Re: How prevent wxglade overwriting button handler

On 6/19/17 1:36 PM, Brendan Simon (eTRIX) wrote:
> I don't understand why I have to deactivate "Overwrite existing 
> sources".  That doesn't make sense to me. I've added some extra 
> widgets to the design and now I want to regenerate sources, so I need 
> to overwrite them.
If you interpret this option that way, then it would not be too useful 
as only the first time any code would be written.
I think, the label should be changed to something like "Overwrite user 
code" together with some better tooltip help, though.

> I ended up sub-classing the app and binding the widgets, as I have 
> asyncio coroutines working at that level that need to interact with 
> the gui.
>
> Still wxglade is generates the print statement that outputs to stdio, 
> whether you want it or not.  If it is commented out or deleted, it 
> gets regenerated on the next regeneration of the sources.
This way, you have two handlers, both bound to the event and therefore 
also both are executed:
  - generated by wxGlade in the generated class and bound by the 
generated class
  - written and bound by you in your application

So either don't define a handler in wxGlade or override the generated 
handler in a derived class.
Probably I should have written in my last message:

class ExampleFrame(ExampleGUI.ExampleFrame):
     def __init__(self, app):
         self.app = app
         ExampleGUI.ExampleFrame.__init__(self, None, wx.ID_ANY, "")

     # XXX override generated handlers here
     def on_button(self, event):
         #print("Event handler 'on_button' not implemented!")
         self.app.do_something_useful()
         event.Skip()

Regards,

Dietmar

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