[Qt] 打开文件夹 Windows

bool ok = QDesktopServices::openUrl(QUrl("c:/users/administrator/desktop/dir"));

 有些文件夹打不开，例如 C:UsersAdministrator。

 把QUrl  换成QUrl::fromLocalFile 即可

bool ok = QDesktopServices::openUrl(QUrl::fromLocalFile("c:/users/administrator/desktop/dir"));