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

src/richtext/richtextbuffer.cpp

@@ -7073,6 +7073,9 @@ void wxRichTextAction::UpdateAppearance(long caretPosition, bool sendUpdateEvent
                 m_ctrl->Refresh(false);
             }
 
+#if wxRICHTEXT_USE_OWN_CARET
+            m_ctrl->PositionCaret();
+#endif
             if (sendUpdateEvent)
                 m_ctrl->SendTextUpdatedEvent();
         }
@@ -7222,6 +7225,9 @@ bool wxRichTextImage::GetRangeSize(const wxRichTextRange& range, wxSize& size, i
     if (!range.IsWithin(GetRange()))
         return false;
 
+    if (!m_image.Ok())
+        ((wxRichTextImage*) this)->LoadFromBlock();
+
 #if wxRICHTEXT_USE_PARTIAL_TEXT_EXTENTS
     if (g_UseGlobalPartialTextExtents)
     {