C

Great Reads

by Martin Mitáš

How to support scrolling within your controls.

Synchronization with Visual C++ and the Windows API

by Espen Harlinn

Choosing the right synchronization mechanisms when working with threads, thread-pools, and I/O Completion ports to create high performance asynchronous servers in C++

Intermediate Data Clustering with k-means

by Andy Allinger

Add features to k-means for missing data, mixed data, and choosing the number of clusters

Authenticated Encryption

by Jeffrey Walton

Perform authenticated encryption with Crypto++.

Latest Articles

BASIC is not dead! Neither is the WIN32! Time to end the myth. (Part 3)

by Chris Boss

BASIC: A powerful language often underestimated and undervalued

RGFW | Singler-Header Lightweight Framework for Basic Window and Graphics Context Handling (like GLFW)

by ColleagueRiley

A multi-platform single-header very simple-to-use framework library for creating GUI Libraries or simple GUI programs.

How to Design an AXI4 Stream Interface in Vitis HLS

by FPGANinja

A walkthrough and source code for designing a stream interface in Vitis HLS

Fast SSE Pseudo Random Number Generator

by Alexey Shtykov

The thing that could generate pseudo random numbers faster than standard library does

All Articles

top

C

Week Numbers According to ISO8601

7 Mar 2010 by Luc Pattyn

This is an alternative to "Week Numbers According to ISO8601".

Java

C++

Designing the Interface of DLLs in C/C++ Projects

19 Feb 2016 by pasztorpisti

An advice to make your DLL interface more attractive and easier-to-maintain even in cross-platform projects

Setting up an MS Outlook Appointment C#

28 May 2010 by DecodedSolutions.co.uk

This is a simple article describing how to create an add an outlook appointment to your MS Outlook Calender.

Custom Context Menu

28 Mar 2014 by Alex Culea

Shows how to create a window that behaves like a context menu

C++

Windows

Win32

Introduction to OpenGL with C/C++ on ReactOS

10 May 2021 by Steffen Ploetz

Check whether ReactOS is able to run OpenGL, determine a convincing IDE and get started with the OpenGL on ReactOS.

Eat Your Own Dogfood

7 Oct 2021 by Mircea Neacsu

Source code organization suggestion

C++

project-management

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

25 Jul 2012 by pasztorpisti

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

Yet Another Fully Functional ownerdraw Menu

23 Jan 2020 by Steffen Ploetz

Another fully functional ownerdraw menu with minimal effort - this time based on Win32, with icons instead of bitmaps, with accelerators and tested for ReactOS and WinNT 4.0 to Windows 10

Allocating Memory in C/C++: How to Avoid Memory Mismatched Allocation/Deallocation Issues Detected by Intel® Inspector XE for Visual Studio 2015

1 May 2017 by Arthur V. Ratz

This tip/trick introduces the basic ideas on how to avoid memory mismatched allocation/deallocation issues detected by Intel® Inspector XE for Visual Studio 2015

How to zero your memory?

1 Aug 2011 by ThatsAlok

Describing various method to zeroing the buffer in memory

C++

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

Programatically Configure an Ethernet Network Adapter on a Windows Machine Using C/MFC

2 Mar 2016 by Antonio Miras

Programatically set a static IP, subnet mask and gateway to an ethernet network adapter on your local machine

C++

Windows

MFC

How to Compile Legacy Win32 Programs in Visual Studio 2019?

4 Feb 2020 by Southmountain

Some tips on how to compile legacy Win32 programs in Visual Studio 2019 - may save you few hours to figure out why

Fast Integer Square Root For 8051

28 Dec 2020 by CPallini

Fast integer square root computation in 8051 assembly

Check for an active Internet connection

22 Mar 2010 by PJ Arends

I have seen many different ways to check if the computer has an active internet connection. The best one, IMO, is to check for the presence of the default route in the IP forwarding table that is maintained by windows. This can be checked by using GetIPForwardTable function found in the...

C++

Full Service SQLite for WPF (Including File Handling)

19 Jun 2015 by ergohack

System.Data.SQLite is great, but was missing some BLOB support. Switching to the native source project was easier than expected and provided significant functionality benefits.

