public string readKeyInPass()
{
if (iDevice <= 0)
{
return("");
}
int state = -1;
StringBuilder temp = new StringBuilder();
initPassState(120);
do
{
//state:0 完成输入
//161：输入密码长度过长，最长密码为25个数字
//162：，取消密码输入
//163：未处于密码输入状态
//164：，用户输入密码还未完成
//165：，用户密码输入操作超时
Byte[] tempPass = new Byte[6];//6位密码
Byte lenpass = 0;
state = E7Lib.fw_PassGet(iDevice, ref lenpass, ref tempPass[0]);
int statePassKey = E7Lib.fw_CheckKeyValue(iDevice, ref lenpass, ref tempPass[0]);
//cancelPassState();
if (lenpass > 6)
{
//等待用户按确认
continue;
}
if (statePassKey == 0 && state != 0 && lenpass > 0 && lenpass != temp.Length)
{
#if DEBUG
temp.Append(((char)tempPass[lenpass - 1]).ToString());
#else
temp.Append("*");
#endif
showStringLCD2Lines("请输入密码！", GetDisplayPsw(temp.ToString()));
}
if (state == 0 || state == 162)
{
//输入完成或者取消，跳出循环
break;
}
} while (state != 161 &&
state != 162 &&
state != 165 &&
state != 0);
if (0 == state)
{
showStringLCD2Lines("输入完成!", "");
return(temp.ToString());
}
return("");
}