Input/Output and Networking

These Qt Core classes are used to handle input and output to and from external devices, processes, files etc., as well as manipulating files and directories.

• QBuffer: The QBuffer class provides a QIODevice interface for a QByteArray.

• QDataStream: The QDataStream class provides serialization of binary data to a QIODevice.

• QDir: The QDir class provides access to directory structures and their contents.

• QFile: The QFile class provides an interface for reading from and writing to files.

• QFileDevice: The QFileDevice class provides an interface for reading from and writing to open files.

• QFileInfo: The QFileInfo class provides system-independent file information.

• QFileSystemWatcher: The QFileSystemWatcher class provides an interface for monitoring files and directories for modifications.

• QIODevice: The QIODevice class is the base interface class of all I/O devices in Qt.

• QProcess: The QProcess class is used to start external programs and to communicate with them.

• QProcessEnvironment: The QProcessEnvironment class holds the environment variables that can be passed to a program.

• QResource: The QResource class provides an interface for reading directly from resources.

• QSaveFile: The QSaveFile class provides an interface for safely writing to files.

• QSettings: The QSettings class provides persistent platform-independent application settings.

• QSocketNotifier: The QSocketNotifier class provides support for monitoring activity on a file descriptor.

• QStorageInfo: Provides information about currently mounted storage and drives.

• QTemporaryDir: The QTemporaryDir class creates a unique directory for temporary use.

• QTemporaryFile: The QTemporaryFile class is an I/O device that operates on temporary files.

• QTextStream: The QTextStream class provides a convenient interface for reading and writing text.

• QUrl: The QUrl class provides a convenient interface for working with URLs.

• QUrlQuery: The QUrlQuery class provides a way to manipulate a key-value pairs in a URL's query.

• Qt3DRender::QSceneLoader: Provides the facility to load an existing Scene.