[Lazarus] Having more than 32 elements in a set (TGridOptions of TCustomGrid)

[Bart]

On 11/5/14, Werner Pamler <werner.pamler at freenet.de> wrote:

> Recompiling the package LCLBase fails with the error: "Property can't
> have a default value". I think this message is misleading and confusing
> because the true issue seems to me that the set of TGridOptions now
> contains 33 elements. In my understanding, the elements of a set
> correspond to the bits of an integer. In a 32-bit OS, therefore, a set
> can only contain 32 elements - there is one too many now...
>
> Is this interpretation correct?

I think it's not.

Default values must be of ordinal, pointer or small set type (Delphi)
(See: http://docwiki.embarcadero.com/RADStudio/XE7/en/E2146_Default_values_must_be_of_ordinal,_pointer_or_small_set_type_%28Delphi%29)

After you added the 33-rd option now SizeOf(TGridOptions) = 32 bytes.
Every option is stored as a bit, so you can have 256 (=32*8) options (I think).

Bart