Blueprint Reflection C++ Reference

Get name and path information about an object's Blueprint from C++ with UBPReflection.

Header: BPReflection.h · Class: UBPReflection

In Blueprints these functions describe the Blueprint that called them, because the node passes in Self. In C++, they describe whatever object you pass in, based on its class. For example outputs, see the Blueprint Reflection nodes.

Name	Description
GetCallingBlueprintName	The object's class name.
GetCallingBlueprintPath	The Blueprint's package path, or the class path.
GetCallingBlueprintInfo	Name and path details in one call.

NOTE

Passing this from a C++ class describes the object's runtime class. If the object is an instance of a Blueprint subclass, you get the Blueprint, not your C++ class.

GetCallingBlueprintName

static FString UBPReflection::GetCallingBlueprintName(const UObject* WorldContextObject);

Name	Description
WorldContextObject	The object to describe.

Returns: The name of the object's class. For a Blueprint, this is the generated class name, ending in _C. Returns Unknown if WorldContextObject is null.

GetCallingBlueprintPath

static FString UBPReflection::GetCallingBlueprintPath(const UObject* WorldContextObject);

Name	Description
WorldContextObject	The object to describe.

Returns: In editor builds (WITH_EDITOR), when the object's class was generated by a Blueprint, the Blueprint's package path, like /Game/MyGame/BP_Player. Otherwise, the class's path name, like /Game/MyGame/BP_Player.BP_Player_C, or /Script/<Module>.<Class> for a native class. Returns an empty string if WorldContextObject is null.

GetCallingBlueprintInfo

static void UBPReflection::GetCallingBlueprintInfo(const UObject* WorldContextObject, FString& OutBlueprintName, FString& OutContentPath, FString& OutFullPath, FString& OutFullReferencePath);

Name	Description
WorldContextObject	The object to describe.
OutBlueprintName	Receives the Blueprint asset's name, or the class name when no Blueprint is available.
OutContentPath	Receives the package path with /Game/ replaced by Content/. Empty when no Blueprint is available.
OutFullPath	Receives the full package path. Empty when no Blueprint is available.
OutFullReferencePath	Receives the Blueprint asset's object path, or the class path when no Blueprint is available.

The Blueprint details are only available in editor builds, for classes generated by a Blueprint. If WorldContextObject is null, OutBlueprintName is Unknown and the other outputs are empty.

Example

#include "BPReflection.h"

void AMyActor::LogIdentity() const
{
    FString BlueprintName, ContentPath, FullPath, ReferencePath;
    UBPReflection::GetCallingBlueprintInfo(this, BlueprintName, ContentPath, FullPath, ReferencePath);

    UE_LOG(LogTemp, Log, TEXT("%s (%s)"), *UBPReflection::GetCallingBlueprintName(this), *FullPath);
}