Eval versions

[Bill Jaynes]

I'm wondering what methods people have used to make evaluation versions of runtime applications. This will be my first try at this. Is there an easy reliable way of having an app quit after a duration of, say, 30 days?

Any ideas would be welcome.

Thanks,

Bill

[BruceJ]

Since anyone can delete and reinstall it, the metod of string the date time and measuring the days can be outsmarted.

If you have a target company and traget date you coudl write it so that it will check the current date and the quit after an expiration date. This wont' be tricked by reinstalling the files, but coudl be by changing the computers date.

Instead of limiting the length of time, I've found that limiting the number or records has the same impact. If you limit the number of new records to c acoupel of weeks worth (mine are usually patient data and I limit mine to 10 new patients). Sure they can reinstall it, but it won't do much good becasue they'l loose all the old data and can never get very far. Besides, who knows if they decide against it at that moment that soembody might not want to play with it in the future and decide to give you a call. Liited number of records will still be a usefull for true evaluation purposes later on for them.

[Bill Jaynes]

Thanks Bruce,

Very clear and useful response.

We're up here in Montana but my wife is from

Warrensburg so we fly to KC from time to time.

Bill