Ok i might as well give you the code on how i got the info
'true client height of desktop Type lpRECT Field l, t, r, b End Type local taskrect:lpRect = New lpRECT hwnd = FindWindow("Shell_traywnd", "") GetWindowRect( hwnd,taskrect ) local tasksize = taskrect.b - taskrect.t local trueclientheight = GadgetHeight(Desktop()) - tasksize