Added a wxRichTextCtrl-specific caret implementation in case of need

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@53408 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/richtext/richtextbuffer.h

@@ -70,6 +70,14 @@
 #include "wx/dataobj.h"
 #endif
 
+// Setting wxRICHTEXT_USE_OWN_CARET to 1 implements a non-flashing
+// cursor reliably without using wxClientDC in case there
+// are platform-specific problems with the generic caret.
+#define wxRICHTEXT_USE_OWN_CARET 0
+
+// Switch off for binary compatibility, on for faster drawing
+#define wxRICHTEXT_USE_OPTIMIZED_LINE_DRAWING 0
+
 /*!
  * Special characters
  */
@@ -285,9 +293,6 @@ class WXDLLIMPEXP_FWD_RICHTEXT wxRichTextBuffer;
 
 #define wxSCRIPT_MUL_FACTOR             1.5
 
-// Switch off for binary compatibility, on for faster drawing
-#define wxRICHTEXT_USE_OPTIMIZED_LINE_DRAWING 0
-
 /*!
  * wxRichTextRange class declaration
  * This stores beginning and end positions for a range of data.