日常开发中有需求批量在大纲面板批量创建一些文件夹模板，此时若通过工具一键实现则非常方便：
创建文件夹部分需要借助C++编写工具函数实现，接下来就来讲解下具体操作。
1.编写Outliner相关蓝图函数
首先在项目中打开VS工程，引用Outliner相关编辑器模块：
build.cs
using UnrealBuildTool;public class MyProject : ModuleRules
{public MyProject(ReadOnlyTargetRules Target) : base(Target){PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "EnhancedInput", /*此处增加*/"SceneOutliner" });}
}
创建蓝图函数库，编写具体接口：
.h:
UCLASS()
class MYPROJECT_API UMyBlueprintFunctionLibrary : public UBlueprintFunctionLibrary
{GENERATED_BODY()UFUNCTION(BlueprintCallable, Category = "CreateOutlinerFolderTool")static void CreateOutlinerFolderTemplate(FName FolderName);
};
.cpp:
// Fill out your copyright notice in the Description page of Project Settings.#include "ToolMenus.h"
#include "SSceneOutliner.h"
#include "LevelEditor.h"
#include "Engine/Selection.h"
#include "Engine/Level.h"
#include "MyBlueprintFunctionLibrary.h"void UMyBlueprintFunctionLibrary::CreateOutlinerFolderTemplate(FName FolderName)
{FModuleManager& ModuleManager = FModuleManager::Get();if (ModuleManager.IsModuleLoaded(TEXT("UnrealEd"))){TWeakPtr<ILevelEditor> LevelEditor = FModuleManager::GetModuleChecked<FLevelEditorModule>(TEXT("LevelEditor")).GetLevelEditorInstance();if (LevelEditor.IsValid()){TArray<TWeakPtr<ISceneOutliner>> SceneOutlinerPtrs = LevelEditor.Pin()->GetAllSceneOutliners();for (TWeakPtr<ISceneOutliner> SceneOutlinerPtr : SceneOutlinerPtrs){if (TSharedPtr<ISceneOutliner> SceneOutlinerPin = SceneOutlinerPtr.Pin()){SSceneOutliner* outliner = (SSceneOutliner*)SceneOutlinerPin.Get();TArray<FName> folders;folders.Add(FolderName);outliner->PasteFoldersBegin(folders);outliner->PasteFoldersEnd();}break;}}}
}
这里之前试了下FActorFolders接口发现有问题，应该使用SSceneOutliner的接口进行创建。
2.创建Widget进行测试
编译好后，创建对应编辑器UI进行测试，调用该节点即可：
最终呼出该菜单，点击后即可在场景内创建对应文件夹模板。
