Setting my Application to Expire After Thirty Days

[Desmond]

Setting my Application to Expire After Thirty Days

Document ID: IR10061

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The information in this article applies to:

• AutoPlay Media Studio 5.0 Standard Edition
• AutoPlay Media Studio 5.0 Professional Edition

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SUMMARY

This article describes how to set your application to expire after thirty days.

DISCUSSION

To make your application expire after thirty days, store the date the program was first run in the registry, and every consecutive time that the program is run, compare the registry to the expiry date (30 days after your program was first installed).

To accomplish this, insert the following code into the On Startup event of your project:

days_left = 30;

date_installed = Application.LoadValue("My Application", "Date Installed");

date_installed = String.ToNumber(date_installed);

time_limit = 30; --the length of the trial period, in days

if date_installed == 0 then

   Application.SaveValue("My Application", "Date Installed", System.GetDate(DATE_FMT_JULIAN));

else

   days_left = (date_installed + time_limit) - System.GetDate(DATE_FMT_JULIAN);

end



if days_left < 1 then

   Dialog.Message("Trial Period Over", "This software has expired");

   Application.Exit();

else

   Dialog.Message("Trial Period", "You have "..days_left.." days left in your trial period.");

end

MORE INFORMATION

For more information please see the following topics in the AutoPlay Media Studio 5.0 help file:

• Program Reference | Actions | Application | Application.LoadValue
• Program Reference | Actions | Application | Application.SaveValue
• Program Reference | Actions | System | System.GetDate

KEYWORDS: AutoPlay Media Studio 5.0, Expire, Trial, Version

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Last reviewed: October 1, 2003
Copyright © 2003 Indigo Rose Corporation. All rights reserved.