Mention different internal usage of index list model

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50454 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/docs/latex/wx/dataviewindexlistmodel.tex b/docs/latex/wx/dataviewindexlistmodel.tex
index 6865386f2f0e894f565c60f559021fe30c9e349e..c334f0e6a0b3945aa18eb8c8d76194992cd9e1ba 100644 (file)
--- a/docs/latex/wx/dataviewindexlistmodel.tex
+++ b/docs/latex/wx/dataviewindexlistmodel.tex
@@ -8,6 +8,13 @@ This model also provides its own
 \helpref{Compare}{wxdataviewindexlistmodelcompare} method
 which sorts the model's data by the index.
 
+This model is special in the it is implemented differently under OS X
+and other platforms. Under OS X a wxDataViewItem is always persistent
+and this is also the case for this class. Under other platforms, the
+meaning of a wxDataViewItem is changed to reflect a row number for
+wxDataViewIndexListModel. The consequence of this is that 
+wxDataViewIndexListModel can be used as a virtual model with an
+almost infinate number of items on platforms other than OS X.
 
 \wxheading{Derived from}