the sizer (the most common case being @c wxHORIZONTAL). The flags
parameter may have the value @c wxEXTEND_LAST_ON_EACH_LINE which will
cause the last item on each line to use any remaining space on that line.
the sizer (the most common case being @c wxHORIZONTAL). The flags
parameter may have the value @c wxEXTEND_LAST_ON_EACH_LINE which will
cause the last item on each line to use any remaining space on that line.