PyQt
Get flash to fully experience Pearltrees
Here is the code, with comments, for our backend, called todo.py . Hopefully, we will not have to look at it again until much later in the tutorial!
PyQt by Example
QGraphicsScene
This is not really part of my PyQt by Example series but since it's a totally unrelated topic that would be impossible to connect to it, but is still a PyQt tutorial and follows the same concept... whatever, here it is. In this tutorial I will explain QGraphicsScene (QGS for short) and its related classes. What are they for, you may ask? Well, the answer is: they are for cool stuff . You don't need QGS for CRUD.
PyQt is a set of Python bindings for Nokia's Qt application framework and runs on all platforms supported by Qt including Windows, MacOS/X and Linux. There are two sets of bindings: PyQt v4 supports Qt v4; and the older PyQt v3 supports Qt v3 and earlier. The bindings are implemented as a set of Python modules and contain over 300 classes and over 6,000 functions and methods. Like Qt, PyQt v4 is available on all platforms under a variety of licenses including the GNU GPL (v2 and v3) and a commercial license. Unlike Qt, PyQt v4 is not available under the LGPL.
PyQt
Events are an important part in any GUI program. Events are generated by users or by the system. When we call the application's exec_() method, the application enters the main loop.
