From e8b6c949c006393ab690aa3e890cd48defc97b77 Mon Sep 17 00:00:00 2001
From: Olivier Goffart <ogoffart@trolltech.com>
Date: Tue, 2 Feb 2010 11:06:59 +0100
Subject: Document that QModelIndex::child does not work for the root item

Reviewed-by: Thierry
---
 src/corelib/kernel/qabstractitemmodel.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index dbf422e..36e4af9 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -1006,6 +1006,9 @@ void QAbstractItemModelPrivate::columnsRemoved(const QModelIndex &parent,
     Returns the child of the model index that is stored in the given \a row and
     \a column.
 
+    \note This function does not work for an invalid model index which is often
+    used as the root index.
+
     \sa parent(), sibling()
 */
 
-- 
cgit v0.12