Python tcl/tk PAGE callbacks

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Linux

Python

GUI

Hi forum,

I'm trying to get the hang of creating software in python with a GUI in Tcl/Tk with the help of GUI designer "PAGE". I guess the question only targets those familiar with PAGE. But maybe every python programmer can help. Take the fact that I can not tell as indicator how little I already know in python.

Imagine a simple GUI with a button and a canvas. I can attach a method to a button press. That is tested and the method runs as expected. Now I would like to show the result of the method on the canvas.

How am I supposed from within PAGE to attach a method to canvas' Update event?
How do I trigger canvas' Update event? Is there something similar to .NET's Control.Invalidate() method?

This is targeted to run on Linux.

Thank you in advance,


lukeer

What I have tried:

+ several looks at all the properties in PAGE's property editor for my canvas instance.
+ searched the PAGE Documentation[^] but I have not yet read all of it.