QT 实时监视文件夹

// 监控文件夹
void UpdateService::Monitor()
{
    QString sPluginsPath  = QString("%1/new").arg(QApplication::applicationDirPath());
    m_pluginWatcher = new QFileSystemWatcher();
    m_pluginWatcher->addPath(sPluginsPath);    // 添加监视文件的路径
    connect(m_pluginWatcher, SIGNAL(directoryChanged(QString)), this,SLOT(TriggerDirectoryChanged(const QString &)));
}

void UpdateService::TriggerDirectoryChanged(const QString &strpath)
{
  //strpath为监视文件路径  
}

需要添加头文件

#include <QFileSystemWatcher>