/**
@class wxClientDataContainer
- @wxheader{clntdata.h}
This class is a mixin that provides storage and management of "client
data." This data can either be of type void - in which case the data
/**
@class wxClientData
- @wxheader{clntdata.h}
All classes deriving from wxEvtHandler (such as all controls and wxApp) can
hold arbitrary data which is here referred to as "client data". This is
/**
@class wxStringClientData
- @wxheader{clntdata.h}
Predefined client data class for holding a string.