Board index » delphi » Upgrading 7 to 7.1 will most likely get me fired...

2004-09-25 04:37:58 AM
delphi247
Most of our development here is against a 3rd party COM object, that in
Delphi 7.,0 worked beautifully. However, after suggestions from various
other developers, we upgraded to Delphi 7.1 and now all access to the 3rd
party com object is dead. As a doornail. No programs that access that COM
object work at all now. Every one of my projects is dead, and I am in
serious jeopardy of losing my job.
How can I revert back to the old Delphi 7.0? There's no way to un-install
just the update...
 

JSheble writes:
from original media. The inability to remove a patch was a limitation
of the MSI 2.0 install engine.
 

Is there any way to determine what could be going wrong? it is certainly
something to do with how the TypeLib is created or how the app actually
accesses the the COM Object. These problems only occurred after upgrading
to 7.1, and re-importing the TypeLib. I uninstalled the 7.1, re-installed
the 7.0 but did not re-import the TypeLib, I used the *_TLB.pas file that
was created with the 7.1 update, and all access to the COM object still
failed. I re-imported in 7.0 and it started working again.
The COM Object in question was created in VB, and it is not a very good COM
object, but unfortunately I have no real choice in the matter, I have to use
it.
"Leo Saguisag (Borland)" <lsaguisag_at_borland_dot_com>writes

mE writes:
did, run a filecomp and see if there are any differences. You may have
found a bug in the type library importer.
 

There are a whole slew of differences... lots & lots & lots & lots...
But most of them appear to be the order in which it lists the properties and
methods. Without spending too much time on it, it doesn't appear that the
declarations themselves are different, they just appear to be in different
places in the TLB file. Same COM Object, but the importer is reading it in
different order?
There could be other changes, but I really don't have the time to study this
as in depth as I would like.
"Leo Saguisag (Borland)" <lsaguisag_at_borland_dot_com>writes

JSheble writes:
would be significant but then again I am hardly a COM guru...
Have you tried asking around the COM newsgroups? Maybe some of the
people who hang out there would have a better understanding of what
could be happening...
--
Leo Saguisag
Delphi l10n engineer
 

I've posted a message there today... guess I will wait and see... If it is an
issue in Delphi, I hope it is corrected before Diamondback is released...
"Leo Saguisag (Borland)" <lsaguisag_at_borland_dot_com>writes