Test Window

test-window.go

package main

import (
	"fmt"
	"github.com/BurntSushi/xgb"
	"github.com/BurntSushi/xgb/xproto"
)

func main() {
	X, err := xgb.NewConn()
	if err != nil {
		panic(fmt.Sprintf("Unable to connect X server: %s\n", err))
	}

	wid, _ := xproto.NewWindowId(X)

	setupInfo := xproto.Setup(X)
	screen := setupInfo.DefaultScreen(X)

	fmt.Println("Root window:", screen.Root)
	err = xproto.CreateWindowChecked(X,
		screen.RootDepth,
		wid, screen.Root, 0, 0, 150, 150, 0,
		xproto.WindowClassInputOnly, screen.RootVisual,
		//xproto.WindowClassInputOutput, screen.RootVisual,
		0,
		//xproto.CwBackPixel|xproto.CwEventMask,
		[]uint32{
			0xffffffff,
			xproto.EventMaskStructureNotify |
				xproto.EventMaskKeyPress |
				xproto.EventMaskKeyRelease}).Check()
	if err != nil {
		panic(fmt.Sprintln("Create Windoe Failed:", err))
	}

	xproto.MapWindow(X, wid)

	X.Sync()

	for {
	}
}

For window class InputOnly, the depth must be zero according to the x11protocol.txt