Messagebox

// dllmain.cpp : Defines the entry point for the DLL application.
#include <windows.h>
#include <stdio.h>
#include "pch.h"

BOOL WINAPI DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID lpvReserved)
{
    switch (fdwReason)
    {
    case DLL_PROCESS_ATTACH:
        MessageBox(NULL, L"DLL INjection!", L"BOX", MB_OKCANCEL);
        break;
    }

    return TRUE;
}