cubiest / gotk3-examples

gotk3 examples

The gotk3 project provides Go bindings for GTK+3 and dependent projects.

Examples for gotk3

Sample Use

The following example can be found in gtk-examples/simple/simple.go. Usage of additional features is also demonstrated in the gtk-examples/ directory.

package main

import (
	"github.com/gotk3/gotk3/gtk"
	"log"
)

func main() {
	// Initialize GTK without parsing any command line arguments.
	gtk.Init(nil)

	// Create a new toplevel window, set its title, and connect it to the
	// "destroy" signal to exit the GTK main loop when it is destroyed.
	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
	if err != nil {
		log.Fatal("Unable to create window:", err)
	}
	win.SetTitle("Simple Example")
	win.Connect("destroy", func() {
		gtk.MainQuit()
	})

	// Create a new label widget to show in the window.
	l, err := gtk.LabelNew("Hello, gotk3!")
	if err != nil {
		log.Fatal("Unable to create label:", err)
	}

	// Add the label to the window.
	win.Add(l)

	// Set the default window size.
	win.SetDefaultSize(800, 600)

	// Recursively show all widgets contained in this window.
	win.ShowAll()

	// Begin executing the GTK main loop.  This blocks until
	// gtk.MainQuit() is run. 
	gtk.Main()
}

Installation

gotk3 currently requires GTK 3.16, GLib 2.36-2.40, and Cairo 1.10 or 1.12. A recent Go (1.3 or newer) is also required.

The gtk package requires the cairo, glib, and gdk packages as dependencies, so only one go get is necessary for complete installation.

The build process uses the tagging scheme gtk_MAJOR_MINOR to specify a build targeting any particular GTK version (for example, gtk_3_10). Building with no tags defaults to targeting the latest supported GTK release (3.16).

To install gotk3 targeting the latest GTK version:

$ go get github.com/gotk3/gotk3/gtk

On MacOS (using homebrew) you would likely specify PKG_CONFIG_PATH as such:

$ PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig:`brew --prefix gtk+3`/lib/pkgconfig go get -u -v github.com/gotk3/gotk3/gdk

$ sudo apt-get install libgtk-3-dev
$ sudo apt-get install libcairo2-dev
$ sudo apt-get install libglib2.0-dev

License

Package gotk3 is licensed under the liberal ISC License.