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from guizero import App, Box, Waffle, Slider, Text
def change_dim(slider):
print("Changing size to {}x{} ".format(g_width.value, g_height.value))
grid.resize(g_width.value, g_height.value)
app = App("Changing size")
grid = Waffle(app)
controls = Box(app, layout = "grid")
# Width
width_text = Text(controls, text="Width", grid=[0,0])
g_width = Slider(controls, start=0, end=20, command=change_dim, grid=[1,0])
g_width.value = 4
# Height
height_text = Text(controls, text="Height", grid=[0,1])
g_height = Slider(controls, start=0, end=20, command=change_dim, grid=[1,1])
g_height.value = 4
app.display()
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