To check ok button is enable in login window

SystemUtil.Run "C:\Program Files (x86)\HP\QuickTest Professional\samples\flight\app\flight4a"
Dialog("Login").WinEdit("Agent Name:").Set ""
Dialog("Login").WinEdit("Password:").SetSecure ""
Dialog("Login").WinButton("OK").Check CheckPoint("OK")

Test case to check whether the reservation window opened for correct login creditionals

SystemUtil.Run "C:\Program Files (x86)\HP\QuickTest Professional\samples\flight\app\flight4a"
Dialog("Login").Activate
Dialog("Login").WinEdit("Agent Name:").Set "sabeer"
Dialog("Login").WinEdit("Password:").SetSecure "51072cb213a5fb0763b20316fe2cdfe24bff2323"
Dialog("Login").WinEdit("Password:").Type  micReturn
Window("Flight Reservation").Check CheckPoint("Flight Reservation")
Window("Flight Reservation").WinMenu("Menu").Select "File;Exit"

Test case to check login creditinals and their corresponding error message

SystemUtil.Run "C:\Program Files (x86)\HP\QuickTest Professional\samples\flight\app\flight4a"
Dialog("Login").WinEdit("Agent Name:").Set DataTable("name", dtGlobalSheet)
Dialog("Login").WinEdit("Password:").SetSecure DataTable("password", dtGlobalSheet)
Dialog("Login").WinButton("OK").Click
If  Dialog("Login").Dialog("Flight Reservations").Exist Then
Dialog("Login").Dialog("Flight Reservations").Static("Please enter agent name").Output CheckPoint("Error message")
Dialog("Login").Dialog("Flight Reservations").WinButton("OK").Click
Dialog("Login").WinButton("Cancel").Click
Reporter.ReportEvent micFail,"login failed","login failed"
else
Window("Flight Reservation").Check CheckPoint("Flight Reservation")
Window("Flight Reservation").Close
End If