Zoom GUI in fltk backend

[John W. Eaton]

On 20-Jul-2009, Søren Hauberg wrote:

| man, 20 07 2009 kl. 23:00 +0300, skrev Shai Ayal:
| > How about the attached patch? (it's against current hg so it includes
| > Soren's previous patch). I used the code from octavede. It now
| > zooms/pans the axes in which the mouse pointer is in. It will not
| > change the current axes, as I'm not sure I like this idea.
| > 
| > Comments?
| 
| This works quite nice. It would be great if something like this would be
| pushed.

It doesn't seem to work for me at all.  Clicking in the plot causes 

  ca=-1.28198

to be printed in the command prompt window (this looks like the ID of
the current axes) but I can't seem to make zooming work.  I've tried
clicking and dragging with all three mouse buttons.  Any clues?  What
could I be doing wrong?  My test plot is

  x = -10:0.01:10;
  plot (x, sin (x));

jwe