Re: [Visualpython-users] color-changing buttons

[Bruce S. <Bru...@nc...>]

Sigh. That module definitely needs work. If you look at controls.py 
you'll see that a button is constructed from 5 boxes and a label. Until 
and unless the controls module is improved, the only way to achieve the 
desired effect is to change these individual elements (e.g. 
buttonname.button.color = something). Ugh. Obviously a better scheme 
would be to change the button class to honor all desired changes, but 
here's a specific example within the present framework:

from visual.controls import *

s = True

def switch():
     global s
     if s:
         b.text = "Off"
         b.button.color = color.cyan
     else:
         b.text = "On"
         b.button.color = color.red
     s = not s

c = controls()
b = button(text="On", color=color.red, action=lambda: switch())
while 1:
     rate(100)
     c.interact()

Bruce Sherwood

Lenore Horner wrote:
> I'd like my buttons to change colors when they've received a button  
> press.  I can get an apparent color change by recreating the button.   
> However, if I change the text , I see both texts stacked on top of  
> each other, so I think I'm just piling up the buttons.  I've tried using
> 
> buttonname.color=color.newcolor
> 
> without success.  I have tried
> 
> buttonname.visible=False
> del buttonname
> 
> and the button doesn't disappear.
> 
> So in general it's looking to me like buttons don't behave the way  
> ordinary objects do.  Is this correct?
> 
> Lenore
> 
> 
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