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

How to do it...

1. Open the main header file for your project; for example, if your project's name is Chapter_11, you'll open Chapter_11.h. Add the following line of code:

#pragma once#include "CoreMinimal.h"DECLARE_LOG_CATEGORY_EXTERN(LogCh11, Log, All);

As defined in AssertionMacros.h, there are three arguments to this declaration, which are as follows:

• CategoryName: This is the log category name being defined (LogCh11 here)
• DefaultVerbosity: This is the default verbosity to use on log messages
• CompileTimeVerbosity: This is the verbosity to bake into compiled code

2. Inside the main .cpp file for your project (Chapter_11.cpp in our case), include the following line of code:

#include "Chapter_11.h"#include "Modules/ModuleManager.h"IMPLEMENT_PRIMARY_GAME_MODULE( ...