如何在Visual Studio 2012中包含库？ [英] How to include libraries in Visual Studio 2012?

问题描述

我开始学习C ++几天前，我想获得一些数据，使它更有趣。我发现一个名为Unirest的强大的C ++库，可以帮助我从许多API获取数据，并在实践基本功能后）：

I started with learning C++ a few days ago and I would like to get some data to make it more funny. I found a powerful C++ library called Unirest that can help me to get data from many APIs and after practice the basics :)

我不知道如何将库包含到我的项目中。我喜欢一些视频关于如何做，所以我只是创建了 libs 文件夹（像我一直在做PHP编程时）和我复制的库文件。在我包含头文件 UNIRest.h 到我的源中，并将 libs 目录添加到VS + Directories选项<项目属性 - 配置属性 - VC +目录。一切还是OK。但是当我打开头文件 UNIRest.h 时，出现了问题：

I don't know how to include libraries into my project. I fond some videos about how to do it so I just created libs folder (like i always do when I'm programming in PHP) and I copied library files. After I included header file UNIRest.h into my source and added the libs directory into VS+ Directories option in Project Properties - Configuration Properties - VC+ Directories. Everything is still OK. But when I opened the header file UNIRest.h the problem appeared:

#import "UNIHTTPRequest.h"
#import "UNIHTTPRequestWithBody.h"
#import "HttpRequest/UNISimpleRequest.h"
#import "HttpRequest/UNIBodyRequest.h"
#import "HttpResponse/UNIHTTPBinaryResponse.h"
#import "HttpResponse/UNIHTTPJsonResponse.h"
#import "HttpResponse/UNIHTTPStringResponse.h"

所有这些宏都带下划线，并且编译失败，并显示以下消息：

All of those macros are underlined and compilation failed with message:

fatal error C1083: Cannot open type library file: 'libs\unirest\unihttprequest.h': Error loading type library/DLL.

你能帮我吗？希望这不只是一个愚蠢的问题，因为我试图使其工作整个下午：（

Could you please help me? Hope it's not just a stupid question because I tried to make it works whole afternoon :(

推荐答案

通常你需要做5件事在您的项目中包含一个库：

Typically you need to do 5 things to include a library in your project:

1）使用声明/接口添加#include语句必要的文件，例如：

1) Add #include statements necessary files with declarations/interfaces, e.g.:

#include "library.h"

添加一个include目录供编译器查看

2) Add an include directory for the compiler to look into

- >配置属性/ VC ++目录/包含目录（点击并编辑，添加新条目）

-> Configuration Properties/VC++ Directories/Include Directories (click and edit, add a new entry)

3）为* .lib文件添加库目录：

3) Add a library directory for *.lib files:

- >项目/ VC ++目录/库目录（点击并编辑，添加新条目）

-> project(on top bar)/properties/Configuration Properties/VC++ Directories/Library Directories (click and edit, add a new entry)

4）链接lib的* .lib文件

4) Link the lib's *.lib files

- >配置属性/链接器/输入/附加依赖关系（例如：library.lib;

-> Configuration Properties/Linker/Input/Additional Dependencies (e.g.: library.lib;

5）放置* .dll文件：

5) Place *.dll files either:

- >在目录中，您将从或打开您的最终可执行文件到Windows / system32

-> in the directory you'll be opening your final executable from or into Windows/system32

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