How can I open the GTK Inspector in Darktable on Windows?

I want to customize Darktable via CSS, and I really need GTK Inspector to isolate the various UI elements to customize.

So I’ve tried all of the following:

1. Read through this: GTK Inspector - GNOME Developer Documentation
2. Set the environment variable GTK_DEBUG to interactive and then starting Darktable - followed by pressing Control-Shift-D
3. Following this guide: The GTK Project - A free and open-source cross-platform widget toolkit
A. Installing MSYS2
B. Running pacman -S mingw-w64-ucrt-x86_64-gtk4
C. Running pacman -S mingw-w64-ucrt-x86_64-toolchain base-devel
D. Copied the contents of the gtk-4.0 folder to share/themes/Windows10/gtk-4.0
E. Copied the Adwaita icon theme
4. Tried following this: GitHub - wingtk/gvsbuild: GTK stack for Windows and failing
5. Too much more to list…

Is there any chance someone can point me in the right direction towards getting GTK Inspector to run on my Windows 11 box? I really want to make my own Darktable theme.

Any advice or guidance would be extremely appreciated!

Best,
Joseph

Only using GTK inspector on linux, so can’t tell you if it is possible on Windows, but darktable uses GTK3, maybe this is your issue ?

The darktable shortcut system intercepts ctrl-shift-D, so you have to use it when that isn’t active, for example while in the preferences dialog.