flet: Page.window_destroy very slow

import flet


def main(page: flet.Page):
    def quit_window(e):
        page.window_destroy()
    page.add(flet.TextButton(text='quit', on_click=quit_window))


flet.app(target=main)

It takes ~5 second to destory the window, frozen during that period. Is that possible to speed up that process?

About this issue

Original URL
State: closed
Created 2 years ago
Comments: 20 (6 by maintainers)

Most upvoted comments

For desktop apps “fletd” in Golang using webservices was replaced with a light-weight Fletd shim written in Python. There is a little latency right now and Python code is not “flooding” with a lot of window events when you move it, resize it, etc.

FeodorFitsner on Jan 23, 2023

Yep. It was 300 ms throttling, now it’s 0.

FeodorFitsner on Jan 23, 2023

But what if, in the button’s on_click event callback, you try to hide the window first…then destroy it. Have you tried?

Yes and it works. My initial concern is it may slow down things in a loop. Then I realized I shouldn’t be coding that way, since only a single window is supported and I shouldn’t create and destroy it many times.

quan787 on Sep 19, 2022

No, sys.exit() doesn’t quit the script at all.

Also, the window may need to be reopened, by let’s say a system tray icon. Now I’m using page.window_visible to hide the window instead of destroying it as a more proper way, but it hurts the exiting speed nevertheless.

So maybe you can add hiding to the beginning of page.window_destroy() , and let it quit quietly?

quan787 on Sep 15, 2022