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custom widgets and classes

Code Magnets

We’ve started to create the initializer code for you, but there are still a few
parts missing. See if you can work out where the missing code fragments
fit. Here is the code that creates a SoundPanel() object. Position the
code magnets properly to complete the method:

def __init__(self, app, mixer, sound_file):
Frame.__init__(self, app)
Because SoundPanel() inherits from

tkinter’s Frame(), you need to be sure
to initialize the Frame() BEFORE you
initialize the SoundPanel().

track_button = Checkbutton( , variable = ,

command = self.track_toggle, text = sound_file)
track_button.pack(side = LEFT)

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

resolution = 0.1, command = ,

label = "Volume", orient = HORIZONTAL)
volume_scale.pack(side = RIGHT)

volume = DoubleVar()
self.
self
change_volume
self.
self. self. track_playing
track = mixer.Sound(sound_file)
self.
track_playing = IntVar() self

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