Build the tray context menu as a Compose-reactive Kotlin DSL — items, checkable items, submenus, dividers, conditional content.

The tray menu is a Kotlin DSL inside the Tray() trailing lambda. It participates in Compose recomposition: flip a mutableStateOf and labels, checkmarks, icons, even entire branches appear or vanish — natively.

TL;DR

Item, CheckableItem, SubMenu, Divider.
Every item type accepts an icon (ImageVector, Painter, DrawableResource, or @Composable).
Conditional if (…) branches are first-class — the menu is just code.

Items

Tray(icon = Icons.Default.Favorite, tooltip = "App") {
    Item(label = "Open settings") { openSettings() }
    Item(label = "Disabled", isEnabled = false) {}
    Item(label = "Export", icon = Icons.Default.Upload) { export() }
}

Checkable items

Native checkmark style on each platform:

var notifications by remember { mutableStateOf(true) }
var darkMode by remember { mutableStateOf(false) }

Tray(icon = Icons.Default.Favorite, tooltip = "App") {
    CheckableItem(label = "Notifications", checked = notifications) {
        notifications = it
    }
    CheckableItem(label = "Dark mode", icon = Icons.Default.DarkMode, checked = darkMode) {
        darkMode = it
    }
}

Submenus

Nested submenus, any depth:

Tray(icon = Icons.Default.Favorite, tooltip = "App") {
    SubMenu(label = "Tools", icon = Icons.Default.Build) {
        Item(label = "Terminal") { openTerminal() }
        Item(label = "File manager") { openFiles() }
        SubMenu(label = "More") {
            Item(label = "Calculator") { openCalc() }
        }
    }
}

Dividers

Tray(icon = Icons.Default.Favorite, tooltip = "App") {
    Item(label = "Show window") { show() }
    Divider()
    Item(label = "Settings") { settings() }
    Item(label = "About") { about() }
    Divider()
    Item(label = "Quit") { exitProcess(0) }
}

Reactive menus

Conditional items, dynamic labels — write it like any Compose tree:

var isConnected by remember { mutableStateOf(false) }
var showAdvanced by remember { mutableStateOf(false) }

Tray(icon = Icons.Default.Wifi, tooltip = "Network") {
    Item(label = if (isConnected) "Disconnect" else "Connect") {
        isConnected = !isConnected
    }

    CheckableItem(label = "Advanced options", checked = showAdvanced) {
        showAdvanced = it
    }

    if (showAdvanced) {
        Divider()
        SubMenu(label = "Advanced") {
            Item(label = "DNS settings") {}
            Item(label = "Proxy") {}
        }
    }

    Divider()
    Item(label = "Quit") { exitProcess(0) }
}

The native menu rebuilds itself when the state mutates. No refresh() call, no diffing on your side.

Tray menu DSL