Manipulate network adapter via WMI in plain C and C++

18 Dec 2021 by Kai Schtrom

Win32_NetworkAdapterConfiguration WMI class in plain C and C++

Quality Losses (Related to Kerning) in Text Rendering for OpenGL with FreeType

17 Dec 2022 by Steffen Ploetz

High-end quality in text rendering concerns not only the characters, but also the character spaces - and here FreeType is not quite up to date anymore: The kerning used by FreeType is not always available (especially with newer fonts).

C++

OpenGL

multimedia

Remind review in iPhone apps

12 Dec 2013 by Cloud Hsu

How to remind review in iPhone App

Objective-C

iPhone

Mobile

A pure-C Centered MessageBox Replacement

23 Oct 2015 by Ph. Jounin

A C-replacement for MessageBox

Windows

VS2010

Introduction to Simulate External Interrupts Using Atmel Studio for AVR

21 Jun 2016 by Dharmateja Challa

Tip on how to simulate external interrupts using Atmel Studio 7 for AVR Atmega MCUs

Arduino

AVR

microcontroller

Using C for Android Development (the Easy Way)

17 Feb 2021 by Gábor Angyal

Binding C structs and functions to Kotlin is easier than you have thought!

Android

Dev

Architect

Swap Two Numbers without using Temp Variable

18 Feb 2012 by GregEllis

You can do it with some XORs:int a = 25, b = 7;a = a ^ b;b = b ^ a;a = a ^ b;Or the same thing with some shorthand to make the code even harder to read:a ^= b;b ^= a;a ^= b;

Javascript

Java

C++

How to get current function return type using __FUNCDNAME__

2 May 2012 by Itai Basel

A macro that gets current function's return type on visual C++

VisualC++

C++

Kernel Modules using autoconf

17 Dec 2015 by Tim ONeil

Using the autoconf tool chain to add modules to the Linux kernel

Approach to Paste a Bitmap into an Icon Image on ReactOS (and Consequently on Windows XP and Newer Versions, using Win32 API)

27 Dec 2020 by Steffen Ploetz

Step-by-step instructions and source code snippets for inserting a bitmap (or a section of it) into an icon image.

For Simplicity's Sake in Windows

26 Jan 2024 by Member 16179004

Capture Enter key in edit control with no dialog box and no subclass.

C++

Windows

dialog

Swap Two Numbers without using Temp Variable

17 Feb 2012 by josh.rendon

That conclusion is definitely wrong. Your equation expanded equals: b = (a+b) - (a-b) = a+b - a + b = 2*bFor your example a=20, b=10b = (20+10) - (20-10) = (30) - (10) = 20b = 20 + 10 - 20 + 10 = 20A counter example to disprove this: a=75, b=88b = (75+88) - (75-88) =...

Javascript

Java

C++

Demonstration of Wlan APIs from MSDN

27 Sep 2012 by david pretham

Windows Native API application

Windows

Visual-Studio

Session 1: Setup SoftEther L2TP server on Amazon AWS Ubuntu

11 Feb 2015 by WoodyMou

Session 1: Setup SoftEther L2TP server on Amazon AWS Ubuntu

Big Design Up Front or Emergent Design?

28 Nov 2016 by Zebedee Mason

Or why not both? This shows how.

Introduction to Embedded Icons without Resource on ReactOS

21 Oct 2019 by Steffen Ploetz

How to embed icons into Win32 programs without utilizing resources - useful for platforms without resource editor/resorce compiler, e.g., ReactOS. Learn the missing things about the .ico format.

How to Set a New or Change / Exchange / Replace the Image of a Toolbar Button

21 Feb 2021 by Steffen Ploetz

My best practice approach to change the image of a toolbar button

Looking at pointer declarations

15 Jan 2010 by avinash064

It is very simple :laugh: and fun ..just divide the line before and after * , likeconst int * pconst int (before *) represent [constant integer]and *p represent a pointer add both u get a pointer pointing to a constant integer , it means u can't change value but pointer can...

