shell32: SHELL32_GetItemAttributes()

[Martin Fuchs]

Hello Michael,

> Those are default flags, for the case that HCR_GetFolderAttributes didn't find
> a registry entry. Are you sure those aren't necessary? Perhaps we should push
> them into HCR_GetFolderAttributes, though.

Yes, I am quite sure the change is correct. It doesn't just remove the
following code:

- if (!HCR_GetFolderAttributes (pidl, pdwAttributes)) {
-     *pdwAttributes &= SFGAO_HASSUBFOLDER|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR|
- SFGAO_DROPTARGET|SFGAO_HASPROPSHEET|SFGAO_CANRENAME|SFGAO_CANLINK;


If you look into shlfolder.c you will see the same code is still
available in the final 'else' clause at line 459:

    } else {
*pdwAttributes &=
SFGAO_HASSUBFOLDER|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR|SFGAO_DROPTARGET|SFGAO_HASPROPSHEET|SFGAO_CANRENAME|SFGAO_CANLINK;
    }


The sense of the change is to join the if clause of the
HCR_GetFolderAttributes() call:

 [...]
else if (_ILGetGUIDPointer() && HCR_GetFolderAttributes())
  [return new attributes]
else
 [search for other return attributes using _ILGetDataPointer()]
else
 [return nothing]


The old code version used the following wrong logic:

 [...]
else if (_ILGetGUIDPointer()) {
  if (!HCR_GetFolderAttributes())
   [return nothing]
} else
 [search for other return attributes using _ILGetDataPointer()]
else
 [return nothing]


Regards,

   Martin