Which is the correct Registry Path to Get Adobe Acrobat Version?

Question

Hi All
Originally, this post was put  on [Acrobat Windows] forum, i am reposting it here, since i didnt get any answer.
I am currently using Adobe Acrobat 9.1.3 Pro in my Win XP - SP3 machine.
I would like to know how can i get the 'CORRECT' version of the installed Adobe Acrobat from the registry.
Under windows Registry, i could find two places
- HKEY_CLASSES_ROOT\AcroExch.App\AcrobatVersion.
- HKEY_CLASSES_ROOT\AcroExch.Document\AcrobatVersion.
Among these two, the first keys value shows as 8.0 and the latter shows as 9.0. I guess the first one is the correct place to look but it shows as 8.0.
by the way, i have installed it on a fresh clean machine. So is it a bug from Adobe Acrobat ? or is it correct for Adobe Acrobat ( may be in some way).
In that case can i  use 'AcroExch.Document' but will it be retained in the future versions also.
thanks in advance
regards
~jafeel

Answer 1

Hi Patrick,
We are using it to query the version of the installed Adobe Acrobat in the machine in which our application is installed. If it doesnt matches our criteria, we ask the user to have the correct version to be installed.
We queried the OLE interface for the Acrobat Version because at a time you are suppose to have one installation of the Adobe Acrobat. And morevoer the OLE reg path is giving the 'Acrobat Version'. For AA8.X both the OLE registry keys were having the same version number i.e 8.0.
Yes, i guessed that the reason for multiple versions under the [HKLM\SOFTWARE\Adobe\Adobe Acrobat\X.0\Installer] may be for some backward compatibility. Anycase, i have already gone with the HKLM...\X.0\Installer path way.
But why is that the OLE interfaces in the registry shows two different 'Acrobat Version' for the AA9.??
thanks and regards
~jafeel