GlassClipboard.cpp fails to compile when building with a newer version of VS2017, for example VC 14.15.26726:
...\modules\javafx.graphics\src\main\native-glass\win\GlassClipboard.cpp(86): error C2065: '_HASH_SEED': undeclared identifier
This was discovered and reported on GitHub as: https://github.com/javafxports/openjdk-jfx/issues/183 when the AppVeyor builds started failing (they recently updated their version of VS 2017).
I raised the priority to P2, since it causes the AppVeyor build to fail, which we use to test pull requests.