How to configure Inno Setup to uninstall everything?

Question

I am new to Inno Setup. Stuck on one issue ~ how to configure the uninstall piece to remove all files, folders, subfolders, and even new files/folders etc. created by applic

Answer 1

You can't use InnoSetup to uninstall anything it didn't install, and you shouldn't want to do so. I for one would be very unhappy if I installed an application, entered a lot of data, and then decided to use something else instead that would read that data from your app. If your uninstall killed all of the work I'd already done, I might be tempted to come looking for you. And probably not to buy you a cup of coffee.

Or consider the case where I install your application in the process of evaluating several. I try the apps, and keep going back to yours because I like it a little better, and each time I enter more data. Then I decide not to do anything for a while, so I remove all the test apps. In a week, I decide I need to use your app now after all, and I reinstall it. Oops! All of the work I did testing it that I now wanted to use is gone.

The above is why, when you uninstall an application, it leaves behind anything you created in the folders, like configuration files, data files, etc. It doesn't know what you want it to do with them, so it leaves them alone.