How to use the guizero.CheckBox function in guizero

def test_enable():
    a = App()
    c = CheckBox(a, "foo")
    enable_test(c)
    a.destroy()

def test_display():
    a = App()
    c = CheckBox(a, "foo")
    display_test(c)
    a.destroy()

def test_update_command():
    a = App()

    callback_event = Event()
    def callback():
        callback_event.set()

    c = CheckBox(a, "foo")

    c.tk.invoke()
    assert not callback_event.is_set()

    c.update_command(callback)
    c.tk.invoke()
    assert callback_event.is_set()
    callback_event.clear()

    c.update_command(None)
    c.tk.invoke()
    assert not callback_event.is_set()

    a.destroy()

def test_getters_setters():
    a = App()
    c = CheckBox(a, "foo")

    assert c.text == "foo"
    c.text = "bar"
    assert c.text == "bar"

    assert not c.value
    c.value = True
    assert c.value

    a.destroy()

from guizero import App, CheckBox

def checked():
    print(check.value)

app = App()
check = CheckBox(app, "check this", command=checked)
app.display()

def set_framerate():
    global framerate
    framerate = slider_framerate.value
    
def sh_rotation():
    sh.set_rotation(int(combo_rotation.value))

app = App(title="8x8 Grid Editor",layout="grid",height=540, width=500)
box_top = Box(app, layout="grid", grid=[0,0,5,1])
button_go_start = PushButton(box_top, command=go_start,grid=[0,0,2,1], text = "<<", image=HOME+"/RPi_8x8GridDraw/images/endl.png")
button_left = PushButton(box_top, command=left,grid=[2,0,2,1], text = "<",image=HOME+"/RPi_8x8GridDraw/images/left.png")
button_play = PushButton(box_top, command=play,grid=[4,0,2,1], text = "PLAY", image=HOME+"/RPi_8x8GridDraw/images/play.png")
button_stop = PushButton(box_top, command=stop,grid=[6,0,2,1], text = "STOP",enabled=False, image=HOME+"/RPi_8x8GridDraw/images/stop.png")
button_right = PushButton(box_top, command=right,grid=[8,0,2,1], text = ">",image=HOME+"/RPi_8x8GridDraw/images/right.png")
button_go_end = PushButton(box_top, command=go_end,grid=[10,0,2,1], text = ">>",image=HOME+"/RPi_8x8GridDraw/images/endr.png")
checkbox_repeat = CheckBox(app, text=" Repeat",grid=[6,0,1,1])
box_framerate = Box(app, layout="grid", grid=[7,0,2,1])
box_framerate.set_border(0,"#ff0000")
slider_framerate = Slider(box_framerate, command=set_framerate, grid=[0,0],start=1, end=25)
text_slider = Text(box_framerate, text="Framerate (fps)", grid = [0,1], size=10)


matrix = Waffle(app,height=8,width=8,dim=30,command=p_clicked,color="black",grid=[0,1,7,7])
palette = Waffle(app,height=10, width=1, dim =20, command = col_select,grid=[7,1,1,7])
palette.set_pixel(0, 0, "red")
palette.set_pixel(0,1, (0,255,0))
palette.set_pixel(0,2, "blue")
palette.set_pixel(0,3, "yellow")
palette.set_pixel(0,4, (100,100,100))
palette.set_pixel(0,5, "white")
palette.set_pixel(0,6, (255,0,255))
palette.set_pixel(0,7, "orange")

app = App(title="different sizes", width = 700, height=700)

text = Text(app, "lets change some sizes", width=20, height=2)

text_box = TextBox(app, "some text", width=50)

slider = Slider(app, width=300, height=30)

button = PushButton(app, width=20, height=2)

pic = Picture(app, image="guizero.gif", width=400, height=50)

combo = Combo(app, ["martin", "laura", "rik"], width="fill", height="fill")

check = CheckBox(app, "tick me", width=20, height=3)
check.bg = "blue"

