WINCC 中VBS脚本能运行记事本，但是不能打开test.txt文件，为什么？？请高手帮忙！！！
Dim WshShell
Set WshShell=CreateObject("Ws cript.Shell")
WshShell.Run "notepad"
Ws cript.Sleep 2000
WshShell.AppActivate "无标题- 记事本"
Ws cript.Sleep 1000
WshShell.SendKeys "^O" // ctrl+O 打开文件对话框
Ws cript.Sleep 1000
WshShell.SendKeys "test.txt" //输入文件名
Ws cript.Sleep 1000
WshShell.SendKeys "{Enter}"