Am Freitag, 27. April 2007 23:43 schrieb Tony Willis: > I hope that someone can help me with the following. I'm attempting > to drag and drop some floating point numbers from one widget to > another with PyQt3. The easiest way to do the dragging would appear to be > with the QTextDrag object. So I convert my floating point numbers > to a python string via the 'struct' module 'pack' method - see > line 30 in the 'startDrag' callback of the following script. > > However when I unpack in the > 'dropEvent' callback I get incorrect values > (1.0569533721655998e-307, 1.7246384989945063e-307) instead of > the expected (1.2, 3.5). I'm obviously screwing up some > ascii / unicode / binary translation thingy somewhere, as the > methods work ok when I drag straight ascii text such as 'abcd_xyz' > i.e. in that case the QTextDrag.decode call in line 19 will give > text as 'abcd_xyz'.
Without looking into your code, have you considered using Decimals, and send the str() versions? Sure, they're not the fastest types in town, but unless you're not sending more than a few thousands of values on a decent system, they should do well without the usual float pains. Pete _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
