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RE: Dark mode on Windows

From: Vince Salvino
Subject: RE: Dark mode on Windows
Date: Tue, 26 Oct 2021 04:29:29 +0000

All right everyone, thanks for all your help. I managed to work out the library 
loading issue, and now have it querying the preferred theme from the registry. 
I will submit shortly following the CONTRIBUTE guide.

Info and download: https://github.com/vsalvino/emacs

Patch: https://github.com/vsalvino/emacs/pull/1/files

It currently works as so:
* Queries if emacs is running on a supported version of Windows, and OS theme 
is set to "dark" (light is default).
* Applies system dark title bar
* Applies system dark scroll bars

The following is needed to "complete" the dark mode, but requires a lot more 
rabbit holes, so will have to be saved for a later date:
* Dark menu bar (no idea how to do this)
* Dark tool bar (probably same implementation as menu bar)

Feel free to debate among yourselves as to the meaning of life:
* Automatically switching the faces/theme to a light/dark theme. This would be 
cool but also kind of useless as most people configure their own theme anyhow. 
And nearly every other editor DOES NOT do this, so I think trying to 
automatically switch user settings is pointless. Maybe add a link on the splash 
screen to set your theme.
* Make sure themes support dark tab bars. Most do not style it (since it is a 
newer feature) so it still appears light even on a dark theme.
* I do not want to implement a watcher that receives system light/dark mode 
changes to dynamically update the window theme. Just restart emacs, it's not a 
big deal.

Vince Salvino

-----Original Message-----
From: Vince Salvino 
Sent: Sunday, October 24, 2021 6:27 PM
To: emacs-devel@gnu.org
Subject: Dark mode on Windows

Windows 10 has a system-wide "dark mode", which if supported by an app, can 
tell the app to use dark title bars, scrollbars, etc.

In a fit of rage after staring at the blinding white titlebar on my Emacs 
frame, I researched the issue and implemented "dark mode" in Emacs for Windows 
(the rage had been building for years).

Here is a work in progress, which seemingly works quite well, but needs a bit 
more work. Would anyone be able to help, or possibly help get such a feature 
merged in?

See README.md in my fork: https://github.com/vsalvino/emacs 

Vince Salvino

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