This chapter covers reading and writing files, traversing the file system, and interacting with external programs.
QTextStream classes make it simple to read and write files. These classes take care of issues such as byte ordering and text encodings, ensuring that Qt applications running on different platforms can read and write each other’s files.
Many applications need to traverse directories or get information about a file. Qt’s
QFileInfo classes makes this possible.
In some situations, it is necessary to run external programs from within a GUI program. Qt’s
QProcess class allows ...