QT installer framework disable "Modify" button in windows Apps & Features

From my testing with Windows Installer I found that to enable the 'Modify' button in Windows Apps and Features the 'ModifyPath' expandable string needs to be populated in the applications uninstall key in the registry.

ModifyPath | Determined and set by the Windows Installer.

Uninstall Registry Key - MSDN

When using Windows Installer properties to prevent the 'remove' and 'repair' options from Add Remove Programs, the expandable string ModifyPath is not created and thus the modify option from Apps and Features is not available.

A typical value for the ModifyPath expandable string would be:

MsiExec.exe /I{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}

Where {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} is the product code. However I have also seen in my testing that if the expandable string exists and has a value the modify option is available in Apps and Features

To disable "Modify" option in your application from Windows Apps & Features, uninstaller menu, you can do one of this:

1. Add a new <SupportsModify>false</SupportsModify> value in config.xml file:

<?xml version="1.0"?>
<Installer>
    <Name>Some Application</Name>
    <Version>1.0.0</Version>
    <Title>Some Application Setup</Title>
    <Publisher>Your Company</Publisher>
    ...
    <SupportsModify>false</SupportsModify>
    ...
</Installer>

2. Or set value "SupportsModify" to false by calling installer.setValue(...args) method:

function Controller()
{
  if (installer.isInstaller())
  {
    // Disable button "Modify" on windows Apps & feature uninstalls entry
    installer.setValue("SupportsModify", false);
  }
}