On Thu Jun 2 23:07:12 BST 2011, Brickle Macho wrote: > I am trying to do is display an image, and then using drag-selection to > select a sub-image for later processing. Eventually I want to be able > to select multiple regions and tag each region for appropruate back end > processing, but for now just being able to select one sub-image would be > good. I can display an image, but don't know how to implement > drag-selection (think it is also know as rubber band selection). I am > assuming I will need to write some mouse-callbacks or something. My > search-fu has failed me and I haven't been able to find any examples to > study. Can someone give me any pointers to which widgets I should be > using and perhaps where to find a sample program I can study.
There didn't seem to be much in the PyQt examples to show this - the itemviews/chart example does use QRubberBand to allow the user to select data, but that's not the best example to learn this technique from. I quickly wrote an example that does part of what you want: http://www.diotavelli.net/PyQtWiki/Selecting_a_region_of_a_widget Hope this helps, David _______________________________________________ PyQt mailing list [email protected] http://www.riverbankcomputing.com/mailman/listinfo/pyqt
