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.

Qt3DRender::QSceneLoader	Provides the facility to load an existing Scene
QBuffer	QIODevice interface for a QByteArray
QDataStream	Serialization of binary data to a QIODevice
QDir	Access to directory structures and their contents
QFile	Interface for reading from and writing to files
QFileDevice	Interface for reading from and writing to open files
QFileInfo	System-independent file information
QFileSystemWatcher	Interface for monitoring files and directories for modifications
QIODevice	The base interface class of all I/O devices in Qt
QProcess	Used to start external programs and to communicate with them
QProcessEnvironment	Holds the environment variables that can be passed to a program
QResource	Interface for reading directly from resources
QSaveFile	Interface for safely writing to files
QSettings	Persistent platform-independent application settings
QStorageInfo	Provides information about currently mounted storage and drives
QTemporaryDir	Creates a unique directory for temporary use
QTemporaryFile	I/O device that operates on temporary files
QTextStream	Convenient interface for reading and writing text
QUrl	Convenient interface for working with URLs
QUrlQuery	Way to manipulate a key-value pairs in a URL's query
QSocketNotifier	Support for monitoring activity on a file descriptor
QImageReader	Format independent interface for reading images from files or other devices
QImageWriter	Format independent interface for writing images to files or other devices
QTextDocumentWriter	Format-independent interface for writing a QTextDocument to files or other devices