button_group = ButtonGroup(app, ["cheese", "onion", "crisps"], 1, width=20, height=9)
button_group.bg = "darkgrey"

box = Box(app, width=100, height=100)
box.border = True

box.bg = "red"

app.display()

from guizero import App, ButtonGroup, CheckBox, Combo, PushButton, Slider, Text, TextBox

a = App(title="colors")
text = Text(a, text="colors")
check = CheckBox(a, "check me")
combo = Combo(a, ["red", "blue"])
button = PushButton(a)
slider = Slider(a)
textbox = TextBox(a, text="or colours")
bgroup = ButtonGroup(a, ["cheese", "ham", "salad"], 1)

a.bg = (255,255,0)
text.text_color = "red"
text.text_size = 30
text.font = "verdana"
text.bg = "green"
check.bg = "#d41789"
combo.bg = "blue"
combo.text_color = "green"
combo.text_size = 24
button.bg = "black"

lastNameText = TextBox(app, width=25, grid=[1,1])
countryCombo = Combo(app, options=['United Kingdom', 'United States', 'France'], selected='United Kingdom', grid=[1,2])

addressText1 = TextBox(app, width=25, grid=[1,3])
addressText2 = TextBox(app, width=25, grid=[1,4])
addressText3 = TextBox(app, width=25, grid=[1,5])
addressText4 = TextBox(app, width=25, grid=[1,6])
addressText5 = TextBox(app, width=25, grid=[1,7])
addressText6 = TextBox(app, width=25, grid=[1,8])

jobTitleLabel = Text(app, text="TBA", grid=[1,9], size=10)

salaryLabel = Text(app, text="Salary : ", grid=[2,0,2,1], align="left", size=10)
salaryScale = Slider(app, start=10000, end=100000, grid=[2,1,2,1], command=do_salaryScale, align="left")

fullTimeCheckBox = CheckBox(app, text="Full-time?", grid=[2,2,2,1], command=do_fullTimeCheckBox, align="left")
jobButtonGroup = ButtonGroup(app, options=["Programmer", "Developer", "Web Developer", "Designer"],
                             selected=0, grid=[2,3,2,4], command=do_jobButtonGroup, align="left")

okPushButton = PushButton(app, text="OK", command=do_okPushButton, grid=[2,9], padx=5, pady=5)
closePushButton = PushButton(app, text="Close", command=do_closePushButton, grid=[3,9], padx=5, pady=5)

app.display()

countryCombo = Combo(app, options=['United Kingdom', 'United States', 'France'], selected='United Kingdom', grid=[1,2])
box = Box(app, grid=[1,3], layout="grid")

addressText1 = TextBox(box, width=25, grid=[0,0])
addressText2 = TextBox(box, width=25, grid=[0,1])
addressText3 = TextBox(box, width=25, grid=[0,2])
addressText4 = TextBox(box, width=25, grid=[0,3])
addressText5 = TextBox(box, width=25, grid=[0,4])
addressText6 = TextBox(box, width=25, grid=[0,5])

jobTitleLabel = Text(app, text="TBA", grid=[1,4], size=10)

salaryLabel = Text(app, text="Salary : ", grid=[2,0], align="left", size=10)
salaryScale = Slider(app, start=10000, end=100000, grid=[2,1], command=do_salaryScale, align="left")

fullTimeCheckBox = CheckBox(app, text="Full-time?", grid=[2,2], command=do_fullTimeCheckBox, align="left")
jobButtonGroup = ButtonGroup(app, options=["Programmer", "Developer", "Web Developer", "Designer"],
                             selected=0, grid=[2,3], command=do_jobButtonGroup, align="left")
box1 = Box(app, grid=[2,4], layout="grid", align="left")
okPushButton = PushButton(box1, text="OK", command=do_okPushButton, grid=[0,0], padx=5, pady=5)
closePushButton = PushButton(box1, text="Close", command=do_closePushButton, grid=[2,0], padx=5, pady=5)


app.display()