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feat: add {get|set}AccentColor on Windows (#47741)

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* feat: add setAccentColor on Windows

* refactor: unify GetSystemAccentColor

* refactor: remove redundant parsing

* chore: fixup documentation

* Update docs/api/browser-window.md

Co-authored-by: Will Anderson <andersonw@dropbox.com>

* Update docs/api/base-window.md

Co-authored-by: Will Anderson <andersonw@dropbox.com>

---------

Co-authored-by: Will Anderson <andersonw@dropbox.com>
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Shelley Vohr 2025-08-01 22:29:02 +02:00 • committed by GitHub
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37
docs/api/base-window.md
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@ -1260,6 +1260,43 @@ Sets the properties for the window's taskbar button.
> `relaunchCommand` and `relaunchDisplayName` must always be set
> together. If one of those properties is not set, then neither will be used.
#### `win.setAccentColor(accentColor)` _Windows_
* `accentColor` boolean | string - The accent color for the window. By default, follows user preference in System Settings.
Sets the system accent color and highlighting of active window border.
The `accentColor` parameter accepts the following values:
* **Color string** - Sets a custom accent color using standard CSS color formats (Hex, RGB, RGBA, HSL, HSLA, or named colors). Alpha values in RGBA/HSLA formats are ignored and the color is treated as fully opaque.
* **`true`** - Uses the system's default accent color from user preferences in System Settings.
* **`false`** - Explicitly disables accent color highlighting for the window.
Examples:
```js
const win = new BrowserWindow({ frame: false })
// Set red accent color.
win.setAccentColor('#ff0000')
// RGB format (alpha ignored if present).
win.setAccentColor('rgba(255,0,0,0.5)')
// Use system accent color.
win.setAccentColor(true)
// Disable accent color.
win.setAccentColor(false)
```
#### `win.getAccentColor()` _Windows_
Returns `string | boolean` - the system accent color and highlighting of active window border in Hex RGB format.
If a color has been set for the window that differs from the system accent color, the window accent color will
be returned. Otherwise, a boolean will be returned, with `true` indicating that the window uses the global system accent color, and `false` indicating that accent color highlighting is disabled for this window.
#### `win.setIcon(icon)` _Windows_ _Linux_
* `icon` [NativeImage](native-image.md) | string

37
docs/api/browser-window.md
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@ -1440,6 +1440,43 @@ Sets the properties for the window's taskbar button.
> `relaunchCommand` and `relaunchDisplayName` must always be set
> together. If one of those properties is not set, then neither will be used.
#### `win.setAccentColor(accentColor)` _Windows_
* `accentColor` boolean | string - The accent color for the window. By default, follows user preference in System Settings.
Sets the system accent color and highlighting of active window border.
The `accentColor` parameter accepts the following values:
* **Color string** - Sets a custom accent color using standard CSS color formats (Hex, RGB, RGBA, HSL, HSLA, or named colors). Alpha values in RGBA/HSLA formats are ignored and the color is treated as fully opaque.
* **`true`** - Uses the system's default accent color from user preferences in System Settings.
* **`false`** - Explicitly disables accent color highlighting for the window.
Examples:
```js
const win = new BrowserWindow({ frame: false })
// Set red accent color.
win.setAccentColor('#ff0000')
// RGB format (alpha ignored if present).
win.setAccentColor('rgba(255,0,0,0.5)')
// Use system accent color.
win.setAccentColor(true)
// Disable accent color.
win.setAccentColor(false)
```
#### `win.getAccentColor()` _Windows_
Returns `string | boolean` - the system accent color and highlighting of active window border in Hex RGB format.
If a color has been set for the window that differs from the system accent color, the window accent color will
be returned. Otherwise, a boolean will be returned, with `true` indicating that the window uses the global system accent color, and `false` indicating that accent color highlighting is disabled for this window.
#### `win.showDefinitionForSelection()` _macOS_
Same as `webContents.showDefinitionForSelection()`.