renderer::DrawHeaderButton() seems to need space

which should be corrected in a general way.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38835 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/datavgen.cpp

@@ -616,7 +616,7 @@ void wxDataViewHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
                                 (
                                     this,
                                     dc,
-                                    wxRect(xpos, 0, cw, ch),
+                                    wxRect(xpos+1, 1, cw-1, ch-1),
                                     m_parent->IsEnabled() ? 0
                                                           : (int)wxCONTROL_DISABLED
                                 );