Cannot call interface function

Development Programming & Scripting UI
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1

I have an interface and a class that attempts to implement it. I know that when you call a function through an interface, you have to use the Execute_ prefix with the method name. However, whenever I try to call a function using the Execute_ prefix, I get a build error:

class “IExampleInterface” has no memver “Execute_ExampleFunction”

Everything else about the interface works as intended. I just cannot get this to work. Below is my work.

IExampleInterface.h

#pragma once

#include "CoreMinimal.h"
#include "UObject/Interface.h"
#include "IExampleInterface.generated.h"

UINTERFACE(MinimalAPI)
class UExampleInterface : public UInterface
{
	GENERATED_BODY()
};

class FPROJECT_API IExampleInterface
{
	GENERATED_BODY()

public:
        void ExampleFunction(float ExampleParam);

};

What I’m trying to do

//This works with no error. ExampleClass implements IExampleInterface
IExampleInterface ExampleInterface = Cast<IExampleInterface>(ExampleClass);

if(ExampleInterface){
        //This throws the error previously mentioned at the top
        //Intellisense can see ExampleFunction,
        //however it cannot see Execute_ExampleFunction
        ExampleInterface->Execute_ExampleFunction(ExampleClass, 1.0f);
}

Any help is appreciated.

2

You can call the method without the “Execute_” prefix as it’s a C++ only method.
The “Execute_” prefix is generated for blueprints exposed methods and therefore you should only use the “Execute_” prefix in those methods.

3

Thanks for the reply. This worked for me, however I ran into other problems when doing that. I’ve since fixed them.