UWidgetComponent未在Blueprint编辑器中显示详细信息

Question

为什么在蓝图编辑器中没有任何overheadDialogueWidgetComponent详细信息可供编辑？

头：

class ABasePaperCharacter : public APaperCharacter
{
    GENERATED_BODY()
private:
    UDialogueComponentWrapper* dialogueComponentWrapper;
...

CPP：

ABasePaperCharacter ::ABasePaperCharacter ()
{
    this->dialogueComponentWrapper = NewObject<UDialogueComponentWrapper>();
    this->dialogueComponentWrapper->SetUpDialogueComponents(FObjectInitializer::Get(), this->GetRootComponent());
...

头：

UCLASS()
class UDialogueComponentWrapper : public UObject
{
    GENERATED_BODY()    
public:
    void SetUpDialogueComponents(const FObjectInitializer& objectInitializer, USceneComponent* componentToAttachTo);
private:
    UPROPERTY(Instanced, EditAnywhere, BlueprintReadWrite, Category = "Dialogue", Meta = (AllowPrivateAccess = true))
    UOverheadDialogueWidgetComponent* overheadDialogueWidgetComponent;

...

CPP：

void UDialogueComponentWrapper::SetUpDialogueComponents(const FObjectInitializer& objectInitializer, USceneComponent* componentToAttachTo)
{
    this->overheadDialogueWidgetComponent = objectInitializer.CreateDefaultSubobject<UOverheadDialogueWidgetComponent>(objectInitializer.GetObj(), TEXT("Dialogue widget component"));
    this->overheadDialogueWidgetComponent->AttachToComponent(componentToAttachTo, FAttachmentTransformRules::KeepRelativeTransform);
}

头：

UCLASS()
class ECDD_API UOverheadDialogueWidgetComponent : public UWidgetComponent
{
    GENERATED_BODY()    
};

Answer 1

由于您将此组件公开给蓝图，因此它不应该是私有的。它们必须受到保护或公开才能暴露给BP（您仍然可以从代码中使用它们）。想象一下BP将APaperCharacter作为父类。 UE将创建它自己的APaperCharacter派生的C ++类，并试图向您展示它自己的属性。由于您的组件是私有的，因此生成的类没有看到它，因此它在“详细信息”面板中不可见。

我相信UE也会在C ++编译期间警告你，标有UPROPERTY(..)的字段不应该是私有的。

Answer 2

警告，这里没有答案，只有失败......

<强> ABasePaperCharacter：

UCLASS()
class ECDD_API ABasePaperCharacter : public ABasePaperCharacter
{
    GENERATED_BODY()
public:
    ABasePaperCharacter()
    {
        this->dialogueComponentWrapper = CreateDefaultSubobject<UDialogueComponentWrapper>(TEXT("Dialogue component wrapper"));
        this->dialogueComponentWrapper->AttachToComponent(this->GetCapsuleComponent(), FAttachmentTransformRules::KeepRelativeTransform);
        this->dialogueComponentWrapper->SetUpDialogueComponents(FObjectInitializer::Get(), this->dialogueComponentWrapper);
    }
private:
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Dialogue", Meta = (AllowPrivateAccess = true))
        UDialogueComponentWrapper* dialogueComponentWrapper;
}

UDialogueComponentWrapper - 注意USceneComponent继承：

UCLASS()
class UDialogueComponentWrapper : public USceneComponent
{
    GENERATED_BODY()
public:
    UDialogueComponentWrapper();
    void SetUpDialogueComponents(const FObjectInitializer& objectInitializer, USceneComponent* componentToAttachTo)
    {
        this->overheadDialogueWidgetComponent = objectInitializer.CreateDefaultSubobject<UOverheadDialogueWidgetComponent>(objectInitializer.GetObj(), TEXT("Dialogue widget component"));
        this->overheadDialogueWidgetComponent->AttachToComponent(componentToAttachTo, FAttachmentTransformRules::KeepRelativeTransform);
    }
private:
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Dialogue", Meta = (AllowPrivateAccess = true))
        UOverheadDialogueWidgetComponent* overheadDialogueWidgetComponent;
};

<强> UOverheadDialogueWidgetComponent：

UCLASS()
class ECDD_API UOverheadDialogueWidgetComponent : public UBaseWidgetComponent
{
    GENERATED_BODY()
};

以上所有结果都是这样的：

我仍然遇到组件未在其详细信息面板中显示详细信息的问题，但至少我现在可以更改详细信息。

我仍然不知道为什么我在细节面板中看不到组件的属性......但至少我可以继续制作我的游戏。