Web Update Install - Previous Version Detect

[NewsArchive]

> Using example script code in one of the detect previous version projects, I
> can get the proper previous version to display, but I can't seem to create
> the right variable that actually reads that previous version number and
> then applies the Exit installation control statement to it.

David,

When you use "Detect Previous Version" it will automatically populate two
SetupBuilder variables for you.

%_SB_RETURNEX% will be a string that contains the version number.

%_SB_TMP% will be a full path to the uninstaller.

In the attached screen shot you can see how we used this in the new release
of ProImage to detect that a 1.x version of the product was installed.

We offer a dialog to the user offering to uninstall it for them, and then
if they confirm that action we use the "Run Command Line" option to launch
the uninstaller.

You should be able to examine the %_SB_RETURNEX% after your call to "Detect
Previous Version" and then evaluate what actions you need to take.

Does that help?

Charles



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Charles Edmonds
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