Please nominate your Qt Champions for 2021!

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

  • 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.


  • I forgot these points:

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


Log in to reply