foreword

UE has encapsulated the ini read and write functions, we only need a few simple steps to read and write ini files

1. Create a new C++ file

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Here we choose the Blueprint Function Library type

2. Write code

2.1 header file h file

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// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "RwTxtFiles.generated.h"

/**
 * 
 */
UCLASS()
class SKILLDEMO_API URwTxtFiles : public UBlueprintFunctionLibrary
{
    
    
	GENERATED_BODY()
	
public:


	UFUNCTION(BlueprintCallable, Category = "Read and Write File")
	static void ReadIniValue(FString Section,FString inKey, FString& outValue);

	UFUNCTION(BlueprintCallable, Category = "Read and Write File")
	static bool WriteIni(FString newSection, FString newKey, FString newValue);



};

2.2 cpp files

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// Fill out your copyright notice in the Description page of Project Settings.


#include "RwTxtFiles.h"
#include "FileHelpers.h"


void URwTxtFiles::ReadIniValue(FString Sectoin, FString inKey, FString& outValue)
{
    
    
	if (!GConfig)
		return;

	GConfig->GetString(*Sectoin, *inKey, outValue, GGameIni);

}

bool URwTxtFiles::WriteIni(FString newSection, FString newKey, FString newValue)
{
    
    
	if(!GConfig)
		return false;

	GConfig->SetString(*newSection,*newKey,*newValue,GGameIni);
	return true

}

3. Function description

Now GConfigit is packaged by UE, and the last parameter GGameIniis the file that UE has created for us. The specific path is as follows:
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