What is QTProtector Control?
It’s very common to want a trial version of your application. For example, you need your application to only run for 30 days, or the user can only run your application 200 times.
or Users have to register to run application. You can do this kind of task with this library.
Its easy to use.
drop a qtprotector control in form.and choose one of protection type by ‘ProtectionType’ Property of Control.