using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace USB2XXX { class USB2SENT { //函数返回错误值宏定义 public const int SENT_SUCCESS = (0); ///<函数执行成功 public const int SENT_ERR_NOT_SUPPORT = (-1); ///<适配器不支持该函数 public const int SENT_ERR_USB_WRITE_FAIL = (-2); ///