a couple of wors about wxObjArray::Index()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6173 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/array.tex

@@ -477,6 +477,12 @@ Linear search is used for the wxArray and wxObjArray classes but binary search
 in the sorted array is used for wxSortedArray (this is why searchFromEnd
 parameter doesn't make sense for it).
 
+{\bf NB:} even for wxObjArray classes, the operator==() of the elements in the
+array is {\bf not} used by this function. It searches exactly the given
+element in the array and so will only succeed if this element had been
+previously added to the array, but fail even if another, identical, element is
+in the array.
+
 \membersection{wxArray::Insert}\label{wxarrayinsert}
 
 \func{void}{Insert}{\param{T }{item}, \param{size\_t }{n}}