Creating a UENUM( )

C++ enum are very useful in typical C++ code. UE4 has a custom type of enumeration called UENUM(), which allows you to create an enum that will show up in a drop-down menu inside a Blueprint that you are editing.

How to do it...

1. Go to the header file that will use the UENUM() you are specifying, or create a file EnumName.h.
2. Use code of the form:

   UENUM()
   enum Status
   {
     Stopped     UMETA(DisplayName = "Stopped"),
     Moving      UMETA(DisplayName = "Moving"),
     Attacking   UMETA(DisplayName = "Attacking"),
   };

3. Use your UENUM() in a UCLASS() as follows:

   UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Status)
   TEnumAsByte<Status> status;
   

How it works…

UENUM() show up nicely in the code editor as drop-down menus in the Blueprints editor from which you can only select one of a few values.