Johnston Jiaa wrote: > I'm creating a drawing program, like MS Paint in Tkinter. I bound > the <B1-Motion> event to my Canvas object. The function it's bound > to creates an oval at the event's x and y attributes. > > This works fine if the user is dragging slowly, but if he does a > sudden dragging motion, the ovals are very far apart. Is there any > way to fix this? > > Johnston Jiaa > Windows (and I assume other GUIs such as X) don't report every single location the mouse was, when it's moving quickly. So you'll have to interpolate a line between the two points and draw a series of ovals. This can be seen in Paint if you use the pencil tool and then make u-shaped motions. If you do it fast enough, they'll be a series of angled lines, rather than one smooth U. There may be a way to get around this, but you might have to go to the driver level (depending on where it's leaving off the points. The mouse itself might only sample its location every few milliseconds, and this may be causing the issue, in which case you'd have to update your hardware.) That being said, you should still post your code, because there may be something that's causing the mouse events to be delayed for whatever reason. > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > >
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