in form keypress

LPARAMETERS nKeyCode, nShiftAltCtrl
if nkeycode=-8   or nkeycode=-9 
messagebox(trans(nkeycode))
endi

f9 pressed alone...-8
f10 pressed alone.....-9
see inkey() function in help.

Note:please, why do you not answer to my previous posts ?
have you some personal reasons ?