Unreal Engine 4.x Scripting with C++ Cookbook - Second Edition

How it works...

Our new delegate signature uses a slightly different macro for declaration. Note the _OneParam suffix at the end of DECLARE_DELEGATE_OneParam. As you'd expect, we also need to specify what type our parameter will be. Just like when we created a delegate without parameters, we can create an instance of the delegate as a member of our GameMode class.

Delegate signatures can have either a global or class scope, but not a function body (as the documentation states). You can find more information about this at https://docs.unrealengine.com/en-US/Programming/UnrealArchitecture/Delegates.

Then, we create a new type of DelegateListener: one that is expecting a parameter to be passed into the function that it binds to the delegate. ...