Re: [Pythoncard-users] wxChoice stringSelection field

[Alex T. <al...@tw...>]

Albert J. Boehmler wrote:

>I do have a minor issue, though. I have an application which is using
>PythonCard version: 0.8.1 and wxPython version: 2.5.3.1 on Windows. It
>simulates output strings for a sensor and uses many "Choice" components.
>I am using a timer to build and send an output string based on the
>values of the GUI elements once a second.
>
>The issue I am running into is that the "stringSelection" values are
>read while the drop-down list is active and the highlighted value is
>sent. I'd like to only send the value when an item has been selected;
>until a different item has been selected, the original value should be
>sent. Is there any simple way to do this? I've noticed that the ComboBox
>doesn't do this, but I'd rather not use that if I can avoid it.
>
>  
>

I created an example like you describe (I think - want to check this is 
what you currently do). Resource file has just a single "Choice" 
component called "Choice1" (oops - just noticed that I used selection 
instead of stringSelection - but should be the same .... )

> #!/usr/bin/python
> from PythonCard import model, timer
>
> class MyBackground(model.Background):
>
>     def on_initialize(self, event):
>         # if you have any initialization
>         # including sizer setup, do it here
>         self.timer = timer.Timer(self.components.Choice1, -1)
>         self.timer.start(1000)
>         pass
>         
>     def on_Choice1_timer(self, event):
>         print self.components.Choice1.selection
>
>
> if __name__ == '__main__':
>     app = model.Application(MyBackground)
>     app.MainLoop()

Then changed it by adding a variable (self.choice, which is initialized 
to -1, and is set only when the "select" event happens. I think this 
does what you want.

> #!/usr/bin/python
>
> """
> __version__ = "$Revision: 1.5 $"
> __date__ = "$Date: 2004/04/30 16:26:12 $"
> """
>
> from PythonCard import model, timer
>
> class MyBackground(model.Background):
>
>     def on_initialize(self, event):
>         # if you have any initialization
>         # including sizer setup, do it here
>         self.timer = timer.Timer(self.components.Choice1, -1)
>         self.timer.start(1000)
>         self.choice = -1
>         pass
>         
>     def on_Choice1_select(self, event):
>         self.choice = self.components.Choice1.selection
>
>     def on_Choice1_timer(self, event):
>         print self.components.Choice1.selection, self.choice
>
>
> if __name__ == '__main__':
>     app = model.Application(MyBackground)
>     app.MainLoop()




-- 
Alex Tweedly       http://www.tweedly.net




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