Clear cached information.
void mdraw_clear_cache (MText * mt)
clear cached information. The mdraw_clear_cache() function clear cached information on M-text mt that was attached by any of the drawing functions. When the behavior of `format' or `line_break' member functions of MDrawControl is changed, the cache must be cleared.
MDrawControl
Copyright (C) 2001 Information-technology Promotion Agency (IPA)
Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
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