录制该实例时，出现过很多问题，里面有个很奇怪问题“Cannot find the "Agent name must be at least 4 characters long." object's parent "Login" (class Dialog).Verify that parent properties match an object currently displayed in your application.”，一直认为是不识别对象，又是改语句的，又是增加虚拟对象，都没一个成功，最后才查出是代码问题，少判断了"Flight Reservations"是否存在情况？导致跑到正确登录时候出问题。
最终代码如下：
'应用QTP自带订票系统
'应用六个不同登录情况测试用例
'检验弹出提出信息是否正确
Dim i
Dim istatus'预期值变量
Dim outvalue '实际值变量
For i=1 to datatable.GetSheet("Action1").getrowcount '循环从1到Action1最后一行
Dialog("Login").WinEdit("Agent Name:").Set DataTable("username", dtLocalSheet)
Dialog("Login").WinEdit("Password:").SetSecure DataTable("password", dtLocalSheet)
Dialog("Login").WinButton("OK").Click
If Dialog("Login").Dialog("Flight Reservations").Exist Then
'插入输出检查点,参数化outmsg
Dialog("Login").Dialog("Flight Reservations").Static("Agent name must be at least 4 characters long.").Output CheckPoint("Agent name must be at least 4 characters long.")
istatus=datatable("status",dtlocalSheet) '将预期值status赋予变量istatus
outvalue=datatable("outmsg",dtlocalSheet) '将实际值outmsg赋予变量outvalue
If istatus <> outvalue Then
reporter.ReportEvent 1,"登录功能测试","预期值为"+istatus+"，实际值为"+outvalue
else
reporter.ReportEvent 0,"登录功能测试","登录成功！"
End If
Dialog("Login").Dialog("Flight Reservations").WinButton("确定").Click
else
Window("Flight Reservation").Close
End If
datatable.getsheet("Action1").setnextrow '获取Action1下一行数据
Next
