Hi, I'm using Wt's drag and drop system in this fashion:
When I drag a widget to a destination widget, the destination widget responds to the drop by using the source widget's pointer (passed from drop event) to get useful data such as a key to a database record. Then, the destination widget deletes the source. Here's the problem: When dragging a source widget to a destination widget twice at almost the same time (while Wt is 'loading'), a crash happens (program tries to access a source widget that's already deleted). I did a (quick) grep and it seems as if the source widget's implementation does not delete its entry in WApplication::encodedObjects_ before being destroyed by the destination widget. As a result, WApplication::decodeObject() is giving me an invalid pointer to a source widget instead of a null one. If I could put a function like: app_->eraseEncodedObject(this) in the destructor of my source widgets, my destination widget will be able to ignore drop events that carry null pointers to source widgets. Will Wt provide a function like the above so that encodedObjects_ can be managed by the user? I appreciate your time. Regards, David ------------------------------------------------------------------------------ _______________________________________________ witty-interest mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/witty-interest
