breaking: Change Win32 to use pointers instead of ints

[notgull]

Needed as per new Win32 metadata updates

Fixes: #171
Supersedes: #154

[kchibisov]

can we just store both?

[kchibisov]

Or maybe provide method to get a ptr or maybe store as ptr and get a method to get as usize. We were storing them as ptr before, then they were made into integer per migration to windows-rs stuff, and now we move them back to ptr, so at this point maybe just having both should be fine?

[madsmtm]

Or maybe provide method to get a ptr or maybe store as ptr and get a method to get as usize. We were storing them as ptr before, then they were made into integer per migration to windows-rs stuff, and now we move them back to ptr, so at this point maybe just having both should be fine?

I'm against storing both, but we could have a method to cast these.

Then again, users on all other platforms are gonna need a cast from c_void to whatever , it's not really a big deal for a windows-sys v0.52.0 user to do that cast themselves.

[notgull]

Or maybe provide method to get a ptr or maybe store as ptr and get a method to get as usize. We were storing them as ptr before, then they were made into integer per migration to windows-rs stuff, and now we move them back to ptr, so at this point maybe just having both should be fine?

Not sure if this is useful. windows-sys currently represents the handle as a pointer. If it goes back to being an integer for some reason, we can add helper methods for converting to and from integer.