diff --git a/def.go b/def.go
index 23b0d1f..1db0463 100644
--- a/def.go
+++ b/def.go
@@ -17,6 +17,8 @@ type TGCommand struct {
 	Document     tb.Document   `json:"document"`
 	ParseMode    int64         `json:"parse_mode"`
 	Delay        time.Duration `json:"delay"`
+	CallbackName string        `json:"callback_name"`
+	CallbackData []byte        `json:"callback_data"`
 }
 
 type ChatWarsCallback struct {
@@ -50,6 +52,7 @@ const (
 	commandDeleteMsg    = 4
 	commandRefreshMsg   = 5
 	commandSendDocument = 6
+	commandCallback     = 7
 
 	cmdParseModePlain    = 1
 	cmdParseModeMarkDown = 2
diff --git a/td.go b/td.go
index 2359159..4d1d281 100644
--- a/td.go
+++ b/td.go
@@ -295,8 +295,16 @@ func clientMsg(c *tdlib.Client, m TGCommand) {
 
 			MQCWMsgQueue <- r
 		}
+	case commandCallback:
+		p := CallbackQueryPayloadData{
+			Data: m.CallbackData,
+		}
+		a, err := c.GetCallbackQueryAnswer(m.FromChatID64, m.FromMsgID64, p)
+		logOnError(err, "clientMsg : GetCallbackQueryAnswer")
+		b, _ := json.Marshal(a)
+		log.Printf("GetCallbackQueryAnswer :\n%s\n", string(b))
 	default:
-		log.Printf("ListenMQ : No handler for command %d.\n", m.Type)
+		log.Printf("clientMsg : No handler for command %d.\n", m.Type)
 	}
 
 }