package main

import "fmt"
import "errors"
import "code.google.com/p/x-go-binding/xgb"

func main() {
    // open the connection to the default X server
    display, err := xgb.Dial("")
    if err != nil {
        panic(errors.New("unable to open X server"))
    }

    // get the root window
    screen := display.DefaultScreen()
    root := screen.Root

    // intern the "WM_NAME" atom
    atomTitle, err := display.InternAtom(false, "WM_NAME")
    if err != nil {
        panic(errors.New("unable to intern WM_NAME"))
    }

    // get the list of windows
    tree, err := display.QueryTree(root)
    if err != nil {
        panic(errors.New("unable to get the tree of windows"))
    }

    // display the title and ID of each window
    for _, child := range tree.Children {
        title, err := display.GetProperty(false, child, atomTitle.Atom, xgb.GetPropertyTypeAny, 0, 1024)
        if err != nil {
            panic(errors.New("unable to get window title"))
        }
        fmt.Println("found window", child, string(title.Value))
    }
}