Does voila support display widgets in callback func or how?

[xdyuchen]

Hello!
I want to show some widget in a callback event, code is run ok in notebook but not show on voila.

support? or how to show widgets in callback func?

import ipywidgets as widgets

slider = widgets.FloatSlider(description="$x$", value=4)
text = widgets.FloatText(disabled=True, description="$x^2$")


def compute(*ignore):
    text.value = str(slider.value ** 2)


slider.observe(compute, "value")


def check_support(*ignore):
    test_text = widgets.Text()
    #     not showing
    display(test_text)
    text.value = 0.1


check_btn = widgets.Button(description="check_support")
display(check_btn)

check_btn.on_click(check_support)

widgets.VBox([slider, text])

[jtpio]

@xdyuchen and using the Output widget?

So the code above becomes:

import ipywidgets as widgets

slider = widgets.FloatSlider(description="$x$", value=4)
text = widgets.FloatText(disabled=True, description="$x^2$")
out = widgets.Output()


def compute(*ignore):
    text.value = str(slider.value ** 2)


slider.observe(compute, "value")

@out.capture()
def check_support(*ignore):
    test_text = widgets.Text()
    #     not showing
    display(test_text)
    text.value = "0.1"


check_btn = widgets.Button(description="check_support")
display(check_btn)

check_btn.on_click(check_support)

display(widgets.VBox([slider, text]))
out