added text style support to wxTextCtrl for MSW

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10345 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/textctrl.h

@@ -77,6 +77,12 @@ public:
     virtual void WriteText(const wxString& text);
     virtual void AppendText(const wxString& text);
 
+#if wxUSE_RICHEDIT
+    // apply text attribute to the range of text (only works with richedit
+    // controls)
+    virtual bool SetStyle(long start, long end, const wxTextAttr& style);
+#endif // wxUSE_RICHEDIT
+
     // translate between the position (which is just an index in the text ctrl
     // considering all its contents as a single strings) and (x, y) coordinates
     // which represent column and line.