Few Queries

Hi,

I am using Installshield 2016. I am developing an installer which Installscript and MSI. queries as follows
1. I have used sdshowedit3 in install script which accept input as IPAddress, How to validate the input?
2. I have used startcopy2 in installscript, when user click on install I want to disable back button, install button and cancel button, how to achieve this?
3. During uninstallation, A window comes with modify, repair and remove options, I donot want to show this window how to achieve this?

Please guide.

Regards,
TejasD