Bgen now understands more constant definitions, but that means that a few which are not parseable in Python have to be blacklisted.
diff --git a/Mac/Modules/evt/evtscan.py b/Mac/Modules/evt/evtscan.py
index 1f558ea..0a3ede0 100644
--- a/Mac/Modules/evt/evtscan.py
+++ b/Mac/Modules/evt/evtscan.py
@@ -39,7 +39,9 @@
 		return [
 			"KeyTranslate",
 			"GetEventMask",		# I cannot seem to find this routine...
-			"WaitNextEvent"		# Manually generated because of optional region
+			"WaitNextEvent",	# Manually generated because of optional region
+			# Constants with funny definitions
+			"osEvtMessageMask",
 			]
 
 	def makeblacklisttypes(self):