有时候我们创建场景的时候，特定的Actor我们想给它一个特定的图标，便于观察。比方这样：
实现起来也非常easy。须要编写C++代码：
我们创建一个Actor，叫AMyActor。它包括一个Sprite(精灵)，这个精灵负责显示自己定义图标：代码例如以下
#pragma once#include "GameFramework/Actor.h"
#include "Components/BillboardComponent.h"
#include "MyActor.generated.h"/*** */
UCLASS()
class NANTOPDOWN_API AMyActor : public AActor
{GENERATED_UCLASS_BODY()//virtual void BeginPlay() OVERRIDE;UPROPERTY()TSubobjectPtr<UBillboardComponent> SpriteComponent;UTexture2D* SpriteTexture;};
#include "NanTopDown.h"
#include "MyActor.h"AMyActor::AMyActor(const class FPostConstructInitializeProperties& PCIP): Super(PCIP)
{struct FConstructorStatics{ConstructorHelpers::FObjectFinderOptional<UTexture2D> NoteTextureObject;FName ID_Notes;FText Name_Notes;FConstructorStatics(): NoteTextureObject(TEXT("Texture2D'/Game/Textures/MyIcon.MyIcon'")), ID_Notes(TEXT("Notes")), Name_Notes(NSLOCTEXT("SpriteCategory", "Notes", "Notes")){}};static FConstructorStatics Cs;TSubobjectPtr<USceneComponent> SceneComponent = PCIP.CreateDefaultSubobject<USceneComponent>(this, TEXT("SceneComp"));RootComponent = SceneComponent;RootComponent->Mobility = EComponentMobility::Static;#if WITH_EDITORONLY_DATASpriteComponent = PCIP.CreateEditorOnlyDefaultSubobject<UBillboardComponent>(this, TEXT("Sprite"));if (SpriteComponent){SpriteComponent->Sprite = Cs.NoteTextureObject.Get();SpriteComponent->SpriteInfo.Category = Cs.ID_Notes;SpriteComponent->SpriteInfo.DisplayName = Cs.Name_Notes;SpriteComponent->AttachParent = RootComponent;SpriteComponent->Mobility = EComponentMobility::Static;}
#endif
}AMyActor仅仅有一个UBillboardComponent组件。增加场景就能够看到自己定义的图片了。
參考文章：https://wiki.unrealengine.com/Add_in_editor_Icon_to_your_Custom_Actor