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# Architecture

These documents describe aspects of Qt's architecture and design, including overviews of core Qt features and technologies.

Drag and Drop | An overview of the drag and drop system provided by Qt.
Events and Event Filters | A guide to event handling in Qt.
Format of the QDataStream Operators | Representations of data types that can be serialized by QDataStream.
Generic Algorithms | The <QtAlgorithms> header provides generic template-based algorithms.
Generic Containers | Qt's template-based container classes.
Global Qt Declarations | The <QtGlobal> header provides basic declarations and is included by all other Qt headers.
Implementing Atomic Operations | A guide to implementing atomic operations on new architectures.
Implementing Styles and Style Aware Widgets | An overview of styles and the styling of widgets.
Implicitly Shared Classes | Classes that use reference counting for fast copying.
Introduction to D-Bus | An introduction to Inter-Process Communication and Remote Procedure Calling with D-Bus.
Keyboard Focus | An overview of the keyboard focus management and handling.
Layout Classes | A tour of the standard layout managers and an introduction to custom layouts.
Meta-Object System | An overview of Qt's meta-object system and introspection capabilities. Qt's meta-object system provides the signals and slots mechanism for inter-object communication, run-time type information, and the dynamic property system.
Model/View Programming | A guide to the extensible model/view architecture used by Qt's item view classes.
Object Trees and Object Ownership | Information about the parent-child pattern used to describe object ownership in Qt.
Overview of Qt's Undo Framework |
QTestLib Manual | An overview of Qt's unit testing framework.
Qt Object Model | A description of the powerful features made possible by Qt's dynamic object model.
Qt Style Sheets | How to use style sheets to customize the appearance of widgets.
Qt's Property System | An overview of Qt's property system.
Rich Text Processing | An overview of Qt's rich text processing, editing and display features.
SQL Database Drivers | How to configure and install QtSql drivers for supported databases.
Signals and Slots | An overview of Qt's signals and slots inter-object communication mechanism.
The Coordinate System | Information about the coordinate system used by the paint system.
The Graphics View Framework | An overview of the Graphics View framework for interactive 2D graphics.
Thread Support in Qt | A detailed discussion of thread handling in Qt.
Timers | How to use timers in your application.
Unicode | Information about support for Unicode in Qt.
Why Doesn't Qt Use Templates for Signals and Slots? | The reasoning behind Qt's implementation of signals and slots.
Window Geometry | An overview of window geometry handling and management.