Cannot override built-in flet icon in title bar when running application (Windows) -- no packaging

[flamesjames]

Description

I haven't been able to find documentation or examples on how to override the built-in flet icon in the window title bar when running my python application. I've tried multiple methods from threads found online (1) and (2), including one where a maintainer described a method that seemed to work for them but no luck with either. I went thru the flet discussion boards as well and couldn't find any answers to this issue.

To be clear, creating an assets/icons directory and adding my own favicon.png did not work. I was still left with the default flet icon. Is there any easy way to override this for any time you run the application (without packaging)?

Describe the results you received:

Describe the results you expected:

My own defined app icon located within my assets directory.

Additional information you deem important (e.g. issue happens only occasionally):
Should work running app via command line or IDE.

Flet version (pip show flet):

Name: flet
Version: 0.3.2
Summary: Flet for Python - easily build interactive multi-platform apps in Python
Home-page: 
Author: 
Author-email: Appveyor Systems Inc. <hello@flet.dev>
License: MIT
Requires: beartype, oauthlib, packaging, repath, requests, watchdog, websocket-client

Operating system:

Windows 11 Home

Additional environment details:

[FeodorFitsner]

Desktop app icon can be customized on packaging phase only: https://flet.dev/docs/guides/python/packaging-desktop-app#customizing-package-icon

[clstaudt]

@FeodorFitsner Can we turn this into a feature request?

[flamesjames]

@FeodorFitsner Can we turn this into a feature request?

I also think that this would be valuable

[eeintech]

Hello there, I support this request as distributing through PyPI as wheel package isn't compatible with packaging using PyInstaller/flet pack option.

I need to look for workarounds for my app: sparkmicro/Ki-nTree#124
But I'd rather get this icon to be showing at runtime if possible, so much easier to distribute!

[eeintech]

Moreover, the icon support appears to be only for Windows and MacOS?

I get this in the PyInstaller output when running flet pack app.py --icon logo.png command on my Ubuntu 22.04 laptop (with Pillow installed):

WARNING: Ignoring icon; supported only on Windows and macOS!

[ndonkoHenri]

To change the icon of your app without having to package, use page.window.icon, and specify a full path to the .ico icon file.
It works on Windows only for now.

[eeintech]

@ndonkoHenri Awesome thanks for the update!