Re: [Mingw-users] Linking with Windows VSSAPI.DLL

[Chris W. <ch...@qw...>]

Hi Greg,

On Tue, 5 Dec 2006, Greg Chicares wrote:

>> but in both cases, cygwin's dlltool tells me:
>>
>>  	dlltool: Syntax error in def file vssapi.def:1
>>
>> I don't have a definitive reference for DEF file syntax that's supported
>> by dlltool, so I'm stuck here :-(. Can anyone help?
>
> Attached is a skeletal '.def' file that actually does nothing,
> but should have valid syntax. I think it was created in the
> days of steam-powered computers by some application generator;
> it's from an ancient project and certainly ought to be valid.
> I send it as an archive in order to make sure you have an
> exact copy--who knows, LF vs. CR/LF might matter.

The command "dlltool -d lmi.def" on that file gives me:

 	dlltool: Syntax error in def file lmi.def:15

I don't think there is anything on line 15!

However, I did manage to generate a DEF file that works with dlltool with 
pexports. Using this, I can link to and call CreateVssBackupComponents in 
MSVC.

Now I'm stuck because MSDN is lying - it says it lists the methods of 
IVssBackupComponents in vtable order, but actually they are not (I peeked 
at the VSS SDK to confirm this). Without knowing the order, I cannot write 
a header to define the interface.

I don't know how to figure out which order they are in without trial and 
error, or resorting to the VSS SDK. I guess that in either case, I would 
not be able to publish a free header for use in MinGW based on such 
information. Can anyone see another way to deduce the order of methods in 
the vtable?

Cheers, Chris.
-- 
_ ___ __     _
  / __/ / ,__(_)_  | Chris Wilson <0000 at qwirx.com> - Cambs UK |
/ (_/ ,\/ _/ /_ \ | Security/C/C++/Java/Perl/SQL/HTML Developer |
\ _/_/_/_//_/___/ | We are GNU-free your mind-and your software |