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PySide GUI Application Development by Venkateshwaran Loganathan

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Chapter 4. Events and Signals

In the chapters that we have seen so far, we tried out various implementations of readily available functions are extended by the Qt objects. In this chapter, we will look into some of the internal implementation working concepts of those functions. Being an event-driven toolkit, events and event delivery play an important role in the Qt architecture. We will start this chapter by discussing events and signals, their implementation, and will go on to discuss handling drag-and-drop events, and drawing functionalities.

Event management

An event in Qt is an object inherited from the abstract QEvent class which is a notification of something significant that has happened. Events become more useful in creating custom widgets ...

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