import mark applic event handl cancel behavior method check result proxi method set event accordingli param event param handl set applic event handl object event handl event method set handl method event declar method set handl target method return us hint set handl method invok event object valu handl except ex defin log lp log granular type statement lp log local nest statement log error osx adapt unabl handl applic event event ex endif 