UE4/UE5中 Package包里的对象 视口里的对象

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UGameViewportClient* ViewportClient = World->GetGameViewport()
UGameViewportClient

TArray<class UObject*> LoadedObjects;
  FWorldContext.LoadedLevelsForPendingMapChange //TArray<class ULevel*> LoadedLevelsForPendingMapChange;

        /** Outside pointers to CurrentWorld that should be kept in sync if current world changes  */
        TArray<struct FFullyLoadedPackagesInfo> PackagesToFullyLoad;
        TArray<UWorld**> ExternalReferences;
       
FWorldContext.PackagesToFullyLoad       
FFullyLoadedPackagesInfo.LoadedObjects;

UWidgetTree,RootWidget
UWidgetTree,AllWidgets

E:\Epic\UE_4.27\Engine\Source\Runtime\CoreUObject\Public\UObject\Package.h
TArray<UPackage*> GetExternalPackages() const;
UObjectBaseUtility::GetPackage()