On Thursday 16 August 2007 16:20, David Boddie wrote: > On Thu Aug 16 14:57:37 BST 2007, Johannes Lochmann wrote:
Hello David! Thank you for the quick and thorough response - that cleared things up mighty! > In the slots in your Widget class, you're just assigning the "txt" values > to the attributes in the instance of the Data class: > [...] > In C++, this would work perfectly because QString objects are copied when > they are modified, so your copies in the "data" object will be safe. > In Python, each QString is simply bound to the "a", "b" and "c" attributes. > When each slot returns, the QString is still referenced, but could be > changed elsewhere, and the "copy on write" semantics of Qt don't apply. OK, now knowing this particular detail made everything clear! > Basically, you have to explicitly copy the "txt" values passed to the > slots: > [...] > self.data.a = QString(txt) # or use unicode(txt) As I have to convert everything to utf-8 for database storage this is no big deal. Thank you for your quick help! Johannes _______________________________________________ PyQt mailing list [email protected] http://www.riverbankcomputing.com/mailman/listinfo/pyqt
