I use the following API declarations
*** Set UP API Calls
Declare Integer FindWindow IN Win32Api AS FindApp String, String
Declare BringWindowToTop IN Win32APi AS MakeTop Integer
Declare ShowWindow IN Win32Api AS ShowWin Integer, Integer

Then, since you have found the window/handle ;
*** So make it uppermost and maximize it (ShowWin => 3)
MakeTop( lnHWND )
ShowWin( lnHWND, 3 )
Thanks to Andy Krameck for his OnceOnly.prg

Al