Requesting information on difference between single develper version and source code.

Q: I am interested in your ActiveGantt chart and would like some more information about it: What is the diference between the 480 dollar version and the 1400 dollar version? How could a developer use the ActiveGantt without the source code? Could we use our existing scheduling data as input to the ActiveGantt chart. (to display the task schedule) (It is a VB6 application that has a task scheduler, and we are looking for a better graphical display of the schedular data, which we store in an Access database)

A: The source code version contains the complete source code for the six controls, you can change any functionality within the control itself and it is useful in spotting and resolving potential bugs. From a cost point of view the upgrade cost is from single developer to site license and source code is USD 920 the difference from the source code version and what you originally paid for the single user license. (USD 1400-480 = 920). A developer can use the control without the source code (single user license) but in that case the control is a black box, code inside the control cannot be modified. And yes you can use your existing data.