Qt - meta object code

Question

What do we mean by the meta object code when relating to the Meta Object Compiler (moc) in Qt?

Thanks.

Answer 1

Meta objects enhance programming languages by creating new or manipulate existing objects. They provide functionalities a language does not actually have by itself. The Meta Objects are interpreted either by compile time or run time. In Qt and C++ it is done during compile time by the Meta Object Compiler (moc).

An example case is the usage of the signal/slot concept.