fix DoSetSelection(): it did nothing when there was no old selection

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41804 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/mac/carbon/notebmac.cpp b/src/mac/carbon/notebmac.cpp
index 6daf1bd791f5964852ef26a4ab303f1afb110416..5861863c684cb06ca47472df442a520cadc51438 100644 (file)
--- a/src/mac/carbon/notebmac.cpp
+++ b/src/mac/carbon/notebmac.cpp
@@ -164,7 +164,7 @@ int wxNotebook::DoSetSelection(size_t nPage, int flags)
 {
     wxCHECK_MSG( IS_VALID_PAGE(nPage), wxNOT_FOUND, wxT("DoSetSelection: invalid notebook page") );
 
-    if ( m_nSelection != wxNOT_FOUND && nPage != (size_t)m_nSelection )
+    if ( m_nSelection == wxNOT_FOUND || nPage != (size_t)m_nSelection )
     {
         if ( flags & SetSelection_SendEvent )
         {
@@ -180,6 +180,7 @@ int wxNotebook::DoSetSelection(size_t nPage, int flags)
 
         ChangePage(m_nSelection, nPage);
     }
+    //else: no change
 
     return m_nSelection;
 }