42 lines
668 B
Go
42 lines
668 B
Go
package main
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import (
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"log"
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"github.com/BurntSushi/xgb"
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)
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func init() {
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log.SetFlags(0)
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}
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func get32(buf []byte) uint32 {
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v := uint32(buf[0])
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v |= uint32(buf[1]) << 8
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v |= uint32(buf[2]) << 16
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v |= uint32(buf[3]) << 24
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return v
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}
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func main() {
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X, err := xgb.NewConn()
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if err != nil {
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log.Fatal(err)
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}
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root := X.DefaultScreen().Root
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aname := "_NET_ACTIVE_WINDOW"
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atom, err := X.InternAtom(true, uint16(len(aname)), aname).Reply()
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if err != nil {
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log.Fatal(err)
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}
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reply, err := X.GetProperty(false, root, atom.Atom,
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xgb.GetPropertyTypeAny, 0, (1<<32)-1).Reply()
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if err != nil {
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log.Fatal(err)
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}
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log.Printf("%X", get32(reply.Value))
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}
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