New submission from Greg Couch <gr...@cgl.ucsf.edu>: Sometime around Python 2.5.4, Menu.delete was changed to delete associated entry commands (and thus plug a memory leak). This broke Pmw.OptionMenu because it already had similar code, so when Menu.delete was called, the commands were already gone, and a TclError was raised saying "can't delete Tcl command".
While Pmw could be patched to workaround this bug, it seems strange that Tkinter.Misc.deletecommand unconditionally deletes commands it knows nothing about. All uses of deletecommand in Tkinter refer to commands that were Tkinter.Misc._register'ed, so they should appear in the widget._tclCommands list. So the proper solution is to only delete commands that are still registered with the widget. Repeat by: import Pmw om = Pmw.OptionMenu() om.pack() om.setitems(['a', 'b']) om.setitems(['b']) ---------- components: Tkinter files: delcmd.patch keywords: patch messages: 89262 nosy: gregcouch severity: normal status: open title: Menu deletecommand fails if command is already deleted type: crash versions: Python 2.5, Python 2.6, Python 2.7, Python 3.0, Python 3.1 Added file: http://bugs.python.org/file14265/delcmd.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue6270> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