C++

Keys Enumeration Win32

15 Apr 2010 by Joshua Tully

So I’m playing around with DX10 and decide to do some input work. After much research apparently no one can decide what the best way to handle keyboard input so I’m just going to use WM_KEYDOWN/UP and store the state in a bool[] and check that in the rendering code. Also, instead of using...

Win32

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.

Objective-C

iPhone

Mobile

Good old & dirty printf() debugging in a non-console C++ application or DLL.

26 Jul 2011 by Dave Cross

I just use OutputDebugString() and Sysinternals' DebugView.exe.

C++

Windows

Accesing DB2 Databse using DB2 CLI

4 Oct 2012 by Ritesh_Singh

C++ code to connect/access DB2 database using DB2 call level interface(CLI)

To Toggle or Not to Toggle - xor is Your Friend

12 Jan 2013 by Andreas Gieriet

Short tip to show a convenient use of the lesser known xor operator

C++

Dev

Using CocoaPods on iOS

4 Mar 2014 by Melih Mucuk

Configuring and using CocoaPods on iOS projects.

C# / VB.NET / C++ CLI and WinAPI: How to Programmatically Press Mouse Button, and Check if Mouse Button or Keyboard Key Pressed

29 Sep 2014 by Emiliarge

Using WinAPI functions - GetAsyncKeyState and mouse_event

HTTP Proxy Using Play Framework and WS API

28 Oct 2015 by Alexander Iskhakov

Creating a HTTP proxy using Play framework and WS API

Using Mininet-wifi to Simulate Software-Defined-Wireless-Network

16 Dec 2015 by JinWenQiang

Just a brief introduction of a simulator to build wireless environment

Fast Graph Traversal

8 Apr 2016 by jurhas

Solving graph on linear time

graph

I2C Between Raspberry and Pic24

11 May 2016 by Member 11246861

RaspberryPi2 master transmits to and receives from Pic24FJ64GB002 slave through I2C

OpenGL GPGPU 1D Fourier Transform

22 Feb 2018 by Asif Bahrainwala

OpenGL Compute Shader

How Windows Generates IP Header's ID Field

1 Jun 2018 by Member 13737597

This article shows how Windows generates IP header's ID field

Guarantee Correct Spacing for toolbar Separators on Multiple TB_ADDBUTTONS Calls

15 Jan 2020 by Steffen Ploetz

A solution for: If the toolbar is created button by button with single TB_ADDBUTTONS calls, the width of the separators is not calculated correctly.

The Big Picture of GIO's GAction-Family

12 May 2020 by D4rkTrick

Big picture of GAction, GActionGroup, GActionMap, GActionEntry, GSimpleAction and GSimpleActionGroup

Free Gamma: Precisely Calibrate Your Display

9 Jun 2023 by AbdulRahman A. Badry

Alter your display gamma-ramp to correct & calibrate it

WinAPI

How to zero your memory?

9 Aug 2011 by YvesDaoust

What about this, using SSE2 assembly (32 bits):void Zero(void* Buffer, int Count){ char* Cur= (char*)Buffer; char* End= (char*)Buffer + Count; // Clear the initial unaligned bytes while (Cur

C++

Compiling Native C/C++ library for Android

20 Aug 2014 by pi19404

This article describes the method to cross compile C/C++ library for Android OS

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

5 Oct 2014 by KarstenK

Some toughts whether to prefer Objective-C or Swift.

C Code for 4-bit Control of Newhaven OLED Character Display

24 Jul 2015 by BEmbedded

This article discusses 'C' code used to control a Newhaven OLED in 4-bit mode. It is a MBLABX project.

Using Posix Message Queue in C#, Mono on Linux

3 Oct 2015 by Uttam Kotdiya -India

This tip demonstrates how to use posix message for Inter Process Communication (IPC) in C#, Mono on Linux

Amazon S3 .lib/Dll for Uploading File with Signature Version 4 for VS2010 in C++

14 Feb 2016 by Jigar_Patel

Amazon S3 lib for uploading file in C++ using VS2010

Raspberry<-->SPI<-->Microchip

19 Feb 2016 by Member 11246861

Raspberry master, Pic24 slave over SPI

C++

Debian

VS2015

Getting Transducers Over LAN

13 Apr 2016 by Member 11246861

Within LAN, laptop gets signals from microcomputer and microcontroller using TCP/IP and SPI

Automatically Disappearing Dialog, Used to Provide VERIFY and ASSERT on ReactOS

8 Jan 2020 by Steffen Ploetz

Automatically Disappearing Dialog

swprintf_s Safe? Maybe Not.

