wails/v3/examples/systray-clock/main.go

package main

import (
	"log"
	"runtime"
	"time"

	"github.com/wailsapp/wails/v3/pkg/application"
	"github.com/wailsapp/wails/v3/pkg/icons"
)

func main() {
	app := application.New(application.Options{
		Name:        "Systray Clock",
		Description: "System tray clock with live tooltip updates",
		Assets:      application.AlphaAssets,
		Mac: application.MacOptions{
			ActivationPolicy: application.ActivationPolicyAccessory,
		},
		Windows: application.WindowsOptions{
			DisableQuitOnLastWindowClosed: true,
		},
	})

	systemTray := app.SystemTray.New()

	// Use the template icon on macOS so the clock respects light/dark modes.
	if runtime.GOOS == "darwin" {
		systemTray.SetTemplateIcon(icons.SystrayMacTemplate)
	}

	menu := app.NewMenu()
	menu.Add("Quit").OnClick(func(ctx *application.Context) {
		app.Quit()
	})
	systemTray.SetMenu(menu)

	updateTooltip := func() {
		systemTray.SetTooltip(time.Now().Format("15:04:05"))
	}
	updateTooltip()

	go func() {
		ticker := time.NewTicker(time.Second)
		defer ticker.Stop()
		for {
			select {
			case <-ticker.C:
				updateTooltip()
			case <-app.Context().Done():
				return
			}
		}
	}()

	if err := app.Run(); err != nil {
		log.Fatal(err)
	}
}