[Matplotlib-users] NavigationToolbar2GTK not working on hand made subplot instance

[<phi...@ho...>]

Hi John and list,

Sorry to take your time.

from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as 
FigureCanvas
from matplotlib.backends.backend_gtkagg import NavigationToolbar2GTKAgg 
as NavigationToolbar

when i do:

   |fig = Figure(figsize=(5,4), dpi=100)|||
   |ax = fig.add_subplot(111)             # 1|
   |t = arange(0.0,3.0,0.01)|
   |s = sin(2*pi*t)|
   |ax.plot(t,s)|||||
   |canvas = FigureCanvas(fig)|
   |vbox.pack_start(canvas)|
   |toolbar = NavigationToolbar(canvas, win)|
   |vbox.pack_start(toolbar, False, False)
   |

|I can zoom on the figure and it is redrawn.

|My problem is i need to create a subplot instance myself:

   |fig = Figure(figsize=(5,4), dpi=100)
   ax = Subplot(fig,111)         ||        # 1||
   t = arange(0.0,3.0,0.01)
   s = sin(2*pi*t)
   ax.plot(t,s)
   fig.add_subplot(ax)                  ||# 2 -> To display the hand
   subplot in the figure.|
   |canvas = FigureCanvas(fig)
   vbox.pack_start(canvas)
   toolbar = NavigationToolbar(canvas, win)
   vbox.pack_start(toolbar, False, False)|

The application is crashing. GTK seems to fail displaying the canvas.

Is it a bug or am i doing something wrong?

Thanks a lot for the answer,
Regards,
Philippe Collet