C++ GUI Programming with Qt 4

Chapter 12. Input/Output

• Reading and Writing Binary Data

• Reading and Writing Text

• Traversing Directories

• Embedding Resources

• Inter-Process Communication

The need to read from or write to files or other devices is common to almost every application. Qt provides excellent support for I/O through QIODevice, a powerful abstraction that encapsulates “devices” capable of reading and writing blocks of bytes. Qt includes the following QIODevice subclasses:

QFile	Accesses files in the local file system and in embedded resources
QTemporaryFile	Creates and accesses temporary files in the local file system
QBuffer	Reads data from or writes data to a QByteArray
QProcess ...