How to bind a function pointer (void* or TFunction) to delegate (non-dynamic non-multicast) in C++?

Development Programming & Scripting
1

I’m having trouble with binding a pointer to a function (with a specific signature) to a delegate (with the same signature).

There is an existing delegate, declared like DECLARE_DELEGATE_TwoParams(DelegateName, VarType1, VarType2).

I need to be able to bind a function declared like void Function(VarType1, VarType2) to it. The function is not a member of the class that is doing the binding, so I cannot access it directly in a &Class::Function way, like most examples I’ve been able to find.

Rather, the function has to be a variable, which I assume is a function pointer like void(*CallbackFunction)(VarType1, VarType2), or a TFunction like TFunction<void(VarType1, VarType2)> CallbackFunction.

What should the input variable type be for the function I’m trying to bind, and what is the syntax and the correct bind function ( BindSP / BindRaw / BindUObject etc) to make this work? I assume the function should look roughly like:

static void GenericBinder(UObject* CallingObject, TFunction<void(VarType1, VarType2)> CallbackFunction)
{
 // get delegate, store in var called DelegateToBindTo
 DelegateToBindTo.BindRaw(CallingObject, &CallbackFunction);
}

Anything similar that I’ve tried gives me massive compilation errors. What am I doing wrong? Many thanks in advance.

2

Hello! You can just add function declaration in some .h file, include it in CPP where you want to bind delegate and just use global resolve operator ::

MyDelegate.BindStatic(&::MyGlobalFunction);