Trial Based Applicatiion

SirWobbyTheFirst · Post by **SirWobbyTheFirst** » Wed Jul 08, 2009 12:59 pm

I have been tinkering with the Convert command and have found an answer to those people who are looking to make a 30 (Or more) day based trial of their software.

You should use this upon when your applications setup is run and store the value in a custom property or in the registry (If deploying to Windows only.)

Code: Select all

On PreOpenCard
  Local tExpiryDate
  Convert The System Date To DateItems
  -- Substitute 30 for the amount of days you want.
  Add 30 To Item 3 Of It
  Convert It To System Date
  Put It Into tExpiryDate
  -- Save tExpiryDate to the place you want.
  Set The ExpiryDate Of Stack "ActivationDetails" To tExpiryDate
End PreOpenCard

Then when your application fires up you can reference this.

Code: Select all

On PreOpenCard
  Local tExpiryDate
  -- Place the value that you stored earlier into tExpiryDate
  Put The ExpiryDate Of Stack "ActivationDetails" Into tExpiryDate
  If The System Date Is tExpiryDate Then
    Answer Error "The 30 day trial has finished please activate the software to continue."
    Quit
  End If
End PreOpenCard

Hope this helps the people who need it. If I have any more updates I'll post them here.

Klaus · Post by **Klaus** » Wed Jul 08, 2009 1:17 pm

Yep, but I would rather use "preopenstack" than "preopencard"

SirWobbyTheFirst · Post by **SirWobbyTheFirst** » Wed Jul 08, 2009 2:14 pm

NEVER!!!

Klaus · Post by **Klaus** » Wed Jul 08, 2009 3:22 pm

OK, if you like to create "annoy-ware"

mwieder · Post by **mwieder** » Wed Jul 08, 2009 4:13 pm

A: On day 31 the app will continue to function properly.
B: It's very easy to change the system date on the computer to fool this.

shadowslash · Post by **shadowslash** » Sat Jul 11, 2009 5:13 am

mwieder wrote:A: On day 31 the app will continue to function properly.
B: It's very easy to change the system date on the computer to fool this.

Yup that is true, if I'm to be the one to create a trial software, the approach I'm gonna do is the same as that only I'm gonna use the registry bit to "mislead" the possible bypasser. They can try to change the registry or time how they want but the settings will be stored to a file that of course wouldn't be easy to find or distinguish...