Fix caret position when deleting last character

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51970 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/richtext/richtextbuffer.cpp b/src/richtext/richtextbuffer.cpp
index 0c8452803c22b33739d3e12b1853caca0a1b2e7b..176c09d8d6d744ecc3465a02a5413e0ebb6ce1a2 100644 (file)
--- a/src/richtext/richtextbuffer.cpp
+++ b/src/richtext/richtextbuffer.cpp
@@ -6269,7 +6269,11 @@ bool wxRichTextAction::Do()
             m_buffer->UpdateRanges();
             m_buffer->Invalidate(wxRichTextRange(GetRange().GetStart(), GetRange().GetStart()));
 
             m_buffer->UpdateRanges();
             m_buffer->Invalidate(wxRichTextRange(GetRange().GetStart(), GetRange().GetStart()));
 

-            UpdateAppearance(GetRange().GetStart()-1, true /* send update event */);
+            long caretPos = GetRange().GetStart()-1;
+            if (caretPos >= m_buffer->GetRange().GetEnd())
+                caretPos --;
+
+            UpdateAppearance(caretPos, true /* send update event */);

 
             wxRichTextEvent cmdEvent(
                 wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED,
 
             wxRichTextEvent cmdEvent(
                 wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED,