List all editor properties

Development Pipeline & Plugins Editor Scripting
1

Is there a way via the Python API to list all editor properties of a given object?

I found this for UObjects in c++ but couldn’t find a corresponding class or methodology in the Python docs:

Without such a method there doesn’t seem to be a good way to figure out what you can set via set_editor_property()

3

Good morning,

I did not find any possible way to do it in Python only, but here is the way I’m doing it using C++

.h



#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "CppLib.generated.h"
UCLASS()
class UNREALPYTHONPROJECT_API UCppLib : public UBlueprintFunctionLibrary {
    GENERATED_BODY()
public:
    UFUNCTION(BlueprintCallable, Category = "Unreal Python")
        static TArray<FString> GetAllProperties(UClass* Class);
};

.cpp



#include "CppLib.h"
#include "Runtime/CoreUObject/Public/UObject/UnrealType.h"
TArray<FString> UCppLib::GetAllProperties(UClass* Class) {
    TArray<FString> Ret;
    if (Class != nullptr) {
        for (TFieldIterator<UProperty> It(Class); It; ++It) {
            UProperty* Property = *It;
            if (Property->HasAnyPropertyFlags(EPropertyFlags::CPF_Edit)) {
                Ret.Add(Property->GetName());
            }
        }
    }
    return Ret;
}

And then in python:



import unreal
my_python_object = unreal.StaticMesh()
my_object_properties = unreal.CppLib.get_all_properties(my_python_object.get_class())
print my_object_properties
4

Running into a trove of issues trying to recreate this, among them this.


... 'UMyClass' uses undefined class 'UNREALPYTHONPROJECT_API'    ProjName    $ProjPath\MyClass.h    6

Besides a barrage from Visual Studio complaining about Syntax error with missing ‘;’ after UCLASS() etc…

Had to alter the Atomic.h as well seeing it was complaining about a missing ‘)’ and found others having same issue

My full code is currently


#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "MyClass.generated.h"

UCLASS()
class UNREALPYTHONPROJECT_API UMyClass : public UBlueprintFunctionLibrary {
    GENERATED_BODY()
public:
    UFUNCTION(BlueprintCallable, Category = "Unreal Python")
    static TArray<FString> GetAllProperties(UClass* Class);
};

MyClass.h


#include "MyClass.h"
#include "Runtime/CoreUObject/Public/UObject/UnrealType.h"

TArray<FString> UMyClass::GetAllProperties(UClass* Class) {
    TArray<FString> Ret;
    if (Class != nullptr) {
        for (TFieldIterator<UProperty> It(Class); It; ++It) {
            UProperty* Property = *It;
            if (Property->HasAnyPropertyFlags(EPropertyFlags::CPF_Edit)) {
                Ret.Add(Property->GetName());
            }
        }
    }
    return Ret;
}

MyClass.cpp

Any idea what I’m missing?

1 Like
5

This works great, thanks! Just a head’s up - in UE4.25 (or earlier) UPROPERTY has changed to FPROPERTY - VS2017 compiler complained.