Qt Installer, overwrite previous version

Question

I am using the latest Qt Installer version 2.0.3 I have created an installer for my app, but when I try to install it I get the following error message: "The folder you selected already exists and contains an installation. Chose different target for installation"

How can I indicate Qt Installer to overwrite the old version? is this officially supported?

score 5 · Answer 1 · edited May 02 '23 at 17:56

5

Use the MaintenanceTool. It's in the root folder of the Qt installation, which on Linux is

bash -c "$HOME/Qt/MaintenanceTool"

edited May 02 '23 at 17:56

rokejulianlockhart

91
2
16

answered Oct 31 '16 at 22:06

drarko

51
1
4

5

Please elaborate. – Joe C Oct 31 '16 at 22:14
thank you. Why they don't put this in the start menu is beyond me – Gaspa79 Jul 24 '19 at 14:10

score 1 · Answer 2 · answered Feb 27 '21 at 22:26

You should use this code below. You will always have the same id for your application and you will be able to overwrite your application.

function Controller()
{
    installer.setValue("ProductUUID", "YourApplicationName");

    var previous = installer.value("HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\YourApplicationName\\InstallLocation");
    if(previous !== "")
    {
        installer.setValue("TargetDir", previous);
        installer.setDefaultPageVisible(QInstaller.TargetDirectory, false);
    }
}

score 0 · Answer 3 · answered Oct 06 '17 at 21:35

0

No, it is not officially supported for some reason. To get it to work, you have to do some hacking. I have listed the steps that work for me in the answer for my question.

answered Oct 06 '17 at 21:35

rationalcoder

1,587
1
15
29

Qt Installer, overwrite previous version

3 Answers3