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:

• I use Qt IFW 2.0.1
• I'm working on Windows setup only for the moment

Thanks