Qt Reference Documentation

Porting Guides

A number of guides and documents are available that cover porting issues, from detailed coverage of API differences between Qt 3 and Qt 4 to platform and tool-specific documentation.

Moving from QSA to Qt Script

Moving from Qt 3 to Qt 4

Porting advice for authors of new and existing Qt 3 applications.

Porting Qt Applications to Qt for Embedded Linux

Porting UI Files to Qt 4

Information about changes to the UI file format in Qt 4.

Porting to Graphics View

Hints and tips to assist with porting canvas applications to the Graphics View framework.

Porting to Qt 4

An overview of issues and techniques to consider when porting from Qt 3 to Qt 4.

Porting to Qt 4 - Drag and Drop

An overview of the porting process for applications that use drag and drop.

Porting to Qt 4 - Virtual Functions

An overview of changes to virtual functions in Qt 4.

qt3to4 - The Qt 3 to 4 Porting Tool