Awesome

systray

systray is a cross-platform Go library to place an icon and menu in the notification area.

Features

Supported on Windows, macOS, and Linux
Menu items can be checked and/or disabled
Most functions may be called from any goroutine

API

func main() {
	systray.Run(onReady, onExit)
}

func onReady() {
	systray.SetIcon(icon.Data)
	systray.SetTitle("Awesome App")
	systray.SetTooltip("Pretty awesome超级棒")
	mQuit := systray.AddMenuItem("Quit", "Quit the whole app")

	// Sets the icon of a menu item. Only available on Mac and Windows.
	mQuit.SetIcon(icon.Data)
}

func onExit() {
	// clean up here
}

See as well as CHANGELOG.

Note: this package requires cgo, so make sure you set CGO_ENABLED=1 before building.

Try the example app!

Have go v1.12+ or higher installed? Here's an example to get started on macOS:

git clone https://github.com/getlantern/systray
cd systray/example
env GO111MODULE=on go build
./example

On Windows, you should build like this:

env GO111MODULE=on go build -ldflags "-H=windowsgui"

Now look for Awesome App in your menu bar!

Awesome App screenshot

The Webview example

The code under webview_example is to demostrate how it can co-exist with other UI elements. Note that the example doesn't work on macOS versions older than 10.15 Catalina.

Platform notes

Linux

Building apps requires gcc as well as the gtk3 and libayatana-appindicator3 development headers to be installed. For Debian or Ubuntu, you may install these using:

sudo apt-get install gcc libgtk-3-dev libayatana-appindicator3-dev

On Linux Mint, libxapp-dev is also required.

If you need to support the older libappindicator3 library instead, you can pass the build flag legacy_appindicator when building. For example:

go build -tags=legacy_appindicator

To build webview_example, you also need to install libwebkit2gtk-4.0-dev and remove webview_example/rsrc.syso which is required on Windows.

Windows

To avoid opening a console at application startup, use these compile flags:

go build -ldflags -H=windowsgui

macOS

On macOS, you will need to create an application bundle to wrap the binary; simply folders with the following minimal structure and assets:

SystrayApp.app/
  Contents/
    Info.plist
    MacOS/
      go-executable
    Resources/
      SystrayApp.icns

When running as an app bundle, you may want to add one or both of the following to your Info.plist:

<!-- avoid having a blurry icon and text -->
	<key>NSHighResolutionCapable</key>
	<string>True</string>

	<!-- avoid showing the app on the Dock -->
	<key>LSUIElement</key>
	<string>1</string>

Consult the Official Apple Documentation here.

On macOS, it's possible to set the underlying NSStatusItemBehavior with systray.SetRemovalAllowed(true). When enabled, the user can cmd-drag the icon off the menu bar.