1. if i am a license buyer,can we get the both x86 and x64 current version?
Yes, of course.
2.can u get me some examples at lease two which use winpkfilter for himself software?
Not sure what you exctly mean here, but there are a couple of advanced sampes – Internet Gateway and Ethernet Bridge which are available to licensed users.
a fool question Rolling Eyes ,it is: if i but the winpkfilter for a license,when i send my software which used the winpkfilter, ~~~~~~this’s to say: the winpktilter driver i paid will be published. how to prevent it?
Standard build of WinpkFilter driver is freely available for private and non-commercial use, I don’t think that anyone would steal your custom build.