public static void IMC_SendMessage(int targetUserNo, StreamBuffer data, APICallbackHandler<ResponseBase> callback)
{
SecurePacket reqPacket = new SecurePacket(Protocol.GetID("CS_IMC_SendMessage_Req"));
reqPacket.PutInt32(_userNo);
reqPacket.PutInt32(targetUserNo);
reqPacket.Write(data.Buffer);
_request.SendPacket(reqPacket,
(resPacket) => { callback(new ResponseBase(resPacket)); });
}