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PowerBuilder – Timing Out a Windows Session

Posted on Tuesday, June 12th, 2012 at 6:25 pm in

There are a variety of techniques to locking or timing out an application after a certain amount of inactivity. With earlier versions of Windows (XP and prior) a common approach was to invoke the screen saver via a Send command.

send(handle(This),274,61760,0)

This doesn’t work with Windows 7 (or Vista). Try the following:

integer li_rc
OleObject lole_wsh

lole_wsh = CREATE OleObject
li_rc = lole_wsh.ConnectToNewObject ( "WScript.Shell" )
IF li_rc > 0 THEN
   lole_wsh.Run ("rundll32.exe user32.dll,LockWorkStation")
   lole_wsh.DisconnectObject()
END IF

This can be used in Windows XP as well.

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