www.digitalmars.com         C & C++   DMDScript  

c++.mfc - Trial period

reply "Phill" <phill pacific.net.au> writes:
I am making a program on a contract, this
is my first paid work.
I will only be paid when the client is satisfied
with my work.
Im a bit concerned that since our only contact is
via the Internet that when I send them the
software to evaluate, they will just take it and not pay.
So can anyone tell me what is the standard
or preffered way to make a trial version
of software that will not function past the
expiry date of the trial period?

Thanks for any help!

Phill.
Nov 14 2003
parent reply Jan Knepper <jan smartsoft.us> writes:
Hi Phill,

I do not think there is any standards with regards to a TRIAL version.
There are several things you can do depending on what your program is 
supposed to do.
If it is document oriented, remove the 'Save' from the program so people 
can see it works, but not actually use it until they pay.
If it is database oriented, put a limit on the number of records the 
program can deal with.
If it is, etc, etc, etc.

Hope this help.



Phill wrote:


 I am making a program on a contract, this
 is my first paid work.
 I will only be paid when the client is satisfied
 with my work.
 Im a bit concerned that since our only contact is
 via the Internet that when I send them the
 software to evaluate, they will just take it and not pay.
 So can anyone tell me what is the standard
 or preffered way to make a trial version
 of software that will not function past the
 expiry date of the trial period?
 
 Thanks for any help!
 
 Phill.
 
 
 


-- 
ManiaC++
Jan Knepper
Nov 14 2003
parent reply "Phill" <phill pacific.net.au> writes:
Do you mean and then send them
another version once they have paid?

I mean after I have sent them the trial
version, once they have paid I can
send them a serial number or somthing
which they enter and the full version functions.
What could be the proceedure once the
serial number is entered?
Should my program write it to a property file,
or the registry, so that the program can read it at a later date to test
whether it should start as a trial or full version?

I hope I am clear.
Thanks for your help!


"Jan Knepper" <jan smartsoft.us> wrote in message
news:bp3ur4$mo2$1 digitaldaemon.com...

 Hi Phill,

 I do not think there is any standards with regards to a TRIAL version.
 There are several things you can do depending on what your program is
 supposed to do.
 If it is document oriented, remove the 'Save' from the program so people
 can see it works, but not actually use it until they pay.
 If it is database oriented, put a limit on the number of records the
 program can deal with.
 If it is, etc, etc, etc.

 Hope this help.



 Phill wrote:


 I am making a program on a contract, this
 is my first paid work.
 I will only be paid when the client is satisfied
 with my work.
 Im a bit concerned that since our only contact is
 via the Internet that when I send them the
 software to evaluate, they will just take it and not pay.
 So can anyone tell me what is the standard
 or preffered way to make a trial version
 of software that will not function past the
 expiry date of the trial period?

 Thanks for any help!

 Phill.


 --
 ManiaC++
 Jan Knepper
Nov 14 2003
parent reply keshu82_sh hotmail.com writes:
How can i create a 30 days trial version in Visual C++(MFC) or like a winzip
trial version please any one help me to solve out this problem.


thanks in advance
keshav

In article <bp3vmq$ocg$1 digitaldaemon.com>, Phill says...

Do you mean and then send them
another version once they have paid?

I mean after I have sent them the trial
version, once they have paid I can
send them a serial number or somthing
which they enter and the full version functions.
What could be the proceedure once the
serial number is entered?
Should my program write it to a property file,
or the registry, so that the program can read it at a later date to test
whether it should start as a trial or full version?

I hope I am clear.
Thanks for your help!


"Jan Knepper" <jan smartsoft.us> wrote in message
news:bp3ur4$mo2$1 digitaldaemon.com...

 Hi Phill,

 I do not think there is any standards with regards to a TRIAL version.
 There are several things you can do depending on what your program is
 supposed to do.
 If it is document oriented, remove the 'Save' from the program so people
 can see it works, but not actually use it until they pay.
 If it is database oriented, put a limit on the number of records the
 program can deal with.
 If it is, etc, etc, etc.

 Hope this help.



 Phill wrote:


 I am making a program on a contract, this
 is my first paid work.
 I will only be paid when the client is satisfied
 with my work.
 Im a bit concerned that since our only contact is
 via the Internet that when I send them the
 software to evaluate, they will just take it and not pay.
 So can anyone tell me what is the standard
 or preffered way to make a trial version
 of software that will not function past the
 expiry date of the trial period?

 Thanks for any help!

 Phill.


 --
 ManiaC++
 Jan Knepper
Sep 25 2005
parent "Kar G Lim" <kar.lim macquariehealth.com.au> writes:
During installation, or when the program run for the first time, use say the
date, time, volume number, maching tag, hard disk space etc to generate a
number and stored it in the registry. This becomes the "activation code".
When customer pays, they neet to submit the number to you. You use the
number as input to you secret algorithm to generate an unlock key. The rest
is up to your imigination.

Naturally no software copy protection scheme is secure... That's why
hardware dongles are made...

I use the Silabs' USB 8051 microcontroller to store a piece of code in our
hardware. You can find those micros at www.silabs.com



<keshu82_sh hotmail.com> wrote in message
news:dh85kj$iti$1 digitaldaemon.com...

 How can i create a 30 days trial version in Visual C++(MFC) or like a


winzip

 trial version please any one help me to solve out this problem.


 thanks in advance
 keshav
Sep 29 2005