[TOC] ## 概述 可見監聽文件或目錄變更 ## 示例 ``` #include <QCoreApplication> #include <QFileSystemWatcher> #include <QDebug> int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); // 創建一個 QFileSystemWatcher 對象 QFileSystemWatcher watcher; // 要監視的目錄或文件的路徑 QString pathToWatch = "/path/to/your/directory"; // 添加要監視的目錄或文件 watcher.addPath(pathToWatch); // 連接文件或目錄發生變化時觸發的信號到槽函數 QObject::connect(&watcher, &QFileSystemWatcher::directoryChanged, [&](const QString &path) { qDebug() << "Directory changed:" << path; }); QObject::connect(&watcher, &QFileSystemWatcher::fileChanged, [&](const QString &file) { qDebug() << "File changed:" << file; }); qDebug() << "Watching directory:" << pathToWatch; return a.exec(); } ```