github.com/djbckr/gotk

GO-TK

This is a go (golang) library that allows you to have a cross-platform UI using the Tcl/Tk library. Rather than interfacing directly to a C library, this uses the wish program when TK is installed on your computer. OSX already has it installed; for Windows and Linux, you'll need to install it. Information can be found here

How it works

As noted, the interface between go and Tcl/Tk is through the wish program. Your Go program sends commands to wish, and when you want information, such as the contents of an entry field, or a reaction to a button click, wish sends that information back to your Go program via network sockets. As a result, there is no messing about with unsafe memory management calling into C libraries.

Most examples of Tcl/Tk usage here use languages that are dynamic. Tcl/Tk is dynamic as well. And of course Go is not. The best concession I could come up with was to use chained function calls that end with Exec() for the dynamic pieces, as can be seen in the gotk_test.go file.

Limitations

At this point, the library is strictly UI-centric. It does not support any of the Tcl commands, though you can send raw commands using this library if you want. The intent is to have Go create a UI, and the events (button clicks, primarily) will call Go functions.

For a quick example, see the gotk_test.go file. This is a work in progress, not ready for prime-time.