UE4 加载第三方库

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首先写一个第三方库

#pragma once#ifndef __MYTEST_LIB_H__#define __MYTEST_LIB_H__#include <string>#include <iostream>int Addd(int a, int b);#endif

.cpp

#include "stdafx.h"#include "MyDll.h"int Addd(int a, int b) { return a + b; }

生成静态库lib

第一种，项目调用：

和Source同级目录下建个ThirdParty文件夹，在ThirdParty下再新建Includes和Libs文件夹，把上面的.h丢进Includes，lib丢进Libs

然后在项目Build.cs下添加：

using System.IO; private string ModulePath    {        get{ return ModuleDirectory; }//return Path.GetDirectoryName(RulesCompiler.GetModuleFilename(this.GetType().Name));     }    private string ThirdPartyPath    {        get { return Path.GetFullPath(Path.Combine(ModulePath, "../../ThirdParty/")); }    }

在 public TTTTT(TargetInfo Target)下加上：同下LoadThirdPartyLib(Target);函数

       // PublicIncludePaths.Add(Path.Combine(ThirdPartyPath, "Includes"));      //  PublicAdditionalLibraries.Add(Path.Combine(ThirdPartyPath, "Libs", "XXX.lib"));

接下来就可以在.h文件里#include你的第三方头文件了

第二种，插件调用：

同样在插件Source同级下新建ThirdParty文件夹，在ThirdParty下多一层MyTestLib文件夹，再往下新建Includes和Libs文件夹，把上面的.h丢进Includes，lib丢进Libs

然后在插件Build.cs下添加：

using System.IO;private string ModulePath //第三方库    {        // get { return Path.GetDirectoryName(RulesCompiler.GetModuleFilename(this.GetType().Name)); }        get { return ModuleDirectory; }    }    private string ThirdPartyPath//第三方库    {        get { return Path.GetFullPath(Path.Combine(ModulePath, "../../ThirdParty/")); }    }    private string MyLibPath //第三方库MyTestLib的目录    {        get { return Path.GetFullPath(Path.Combine(ThirdPartyPath, "MyTestLib")); }    }

public Test(TargetInfo Target)下添加一个 LoadThirdPartyLib(Target);函数，下面是函数实现

 public bool LoadThirdPartyLib(TargetInfo Target)    {        bool isLibrarySupported = false;        if ((Target.Platform == UnrealTargetPlatform.Win64) || (Target.Platform == UnrealTargetPlatform.Win32))//平台判断        {            isLibrarySupported = true;            System.Console.WriteLine("----- isLibrarySupported true");            string PlatformSubPath = (Target.Platform == UnrealTargetPlatform.Win64) ? "Win64" : "Win32";            string LibrariesPath = Path.Combine(MyLibPath, "Libs");            PublicAdditionalLibraries.Add(Path.Combine(LibrariesPath,/* PlatformSubPath,*/ "MyThirdParty.lib"));//加载第三方静态库.lib        }        if (isLibrarySupported) //成功加载库的情况下，包含第三方库的头文件        {            // Include path            System.Console.WriteLine("----- PublicIncludePaths.Add true");            PublicIncludePaths.Add(Path.Combine(MyLibPath, "Includes"));        }        return isLibrarySupported;    }

接下来就可以在.h文件里#include你的第三方头文件了

下面是分享的代码http://download.csdn.net/detail/u014532636/9853272

参考：

http://blog.csdn.net/Szu_IT_Man/article/details/58232638

http://blog.csdn.net/yangxuan0261/article/details/52098104

http://blog.csdn.net/lunweiwangxi3/article/details/48373033

加载DLL参考:

http://blog.csdn.net/baidu_27276201/article/details/75675836?locationNum=2&fps=1

https://wiki.unrealengine.com/Linking_Dlls

http://blog.csdn.net/szu_it_man/article/details/58232638#引用dll

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