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"Robert DeLaurentis" <[email protected]> wrote
The local function change_volume(v) requires the argument v to operate
properly,
but I'm unclear where the value of that argument is being set or why the
code fails
without it.
def change_volume(v):
track.set_volume(volume.get())
volume_scale = Scale(app,
variable = volume,
from_ = 0.0,
to = 1.0,
resolution = 0.1,
command = change_volume,
label = "Volume",
orient = HORIZONTAL)
I'm not familiar with the wodget in question but it looks like the command
callback
expects to pass a parameter to the callback function. Therefore the
function needs
to provide a placeholder even though it doesn't use it!
You would need to find the documentation for the widget to confirm that
theory
however.
A Google seartch threw up this:
http://infohost.nmt.edu/tcc/help/pubs/tkinter/scale.html
Which seems to confirm my theory :-)
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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