async()
HRESULT async get asynchronous loading flag.
BOOL arg0 --- pf [OUT]
# File ext/win32ole/sample/xml.rb, line 7292 def async OLEProperty.new(@dispatch, 65649, [VT_BYREF|VT_BOOL], [VT_BYREF|VT_BOOL, VT_HRESULT]) end