How exactly are you supposed to initialize a class variable? I attached my file for you to look at and the error message.
------ Rebuild All started: Project: TTSOutgoing, Configuration: Debug Win32 ------
Deleting intermediate files and output files for project 'TTSOutgoing', configuration 'Debug|Win32'.
c:\program files\speechstudio\samples\vcpp\ttsoutgoing\ttsout going.cpp(320) : warning C4700: local variable 'pCallStateEvent' used without having been initialized
Build log was saved at "file://c:\Program Files\SpeechStudio\Samples\VCpp\TTSOutgoing\Debug\ BuildLog.htm"
TTSOutgoing - 0 error(s), 1 warning(s)