[Matplotlib-users] Checking if figure is on screen

[Bartosz T. <b.t...@bi...>]

Hi,

I am writting an application in which I update dynamically the state  
of the figures. When I am done I call the Figure.canvas.draw function  
to redraw the figure. However, when the window was previously closed  
by the user the update can be skipped.

Is there a way to tell from a figure handle if the figure is shown on  
screen or not?

Currently, I solve this problem with a callback which sets the figure  
handle to None on figure close event. However, I guess there might be  
a more direct way of doing that. What would you suggest?

Thanks a lot for your help.

Bartosz