Don't emit EVT_TEXT after wxComboBox::SetValue()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@45684 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/combobox.cpp

@@ -954,9 +954,11 @@ void wxComboBox::SetValue( const wxString& value )
 #endif
         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 
+    DisableEvents();
     wxString tmp;
     if (!value.IsNull()) tmp = value;
     gtk_entry_set_text( entry, wxGTK_CONV( tmp ) );
+    EnableEvents();
 
     InvalidateBestSize();
 }