When an install completes successfully, the date and time and some other info needs to be written to the registry. How can a date be generated and how do you know if an install was completed successfully? (writing to the registry with wix is not a problem).
What about using standard MSI properties Date and Time?
Note: Be warned that despite the documentation indicating the date will always be in the MM/DD/YYYY format, this is not in fact the case. A verbose MSI log on my system (in Australia) shows the property in DD/MM/YYYY format... e.g.:
Property(S): Date = 21/04/2010