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
     
       SpriteComponent;	UTexture2D* SpriteTexture;	};
     

#include "NanTopDown.h"#include "MyActor.h"AMyActor::AMyActor(const class FPostConstructInitializeProperties& PCIP)	: Super(PCIP){	struct FConstructorStatics	{		ConstructorHelpers::FObjectFinderOptional
     
       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
      
        SceneComponent = PCIP.CreateDefaultSubobject
       
        (			this, TEXT("SceneComp"));		RootComponent = SceneComponent;		RootComponent->Mobility = EComponentMobility::Static;#if WITH_EDITORONLY_DATA		SpriteComponent = PCIP.CreateEditorOnlyDefaultSubobject
        
         (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