On 2009-03-14, Peter Otten <__pete...@web.de> wrote: > Well, I don't know where the ymid[...] values come from. If you can > guarantee that ymid[track_num] - ymid[track_num-1] > 50 at some point > you could reschedule loadFile() from within loadFile() and return > immediately as long as that condition is not met.
They're multiplied up from canvas_height = self.canvas.winfo_height() so I guess mainloop already think it's idle, while grid is still taking 10ms to work out what goes where. It's not a specifically canvas thing, because to the left of the canvas there is a frame (called trackbar) which has the same height, and self.trackbar.winfo_height() gives the same effects. Your suggestion would also defend me against small screens, or midi- -files with large numbers of tracks (I'll impose a max_retries)... Thanks, Regards, Peter -- Peter Billam www.pjb.com.au www.pjb.com.au/comp/contact.html -- http://mail.python.org/mailman/listinfo/python-list
