本例以插件形式测试

• 使用Lib引用，打包程序运行不用再拷贝lib文件
• 需要 lib 文件和 .h 头文件

lib部分的代码

• .h 头文件
  1.   #pragma once
  2.   #ifndef __MYTEST_LIB_H__
  3.   #define __MYTEST_LIB_H__
  4.   #include <string>
  5.   #include <iostream>
  6.    
  7.   int myPrint( int _age);
  8.    
  9.   #endif
• .cpp 文件
  1.   #include "MyTestLib.h"
  2.    
  3.   int myPrint(int _age)
  4.   {
  5.   return _age + 1000;
  6.   }

UE4 插件代码

Plugin lib文件部署

插件 build.cs设置

1.   using System.IO;
2.   namespace UnrealBuildTool.Rules
3.   {
4.   public class JsonPlugin : ModuleRules
5.   {
6.   private string ModulePath
7.   {
8.   // get { return Path.GetDirectoryName(RulesCompiler.GetModuleFilename(this.GetType().Name)); }
9.   get { return ModuleDirectory; }
10.   }
11.    
12.   private string ThirdPartyPath
13.   {
14.   get { return Path.GetFullPath(Path.Combine(ModulePath, "../../ThirdParty/")); }
15.   }
16.   private string MyLibPath //第三方库MyTestLib的目录
17.   {
18.   get { return Path.GetFullPath(Path.Combine(ThirdPartyPath, "mylib")); }
19.   }
20.    
21.   public JsonPlugin(TargetInfo Target)
22.   {
23.   PublicIncludePaths.AddRange(
24.   new string[] {
25.   "JsonPlugin/Public",
26.   // ... add public include paths required here ...
27.   }
28.   );
29.    
30.   PrivateIncludePaths.AddRange(
31.   new string[] {
32.   "JsonPlugin/Private",
33.   // ... add other private include paths required here ...
34.   }
35.   );
36.    
37.   PublicDependencyModuleNames.AddRange(
38.   new string[]
39.   {
40.   "Core",
41.   "CoreUObject",
42.   "Engine",
43.   "HTTP",
44.   "Json"
45.   // ... add other public dependencies that you statically link with here ...
46.   }
47.   );
48.    
49.   PrivateDependencyModuleNames.AddRange(
50.   new string[]
51.   {
52.   // ... add private dependencies that you statically link with here ...
53.   }
54.   );
55.    
56.   DynamicallyLoadedModuleNames.AddRange(
57.   new string[]
58.   {
59.   // ... add any modules that your module loads dynamically here ...
60.   }
61.   );
62.    
63.   LoadThirdPartyLib(Target);
64.   }
65.    
66.   public bool LoadThirdPartyLib(TargetInfo Target)
67.   {
68.   bool isLibrarySupported = false;
69.   if ((Target.Platform == UnrealTargetPlatform.Win64) || (Target.Platform == UnrealTargetPlatform.Win32))//平台判断
70.   {
71.   isLibrarySupported = true;
72.   System.Console.WriteLine("----- isLibrarySupported true");
73.   //string PlatformSubPath = (Target.Platform == UnrealTargetPlatform.Win64) ? "Win64" : "Win32";
74.   string LibrariesPath = Path.Combine(MyLibPath, "Lib");
75.   PublicAdditionalLibraries.Add(Path.Combine(LibrariesPath,/* PlatformSubPath,*/ "MyTestLib.lib"));//加载第三方静态库.lib
76.   }
77.    
78.   if (isLibrarySupported) //成功加载库的情况下，包含第三方库的头文件
79.   {
80.   // Include path
81.   System.Console.WriteLine("----- PublicIncludePaths.Add true");
82.   PublicIncludePaths.Add(Path.Combine(MyLibPath, "Include"));
83.   }
84.   return isLibrarySupported;
85.   }
86.   }
87.   }

调用

• JsonFunction.cpp代码

1.   #include "../ThirdParty/mylib/Include/MyTestLib.h"
2.    
3.   int UJsonFunction::MyOutput()
4.   {
5.   int str = myPrint(100); //lib 里的函数
6.   return str;
7.   }