added wxBookCtrl::ChangeSelection() which is the same as SetSelection() but doesn't send the page change events (second part of patch 1553551)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41738 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/notebook.h

@@ -63,9 +63,12 @@ public:
     // implement wxNotebookBase pure virtuals
     // --------------------------------------
 
-    virtual int SetSelection(size_t nPage);
+    virtual int SetSelection(size_t nPage) { return DoSetSelection(nPage, SetSelection_SendEvent); }
     virtual int GetSelection() const { return (int) m_sel; }
 
+    // changes selected page without sending events
+    int ChangeSelection(size_t nPage) { return DoSetSelection(nPage); }
+
     virtual bool SetPageText(size_t nPage, const wxString& strText);
     virtual wxString GetPageText(size_t nPage) const;
 
@@ -134,6 +137,8 @@ protected:
                            int width, int height,
                            int sizeFlags = wxSIZE_AUTO);
 
+    int DoSetSelection(size_t nPage, int flags = 0);
+
     // common part of all ctors
     void Init();