>>>I was looking for something in the object browser and notice following:

>>>Constant wdAlertsAll = -1
>>>Hex: -0x00000001, Bin: 11111111
>>>Member of Word (cached).WdAlertLevel

The part that get me curious is

Hex: -0x00000001

I never encountered negative hex numbers before. Shouldn't it be?

Hex: 0xff

>>
>>If it's a DWORD, then it should be 0xFFFFFFFF. The binary representation you show is only a byte. Generally, bytes are unsigned, words and dwords can be signed or unsigned. Why the representation the way it is, I can only guess.
>
>I just tried

? -0x00000001

and VFP shows it as -1. At least it works in VFP.

It's valid, Sergey. AFAIK, VFP treats all hexadecimal representations of DWORDS as unsigned. Certain operations, however, treats them as signed. Try the following from the command window

lnvar = 0xFFFFFFFF
? lnvar
lnvar = BITOR(lnvar, 0)
? lnvar

To see what I mean.