Sync dark/light theme with Windows 10

[d2phap]

Chris:

The latest version of windows has a dark theme, which changes elements such as context menus to be dark, so if I schedule windows to change to the dark theme automatically at night, it wouldn't affect ImageGlass, because all elements are skinned.​

[d2phap]

Need to research the message code for WndProc function
https://github.com/d2phap/ImageGlass/blob/master/Source/ImageGlass/frmMain.cs#L2065

[d2phap]

The configuration can be queried in the registry's following location:

• Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize
• Value: AppsUseLightTheme

When the value equals 0 (DWORD), it means it is in dark mode. Altering the value triggers immediately Windows Explorer to go/exit dark mode.

Some resources:

• https://stackoverflow.com/questions/53501268/win10-dark-theme-how-to-use-in-winapi
• https://github.com/ysc3839/win32-darkmode
• dark theme scrollbars microsoft/terminal#277 (comment)

[d2phap]

Implemented in v9.0 beta 4.
In igconfig.json file, you can specify the theme for dark and light mode:

{
  "DarkTheme": "Kobe",
  "LightTheme": "Kobe - Light",
}