Windows: Add PUGL_DARK_FRAME hint

This allows dark applications to visually integrate more nicely in Windows 10.
A little thing, but it really goes a long way to make programs not look out of
place and half-baked.

1 files changed, 2 insertions, 0 deletions

diff --git a/test/test_utils.h b/test/test_utils.h
index e26e970..785c8c7 100644
--- a/test/test_utils.h
+++ b/test/test_utils.h
@@ -296,6 +296,8 @@ puglViewHintString(const PuglViewHint hint)
     return "Refresh rate";
   case PUGL_VIEW_TYPE:
     return "View type";
+  case PUGL_DARK_FRAME:
+    return "Dark frame";
   }
 
   return "Unknown";