/// <summary>
/// 连接读卡器
/// </summary>
/// <param name="msg">输出信息</param>
/// <returns>是否成功</returns>
public override bool DevOpen(out string msg)
{
msg = "读卡器连接成功！";
bool res = true;
int st = 0;
st = ReaderDllMethod.mwDevOpen("USB", "", out handle); //打开读写器
if (st < 0)
{
msg = ReaderDllMethod.getErrMsg(st);
res = false;
}
else
{
DevBeep(1, 1, 3);
}
return(res);
}