NAME
qt20fix - Helps clean namespace when porting an app from Qt1 to Qt2
SYNTAX
qt20fix myapp.cpp
DESCRIPTION
Qt 2.x is namespace-clean, unlike 1.x. Qt now uses very few global
identifiers. Identifiers like red, blue, LeftButton, AlignRight,
Key_Up, Key_Down, NoBrush etc. are now part of a special class Qt
(defined in qnamespace.h), which is inherited by most Qt classes.
Member functions of classes that inherit from QWidget, etc. are totally
unaffected, but code that is not in functions of classes inherited from
Qt, you must qualify these identifiers like this: Qt::red,
Qt::LeftButton, Qt::AlignRight, etc.
The qt/bin/qt20fix script helps to fix the code that needs adaption,
though most code does not need changing.
Compiling with -DQT1COMPATIBILITY will help you get going with Qt 2.x -
it allows all the old "dirty namespace" identifiers from Qt 1.x to
continue working. Without it, you’ll get compile errors that can easily
be fixed by searching this page for the clean identifiers.
AUTHORS
TrollTech <http://www.trolltech.com/>