This function modifies the way keyboard events are matched against key
sequence mappings. Calling ImpliesShift("?") means that
anything mapped from ``?'' implicitly also requires the Shift key to
be down. The modifications of ImpliesShift only affect mappings
defined by wxKeymap::MapFunction (section 
)
using string patterns, and all shift implications must be defined
before mappings.
As an example, consider mapping functions to ``?''. Because ``?'' is a shifted slash on most keyboards, no keyboard event would ever match a non-shifted ``?''. However, a keymap designer would typically want only to specify ``?'' as the mapping state, because there might exist keyboards with a non-shifted ``?'' and the user should be able to just hit ``?'' in that case.
In general, it is a very difficult problem to determine which keyboard characters imply a shift and which do not. Therefore, it is left up to the keymap user to dynamically define which keys imply a shift. An application could pull the shift-implied keys out of a machine-specific configuration file.