objective C

28 May 2016 by Garth J Lancaster

The obvious thing is that the parameters for whatever libraries you're using on each side have to be the same - there are too many to name here, padding is the usual one that gets messed up (and would be consistent with the error you saw) here's a link to someone who says they have working...

All About MFC Serialization

9 Jan 2019 by steveb

Describes all aspects of MFC serialization mechanism

Alternative classes of Objective-C in Java?

15 Oct 2015 by hasnain_ahmad

I am building an android app that already build in iOS. I am novice to Objective-C.I want to find the alternative classes in java, so that I can implement the logic in java that is built in Objective-C.Here is my java code.String oldestDateString = "2015-10-01 00:00:00";String...

Alternative to MFC for GDI Programming

19 Jun 2007 by lano1106

Exploring the MFC GDI classes' inner working and proposing an alternative

Always displaying "Buddy Name, " in iMessage via my iOS app

11 Jan 2021 by Md Sadham

DESIGN: In my app, am using iMessage post option. Its works perfectly with one silly problem. Here is my code:if(!TARGET_IPHONE_SIMULATOR){ if ([MFMessageComposeViewController canSendText]){ MFMessageComposeViewController *MFMsgPicker = [[MFMessageComposeViewController...

Always displaying "Buddy Name, " in iMessage via my iOS app

10 Apr 2015 by KarstenK

It looks like it is a default value bei Apple if using an empty string. (It is something else than nil)MFMsgPicker.recipients = nil;worked fine. As always: if you dont need it - dont do it. But why arent you giving some useful value to it?

Always displaying "Buddy Name, " in iMessage via my iOS app

22 Jan 2022 by Member 15509240

Hi, I saw your query, and in my husband iPhone 13 pro phone I always keep seeing last mms(in iMessage)sent to “buddy name” but there is no contact exist with that name. Can u help?