Strange behaviour of numlock() and capslock()

[JackTheC]

In VFP6 sp5
=================
When Caps and Num are in fact ON, every messagebox should appear. But only 1 and 4 do.
When Caps or Num is ON, messagebox 4 and 5 should show up, but only 4 does.

Is this normal or is this an error in VFP?

if numlock()
	if capslock()
		=messagebox('1. Caps and Num are ON')
	endif
endif

if numlock() and capslock()
	=messagebox('2. Caps and Num are ON')
endif

if numlock()=.t. and capslock()=.t.
	=messagebox('3. Caps and Num are ON')
endif

if numlock() or capslock()
	=messagebox('4. Caps or Num is ON')
endif

if numlock()=.t. or capslock()=.t.
	=messagebox('5. Caps or Num is ON')
endif

 

[JackTheC]

Just found out that this seems to be an known error in VFP 2-7.
My first solution is the recommended one.

http://support.microsoft.com/kb/113174