Qt Installer Framework: How to avoid to install twice same software ?

DeeeZ

Hi,

I created successfully a installer with Qt ITW.
Now I would like to prevent to install twice the same software on the same PC.

How to detect the version of a previous installation in the current setup ?

As advanced feature I would like to have this:

Prevent installation a the same software if the current setup version is equal or smaller of the previous setup version used to install the software.
Uninstall previous installation and install the new software, if the setup is greater of the previous setup version.

Thanks

DeeeZ

I forgot these points:

Thanks