Modified to directly invoke objc via cgo for darwin. This adds a tray_darwin.c source file and blends the original systray.Client standalone app functionality with that of the cgo-compiled integrated objc from github.com/cratonica/trayhost (which did a dock icon/menu for darwin and required cgo for all platforms).

This carries two important ramifications:

1. Darwin app (and linux, eventually) must be compiled on target platform (or cross-compiled for cgo, when/if that happens officially)
2. Systray.Run() must be executed on the main thread in order to play nice with Cocoa

Also includes support for adding menu items with Go callbacks.

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Systray (Trayicon/Menu Extras)

Cross platform systray for golang

Instead of gui program, "go-program + systray + web-console" might be a interesting choise.

Platform

Mac: avalid
Win: avalid
Linux: coming soon

Run example

Mac:

cd example
go run icons/mac systray

How it works

Win:
[your code in go] -> [systray: win32 api call in go]

Mac:
[your code in go] -> [systray.Server in go] -(tcp)-> [systray.Client in objc]

Linux:
[your code in go] -> [systray.Server in go] -(tcp)-> [systray.Client in c]