I'm having this error while compiling
Severity Code Description Project File Line Suppression State Error (active) E1696 Can not open source file "d3dx9.h" INDIGO c: \ Users \ spirit \ Documents \ C ++ \ SOUTHERN \ INDIGO \ INDIGO \ Main \ Main.h 18
Main.h
#pragma once
#pragma warning(disable:4996)
#include <Windows.h>
#include <iostream>
#include <memory>
#include <fstream>
#include <string>
#include <map>
#include <vector>
#include <TlHelp32.h>
#include <WinInet.h>
using namespace std;
#include <d3d9.h>
#include <d3dx9.h>
#pragma comment(lib,"d3d9.lib")
#pragma comment(lib,"d3dx9.lib")
#pragma comment(lib, "wininet.lib")
#include "../config.h"
#include "../CSX/CSX.h"
#include "../SDK/SDK.h"
using namespace SDK;
#include "../Settings/Settings.h"
#include "../Engine/Engine.h"
#include "../Cheat/Client.h"