Hi I have a small program which closes Windows explorer,but i keep getting the error

"Too many arguments", when the function is called.

here is the code

wm_destroy has been defined before hand

lnExplorerHand=THISFORM.findwindowinscreen("Exploring")
IF lnExplorerHand !=0
SendMessage(lnExplorerHand ,WM_DESTROY,0,0)
ENDIF

Any ideas would be a great help

Regards Steven Bowskill