Return Parameters

Return Code Explanation
0 The keystrokes were sent; status is normal.
1 Your program is not connected to a host session.
2 An incorrect parameter was passed to EHLLAPI.
4 The host session was busy; all of the keystrokes could not be sent.
5 Input to the target session was inhibited or rejected; all of the keystrokes could not be sent.
9 A system error was encountered.