Re: Visual C++ 6.0, Vista, Drag'n'Drop and elevation...
Michael Gledhill wrote:
You have to write an article for KB (Knowledge Base), Mike! :)
MrAsm
Tempting... very tempting... ;-)
But first of all, I'm hoping that someone from Microsoft will read this
thread, and explain WHY this ridiculous behaviour exists...
(You really have no idea how long it took me to narrow down the
cause of this problem.. I had my project stripped down to just one
.cpp and one .h file, it did absolutely nothing, had no dialogs or
resources, but STILL required elevation... It just didn't make
sense...!!!)
Mike:
I think the reason for this is so that legacy installation programs will
request elevation. I would hope that including a "Vista manifest" would
defeat this behavior.
A lot of things like this have been discussed on the Inno setup
newsgroup. In fact a problem like this came up for the Inno Setup
Compiler itself when run on Vista (because it has "installer" in its name).
Another example of weirdness: if you take a legacy uninstaller, and
reply "No" to the "Are you sure you want to completely remove ..."
question, a message pops up that the application "might not have
uninstalled correctly". Very confusing to the user, because if the
application might not have uninstalled correctly then presumably it
might also have uninstalled successfully, which of course it did not.
The reason for this behavior is that Vista takes a change in the list of
installed programs as the criterion of success of an uninstall (or
install). This behavior can be eliminated by adding a Vista manifest to
the uninstaller, as was done in Inno setup.
--
David Wilkinson
Visual C++ MVP