How can I make a 'trial version' of a matlab GUI

Question

My aim is to make a GUI, then by using deploytool to make an exe file from it. Since I don\'t want the user to be able to use it for ever I want to make it as a trial versio

Answer 1

Using the computer's clock seems a reasonable way to go. Sure, the user than thwart that by changing the clock, but this will most likely create sufficient inconvenience that they rather pay the reasonable price of the software.

Simply put the following inside the OpeningFcn of your GUI

expiryDate = '2012-12-31';

if now > datenum(expiryDate)
    h = errordlg('please upgrade to a full license');
    uiwait(h)
    return %# or throw an error
end