不多說，在代碼中。

/**
* @file directory_walker.h
* @brief 遍歷目錄功能分為遍歷函數和動作類，動作類可根據不同用途重寫，返回false表示中斷遍歷。
* @author lemene
*/

#ifndef DIRECTORY_WALKER_HPP
#define DIRECTORY_WALKER_HPP

#include <string>

class DirectoryWalker {
public:
    virtual bool EnterDirectory(const std::string& dirpath) { return true; }
    virtual bool LeaveDirectory(const std::string& dirpath) { return true; }
    virtual bool VisitFile(const std::string& filepath) { return true; }
};

bool WalkDirectory(const std::string& root, DirectoryWalker& walker);

#endif // DIRECTORY_WALKER_HPP

/**
* @file directory_walker.cpp
* @author lemene
*/
#include "directory_walker.hpp"

#include <windows.h>

bool WalkDirectory(const std::string& root, DirectoryWalker& walker)
{
    bool goon = true;
    std::string path = root + "\\*.*";
    WIN32_FIND_DATAA    wfd;
    HANDLE hFind = FindFirstFileA(path.c_str(), &wfd);

    if ((hFind != INVALID_HANDLE_VALUE))
    {
        do {
            if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
            {
                if (strcmp(wfd.cFileName, ".") != 0 && strcmp(wfd.cFileName, "..") != 0)
                {
                    std::string dirpath = root + "\\" + wfd.cFileName;

                    goon = goon && walker.EnterDirectory(dirpath);
                    goon = goon && WalkDirectory(dirpath, walker);
                    goon = goon && walker.LeaveDirectory(dirpath);
                   
                }
            }
            else
            {
                goon = goon && walker.VisitFile(root + "\\" + wfd.cFileName);
            }

            if (!goon) break;

        } while (FindNextFileA(hFind, &wfd) != 0);

        FindClose(hFind);
    }

    return goon;
}