>>>I'm trying to create an updatable view. My base table has a compound primary key such as Field1 + Field2 + str(Field3,8,0) + Field4.
>>>I can't quite figure out the syntax for the dbsetprop() command to set the key field.
>>
>>You don't have a single key field, but several. Therefore, judging from the documention, you should do
>>
>>dbsetprop(Field1, "Field", "KeyField", .T.)
>>dbsetprop(Field2, "Field", "KeyField", .T.)
>>dbsetprop(Field3, "Field", "KeyField", .T.)
>
>I don't think specifying more that one key is allowed. The expression specified should be specified as the key expression in the tables definition (I believe).

Yes, multiple KeyFields are allowed. If you create a view in the view designer and select multiple update keys, then run gendbc.prg you'll see that it uses the same exact approach that Mr. Wilden has suggested.