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# Qt3Support Module

The Qt3Support module provides classes that ease porting from Qt 3 to Qt 4. To include the definitions of the module's classes, use the following directive:

            #include <Qt3Support>

To link against the module, add this line to your qmake`.pro` file:

            QT += qt3support

Note: Since this module provides compatibility classes for diverse parts of the Qt 3 API, it has dependencies on the QtCore, QtGui, QtNetwork, QtSql, and QtXml modules.

This module is part of the Qt Desktop Edition and the Qt Open Source Edition. Most classes offered by this module are also part of the Qt Desktop Light Edition.

See also:
  Porting to Qt 4.