9 Feb 2010 by Eugen Podsypalnikov

Hello :)Your own description of the second parameteris different to the "original"...http://msdn.microsoft.com/en-us/library/ce3zzk1k(VS.80).aspx[^]

C++

Generic LINQ Usage To Return Single Value From DataRow

15 Jul 2010 by Paul Brower

This tip will allow you to return the value from column X, where column Y matches your filter

LINQ

DataRow

DataTable

Transparent OpenGL window

9 Feb 2011 by Karl Phillip

If you are looking for a true transparent window to render your 3D objects, check this thread:http://stackoverflow.com/q/4052940/176769

graphics

Passing an empty parameter to a C macro

21 Jul 2011 by zvx

How to fool the C pre-processor into accepting an empty parameter to a #define

Good old & dirty printf() debugging in a non-console C++ application or DLL.

26 Jul 2011 by Jaime Olivares

Plain old console output is still a valuable debugging tool, even when used in a GUI application.There are many tools here in CP that can be combined with console output like:CConsole - a simple console for debug output[^]Creating a console for your MFC app's debug output[^]You can use...

C++

Windows

Generic DropDown Control Using LINQ to SQL and Entities using Reflection

21 Aug 2011 by murtaza dhari

A generic dropdown control using LINQ to SQL and Entities using Reflection

Loading/Unloading WinCE Drivers at run time

6 Nov 2011 by Member 4079860

Describes a process to load/unload built in drivers under WinCE at run time to speed up development process

C++

WinCE

Declare a reference for a two dimensional array without typecasting

3 Jan 2012 by kooyou

The second form is wrong. A two dimensional pointer does not equal to a two dimensional array. But you can use an one dimensional pointer to reference the two dimensional array.int arr[1][20];int *pTwoDem=(int*)arr;Now you can use *(pTwoDem+10) to replace arr[0][10].

C++

Debug with RPC

25 Apr 2012 by Member 7961821

Life debug plug-in of non debugable host

C++

Windows

Visual-Studio

Design TypeDataSet from Storedprocedure using temptable

6 Nov 2012 by Pranay Rana

Design TypeDataSet from Storedprocedure using temptable

Uniquely Restricted Matchings in a Graph

1 Nov 2012 by Subhendu Sekhar Behera

Algorithm to find out all the Matchings and Uniquely Restricted Matchings in a Graph

C++

recursion

Capture Incoming HTTP Requests to the Web Server

27 Nov 2014 by Abdallah Al-Dalleh

How to handle post data coming inside an HTTP POST request

C++

HTTP

How To Do Simple Image Binarization?

13 Jan 2015 by Lai Taiyu

How to do simple image binarization?

RGFW | Singler-Header Lightweight Framework for Basic Window and Graphics Context Handling (like GLFW)

25 Feb 2024 by ColleagueRiley

A multi-platform single-header very simple-to-use framework library for creating GUI Libraries or simple GUI programs.

Security Blackout Window

20 Nov 2013 by Richard MacCutchan

Obscure a window or the screen and show a dialog.

Linux on Windows

24 Oct 2022 by Tiago Cavalcante Trindade

How to use WSL, GUI on WSL and how to compile for Linux on Windows

C++

Linux

compilation

How to make a callback to C# from C/C++ code

26 Jun 2013 by Tecfield

This post shows how to make a callback to C# from C/C++

C++

Windows

DLL

An Introduction to Integer Compression

15 Mar 2016 by cruppstahl

Describes algorithms for integer compression, introduces a few libraries and shows how to use them

C++

The Inner Working of FindResource() and LoadString() Win32 Functions.

