Question

I’ve been looking into draw and draw.x11 packages that come with Go. I didn’t find out a simple way to draw a line on a X11 window.

Where I can find some simple 2D drawing examples?

Answer 1

I found myself the answer, here it goes a simple example:

package main

import (
    "os"
    "time"
    "image"
    "exp/draw/x11"
)

func main() {
    win, _ := x11.NewWindow()
    color := image.RGBAColor{255, 255, 255, 255}

    img := win.Screen()
    for i, j := 0, 0; i < 100 && j < 100; i, j = i + 1, j + 1 {
        img.Set(i, j, color)
    }

    win.FlushImage()
    time.Sleep(10 * 1000 * 1000 * 1000)
    win.Close()
    os.Exit(0)
}