DLL(dynamic library): How to create and use it?

DLL(dynamic link library): How to create and use it?

1. Microsoft Visual C++ Static and Dynamic Libraries

A simple introduction to static and dynamic libraries with Microsoft Visual C++.

2. Walkthrough: Create and use your own Dynamic Link Library (C++)

This step-by-step walkthrough shows how to use the Visual Studio IDE to create your own dynamic link library (DLL) written in Microsoft C++ (MSVC). Then it shows how to use the DLL from another C++ app. DLLs (also known as shared libraries in UNIX-based operating systems) are one of the most useful kinds of Windows components. You can use them as a way to share code and resources, and to shrink the size of your apps. DLLs can even make it easier to service and extend your apps.

In this walkthrough, you'll create a DLL that implements some math functions. Then you'll create a console app that uses the functions from the DLL. You'll also get an introduction to some of the programming techniques and conventions used in Windows DLLs..

To copy the DLL in a post-build event

1. Right-click on the MathClient node in Solution Explorer and choose Properties to open the Property Pages dialog.
2. In the Configuration drop-down box, select All Configurations if it isn't already selected.
3. In the left pane, select Configuration Properties > Build Events > Post-Build Event.

4. In the property pane, select the edit control in the Command Line field. If you followed the directions to put your client project in a separate solution from the DLL project, then enter this command:

   xcopy /y /d "..\..\MathLibrary\$(IntDir)MathLibrary.dll" "$(OutDir)"
   If your DLL and client projects are in other directories, change the relative path to the DLL to match.

5. Choose the OK button to save your changes to the project properties.

Now your client app has everything it needs to build and run. Build the application by choosing Build > Build Solution on the menu bar. The Output window in Visual Studio should have something like the following example depending on your version of Visual Studio:

Output

1>------ Build started: Project: MathClient, Configuration: Debug Win32 ------
1>MathClient.cpp
1>MathClient.vcxproj -> C:\Users\username\Source\Repos\MathClient\Debug\MathClient.exe
1>1 File(s) copied
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

6. How to Create C/C++ Dynamic-link Libraries in Windows

Modularize your program into separate components to ease deployment and installatio.

7. Create C/C++ DLLs in Visual Studio

In Windows, a dynamic-link library (DLL) is a kind of executable file that acts as a shared library of functions and resources. Dynamic linking is an operating system capability. It enables an executable to call functions or use resources stored in a separate file. These functions and resources can be compiled and deployed separately from the executables that use them.

A DLL isn't a stand-alone executable. DLLs run in the context of the applications that call them. The operating system loads the DLL into an application's memory space. It's done either when the application is loaded (implicit linking), or on demand at runtime (explicit linking). DLLs also make it easy to share functions and resources across executables. Multiple applications can access the contents of a single copy of a DLL in memory at the same time..

8. How to create and use DLL (Dynamic Link Library) in (C++)

With the help of DLL (Dynamic Link Library), we can make our project modular and reduce the development time. A DLL increase the performance of the project and promote the reusability of code. It also helps the developer to insert and remove the new functionality in the project without any hurdle.

9. C++ - Windows - Creating a dynamic-link library (DLL)

Creating a .DLL is an interesting process that allows a better comprehension how a dynamic-link library works on Windows.

No need to say that we'll use Visual Studio for that..

10. Use a Dynamic Library in a Microsoft Visual Studio Project

This example shows how to create and configure a simple Microsoft® Visual Studio® project that calls a dynamic library (DLL) generated by MATLAB® Coder™. The example uses Microsoft Visual Studio 2017. In other versions of Microsoft Visual Studio, you might encounter a different procedure..

11. C++ TUTORIAL - LIBRARIES - 2020

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12. Projects in Visual C++ 2010 – Part 1: Creating a DLL project

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13. Projects in Visual C++ 2010 – Part 2: Project Dependencies
14. Projects in Visual C++ 2010 – Part 3: Precompiled Headers

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15. Windows Dynamic-Link Libraries 1
16. DLL - Introduction

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17. DLL - How to Write

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18. DLL - Registration

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19. DLL - Tools

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20. DLL - Tips

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21. Making DLL's in Microsoft Visual C++ 6.0

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22. DLL - Quick Guide

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23. What is a DLL

This article describes what a dynamic link library (DLL) is and the various issues that may occur when you use DLLs. It also describes some advanced issues that you should consider when developing your own DLLs.

24. Dynamic-link library

Dynamic-link library (DLL) is Microsoft's implementation of the shared library concept in the Microsoft Windows and OS/2 operating systems. These libraries usually have the file extension DLL, OCX (for libraries containing ActiveX controls), or DRV (for legacy system drivers). The file formats for DLLs are the same as for Windows EXE files – that is, Portable Executable (PE) for 32-bit and 64-bit Windows, and New Executable (NE) for 16-bit Windows. As with EXEs, DLLs can contain code, data, and resources, in any combination.

Data files with the same file format as a DLL, but with different file extensions and possibly containing only resource sections, can be called resource DLLs. Examples of such DLLs include icon libraries, sometimes having the extension ICL, and font files, having the extensions FON and FOT.[1]

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