Greetings all, in order to learn about PyQt I have been trying to port the "drag-and-drop robot" example from the Qt 4.2 distribution to Python. My current version can be found at http://ultr23.vub.ac.be/~lieven/pyqt/dragdroprobot-1.py and http://ultr23.vub.ac.be/~lieven/pyqt/head.png
There are a number of issues that I haven't solved yet, and they are marked in the comments in the code. The most important ones are: 1) The QVariant system to pass color and image objects through the drag-and-drop mechanism. I can convert a QColor or QImage object to a QVariant, but I don't see the way to do the opposite (NOTES 1 and 3). 2) The C++ code uses "if (... || (qgraphicsitem_cast<RobotHead *>(this)) && ..." to test if a RobotPart object is an instance of the RobotHead subclass or not. I have cobbled some Python together to do the same test based on the __class__ attribute (NOTE 5), but it's not very elegant. 3) The animation does not work, and when the program exits, it prints the message "QObject::startTimer: QTimer can only be used with threads started with QThread". I guess it is necessary to explicitly create a QThread in Python, but my attempts so far have not succeeded. I'll continue looking into all these issues, but any suggestions would be very welcome. Cheers, -- Lieven Buts _______________________________________________ PyQt mailing list [email protected] http://www.riverbankcomputing.com/mailman/listinfo/pyqt