24 Mar 2014 by pasztorpisti

A custom implementation of the FindResource() and LoadString() functions with better error indication. Pointing the direction for those who want to learn the binary PE resource format.

C++

Windows

Win32

Random extraction of 5 cards from a deck

26 Jan 2010 by CPallini

The question: "How can I extract 5 random cards from a deck?" (or similar), appears every now and then at the C/C++ forum.I use the following method:const int CARDS = 52;int card[CARDS]; // the 'card' array represents all of the cardsint i, deck_cards;// initializationfor (i=0;...

C++

Bigger Directories

15 Dec 2017 by Laurie Stearn

Dialogex with Listbox to manipulate long paths in Windows

Cross-platform Visual Memory Tracker

15 Mar 2016 by araud

Did you ever want to know where most of the memory is consumed? Whether it leaks or just gets allocated too much. This home brew memory tracker is yet another bicycle that you will be able to tune for your needs.

XBOX360 Achievement

31 Dec 2020 by Kai Schtrom

Display smart messages on the Windows Desktop as XBOX360 achievements

Windows

Win32

Dev

Symbolic Code Isn't Always Meaningful

18 Mar 2019 by qqmrichter

Overuse of #define can be ludicrous.

C++

Easy way to simulate keyboard press and release keys

6 Mar 2013 by Ahmed Elkafrawy

An easy way to simulate keyboard press & release keys to another application

Code Injection

28 Feb 2014 by _Ravikant Tiwari_

This program will demonstrate the process of injecting code into already running processes. Here we have choosen to inject into Explorer

Counting Occurrences

6 Feb 2014 by CPallini

A simple algorithm for counting occurrences of symbols in files

Lua

C++

Integration .NET Component into your Native MFC Application (1)

9 Mar 2015 by sunhui

Integrate .NET Component to your Native MFC Application at runtime

Heap Data Structure and Heap Sort

3 Mar 2014 by CPallini

Simple approach to heap data structure and heapsort, using C and Lua

Lua

algorithm

Overriding Virtual Functions, a Comparison Between C#, C++ and Java

20 Jan 2017 by marcus obrien

This article compares the OO features of inheritance and function overriding in C++, C# and Java.

Creating Custom FFmpeg IO-Context

6 Nov 2012 by Philipp Sch

How to use an IStream-Interface with FFmpeg

C++

Dev

video

Snake & Ladder Game - C Graphics (TurboC++)

7 Nov 2014 by Ullas_Krishnan

This is only for students who are developing mini projects with Turbo C / C++ Compiler. This example may help you to get an idea in submitting your mini projects with stunning user interface experience with Mouse click events.

TurboC++

graphics

game

How to implement a stack in Objective-C

23 Jul 2011 by Cloud Hsu

Stack implementation for Objective-C.

Objective-C

iPhone

Mobile

Quicker Prime Number Test

6 Nov 2011 by Pascal Ganaye

When you search manually, you can search for every odd number that is a step of 2. If you're a bit more clever (as you are), you can use steps of 6 (2 * 3). Testing (testno+1)%6==0 is very similar to (testno % 6) = 5.You can speed up big time by having a loop that increments per steps of...

How to Write Good Code

22 Nov 2015 by Marc Clifton

Each function should answer "how-what-why."

How to wake up a PC using waitable timer

30 Jul 2013 by YoungJin Shin

How to wake up a PC using waitable timer

C++

Windows

Capture Program using GDI

29 Mar 2017 by Taehoon Kim 1004

Capture program using GDI

Swaping values of two variable without temporary variable

11 Mar 2010 by chevu

I don't know whether these type of tips are allowed or not. But after having experience of core algorithm-base technical interview I thought I should share question I was asked in my interview.They asked me to show all methods I know to swap values of two variables.I Tried my level best...

C++

All-Topics

Getting Started with Smart Watch Development with Pebble

15 Oct 2015 by Abhishek Nandy

Smartwatch Development with pebble

smartwatch

Preserving Overheat Multithreading

17 Apr 2016 by Adamanteus

Preserving overheating processor in multitasking environment

Windows

hardware

Dev