Okay, that’s not actually a compile error. That’s Rider trying to be helpful. You can’t always trust those squiggles because Rider isn’t always up to date on something. I will often have squiggles about missing function implementations that go away after I compile or a little time. Also, the actual compile errors you can copy/paste into a post in a way that’s more helpful to the people that are helping you. Just FYI for the future.
But in this case it’s fine.
So it’s telling you that the arguments don’t match. The first list is the arguments that you’re passing in: char[10], EInputEvent, TObjectPtr and the function pointer. C++ types make this a little difficult because of implicit conversions, but each one of the “Candidates considered” is telling you exactly that it can’t match the UserClass* Object parameter type to the TObjectPtr< > type of your member variable. This is because there’s no built in conversion operator for that so you’ve got to call the Sorry, that reasoning is wrong because there is a built inconversion to the raw pointer. What’s happening here is that template type deduction is failing because the template doesn’t know how to deal with a parameter that isn’t a pointer to figure out the type.Get function on TObjectPtr to get a raw UarmComponent* that you can pass to that function.
You have two options: Use the Get as I initially suggested or be explicit with the type so:
PlayerInputComponent->BindAction( "Blah", IE_Pressed, ourArm.Get(), &UarmComponent::PunchArm);
or
PlayerInputComponent->BindAction<UarmComponent>( "Blah", IE_Pressed, ourArm, &UarmComponent::PunchArm);