Page 390 -

custom widgets and classes

Begin by importing from tkinter import *
the libraries you
need to use in this import pygame
module.
Create a new function def create_gui(app, mixer, sound_file):
that contains the GUI- def track_toggle():
creating code from the
current program. if track_playing.get() == 1:
track.play(loops = -1)

else:

track.stop()

def change_volume(v):

track.set_volume(volume.get())

All of this code is part track = mixer.Sound(sound_file)
of the function, so it
needs to be indented. track_playing = IntVar()
track_button = Checkbutton(app, variable = track_playing,

command = track_toggle,
text = sound_file)

track_button.pack(side = LEFT)

volume = DoubleVar()

volume.set(track.get_volume())
volume_scale = Scale(variable = volume, from_ = 0.0, to = 1.0,

resolution = 0.1, command = change_volume,

label = “Volume", orient = HORIZONTAL)

volume_scale.pack(side = RIGHT)

you are here 4 355