Drag and drop in Tkinter. How difficult is it?

[Marc]

Hi all,

I was thinking about developing a drag and drop application and was curious
how difficult it is to do. Basically I want to have a set of objects that I
move around the screen and drop into place.

Anyone else ever done it? Got any tips?

Thanks,
Marc

[Cameron Laird]

In article <Ap********************@comcast.com>,
Marc <lo********@comcast.net> wrote:

Hi all,

I was thinking about developing a drag and drop application and was curious
how difficult it is to do. Basically I want to have a set of objects that I
move around the screen and drop into place.

[Christos TZOTZIOY Georgiou]

On Thu, 04 Sep 2003 09:14:08 -0000, rumours say that cl****@lairds.com
(Cameron Laird) might have written:

In article <Ap********************@comcast.com>,
Marc <lo********@comcast.net> wrote:
[Marc]

I was thinking about developing a drag and drop application and was curious
how difficult it is to do. Basically I want to have a set of objects that I
move around the screen and drop into place.

- Cameron -LOTS of applications--several I've written, I
know--do this sort of thing. You'll need to
learn about bind(), and most likely the events
<1>
<B1-Motion>
<ButtonRelease-1>
in particular: you'll teach <1> to start a
drag, <B1-Motion> to display the dragged object
moving around the screen, and <ButtonRelease-1>
to finish the drop.

Have you read <URL: http://
groups.google.com/groups?as_q=drag+drop+tkinter&as_ugroup=comp.lang. python >?

I should add that drag and drop in the same application can be done
easily, but it's hard to do it between your application and others (too
much window manager dependencies...)
--
TZOTZIOY, I speak England very best,
Microsoft Security Alert: the Matrix began as open source.

[Cameron Laird]

In article <qe********************************@4ax.com>,
Christos "TZOTZIOY" Georgiou <tz**@sil-tec.gr> wrote:

[Marc]

Excellent. Thanks for the head start.

A couple of questions.

1) If I want to have a moving object, and not just a cursor that
represents the moving object, do I need to continually pack and unpack
the widget that holds the object and redraw it to give it the
appearance of moving? I know sometimes the redrawing can cause
applications to flicker too much, destroying the effect. I don't know
if there's an optimum way to do this.

2) Also, in reading I found an old module called Tkdnd (drag and
drop). It was an experimental module that was supposed to be updated
but never was. Now I can't find any more information on it. Does this
module still exist or work?

Thanks,
Marc

[Michael Peuser]

"Marc" <lo********@comcast.net> schrieb im Newsbeitrag
news:Ap********************@comcast.com...

Hi all,

I was thinking about developing a drag and drop application and was curious how difficult it is to do. Basically I want to have a set of objects that I move around the screen and drop into place.

Anyone else ever done it? Got any tips?

There is a nice example here using an as well nice Tree widget:
http://www.esrf.fr/computing/bliss/g...Tree/Tree.html

Kindly
Michael

[Cameron Laird]

In article <43**************************@posting.google.com >,
Marc <mn******@airmail.net> wrote:

[Cameron Laird]

In article <43**************************@posting.google.com >,
Marc <mn******@airmail.net> wrote:

[Michael Peuser]

"Marc" <mn******@airmail.net> schrieb im Newsbeitrag
news:43**************************@posting.google.c om...

Excellent. Thanks for the head start.

A couple of questions.

I think they will be answered when you look at the link (Tree.py) I posted
yesterday ;-)

Kindly
Michael P