I need to ask the user for a password during install, which is then used as part of a command which runs after installation. I\'m using a custom page to do this and it works
I'm using InnoSetup 5.4.2 and in the docs are several Uninstall Event Functions including:
procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep);
You should be able to create an input page within the [code] section.