>Hi Herman,
>
>Thank a lot for your advise and help. I will look into it.
>BTW, have you tried to use it with VFP, if so, can you
>sent me a copy of your code for reference.
>

Hi Virusim,
The dll that comes with the package is not design to work with VFP. So you have to change a little, and I haven't look around with the source yet. I just made some example (not in VFP), try to find out how it is working.
Based on your request I converted one of my example to VFP, it doesn't work as I thought. No crash/error, simply doesn't work. I send it to you anyway just for your reference. You can try it on VB sample

Good luck.