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How to pass interface ref as function parameter

Hello! How can I create Blueprint Implementable Event with Interface ref? I want it to have data type the same type as in the picture:

alt text

I've tryed this option:

 UFUNCTION(BlueprintImplementableEvent, BlueprintCallable, Category = "GlueHelper")
     TArray<AActor*> GetAllActorsOfInterface(const TScriptInterface<IInterface> &interfaceName);

But here is what I've got:

alt text

It has a type of interface, but not of class.

Product Version: UE 4.22
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снимок1.jpg (16.1 kB)
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asked Apr 12 '19 at 07:23 AM in C++ Programming

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you dont implement a interface by making a variable. you gotta go to the bp which needs to implement the interface and on the details panel of that bp(if you dont see the details panel or cant find what im gonna talk about click on class defaults on top). and then there will be a list of implemented interface. you can add your own interface in that list.

Interfaces will also be inherited if you inherit a BP.

here is a wiki page if you didnt understand what i said: https://docs.unrealengine.com/en-us/Engine/Blueprints/UserGuide/Types/Interface/UsingInterfaces

P.S: the above wiki page uses level blueprint as a example, u can use any other bp aswell.

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answered Apr 12 '19 at 09:45 AM

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avatar image SupDeity Apr 12 '19 at 09:47 AM

and i dont remember but i think you can get all class implementing a specific interface aswell and you can also use a reference to check whether it implements a interface or not. just search for it using the bp nodes.

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