Added wxRICHTEXT_SETSTYLE_RESET SetStyleEx() flag to allow for clearing attributes before setting new ones

SetStyle() now looks up and applies named paragraph or character style
Fixed a bug in text entry (taking previous paragraph's style)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43459 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/richtext/richtextbuffer.h

@@ -176,6 +176,9 @@ class WXDLLIMPEXP_RICHTEXT wxRichTextBuffer;
 // the current indentation will be used
 #define wxRICHTEXT_SETSTYLE_SPECIFY_LEVEL   0x20
 
+// Resets the existing style before applying the new style
+#define wxRICHTEXT_SETSTYLE_RESET           0x40
+
 /*!
  * Flags for text insertion
  */