[Qt-interest] Registry Virtualization in Windows Vista and QSettings

[Anthony Serdyukov]

All my experiments and all the tips have lead me to the following solution.

The ability of writing to system scope should be detected via
QSettings::isWritable(). Correctness of this check in Windows Vista
and higher should be ensured by embedding manifest with
requestedExecutionLevel=asInvoker as Marco suggested. The check is
correct in Linux too.
Depending on the result of the mentioned check some controls in the
"Settings Dialog" are to be disabled/readonly/hidden/etc.

And that works. Hope, this will help somebody.