4 files changed, 21 insertions, 5 deletions
diff --git a/src/gui/itemviews/qheaderview.cpp b/src/gui/itemviews/qheaderview.cpp
index c857670..2ccf792 100644
--- a/src/gui/itemviews/qheaderview.cpp
+++ b/src/gui/itemviews/qheaderview.cpp
@@ -643,8 +643,12 @@ int QHeaderView::sectionSize(int logicalIndex) const
 }
 
 /*!
-    Returns the section position of the given \a logicalIndex, or -1 if the
-    section is hidden.
+
+    Returns the section position of the given \a logicalIndex, or -1
+    if the section is hidden. The position is measured in pixels from
+    the first visible item's top-left corner to the top-left corner of
+    the item with \a logicalIndex. The measurement is along the x-axis
+    for horizontal headers and along the y-axis for vertical headers.
 
     \sa sectionViewportPosition()
 */
diff --git a/src/gui/itemviews/qlistwidget.cpp b/src/gui/itemviews/qlistwidget.cpp
index 94e3b76..61a935f 100644
--- a/src/gui/itemviews/qlistwidget.cpp
+++ b/src/gui/itemviews/qlistwidget.cpp
@@ -1500,7 +1500,9 @@ void QListWidget::setCurrentRow(int row, QItemSelectionModel::SelectionFlags com
 }
 
 /*!
-    Returns a pointer to the item at the coordinates \a p.
+    Returns a pointer to the item at the coordinates \a p. The coordinates
+    are relative to the list widget's \l{QAbstractScrollArea::}{viewport()}.
+
 */
 QListWidgetItem *QListWidget::itemAt(const QPoint &p) const
 {
@@ -1514,6 +1516,9 @@ QListWidgetItem *QListWidget::itemAt(const QPoint &p) const
     \overload
 
     Returns a pointer to the item at the coordinates (\a x, \a y).
+    The coordinates are relative to the list widget's
+    \l{QAbstractScrollArea::}{viewport()}.
+
 */
 
 
diff --git a/src/gui/itemviews/qstyleditemdelegate.cpp b/src/gui/itemviews/qstyleditemdelegate.cpp
index 0d1473d..eb54bac 100644
--- a/src/gui/itemviews/qstyleditemdelegate.cpp
+++ b/src/gui/itemviews/qstyleditemdelegate.cpp
@@ -263,6 +263,11 @@ QStyledItemDelegate::~QStyledItemDelegate()
 
     The default implementation uses the QLocale::toString to convert \a value into
     a QString.
+
+    This function is not called for empty model indices, i.e., indices for which
+    the model returns an invalid QVariant.
+
+    \sa QAbstractItemModel::data()
 */
 QString QStyledItemDelegate::displayText(const QVariant &value, const QLocale& locale) const
 {
diff --git a/src/gui/itemviews/qtreewidget.cpp b/src/gui/itemviews/qtreewidget.cpp
index 4db29d6..2ea9a43 100644
--- a/src/gui/itemviews/qtreewidget.cpp
+++ b/src/gui/itemviews/qtreewidget.cpp
@@ -2830,7 +2830,8 @@ void QTreeWidget::setCurrentItem(QTreeWidgetItem *item, int column,
 
 
 /*!
-  Returns a pointer to the item at the coordinates \a p.
+  Returns a pointer to the item at the coordinates \a p. The coordinates
+  are relative to the tree widget's \l{QAbstractScrollArea::}{viewport()}.
 
   \sa visualItemRect()
 */
@@ -2844,7 +2845,8 @@ QTreeWidgetItem *QTreeWidget::itemAt(const QPoint &p) const
     \fn QTreeWidgetItem *QTreeWidget::itemAt(int x, int y) const
     \overload
 
-    Returns a pointer to the item at the coordinates (\a x, \a y).
+    Returns a pointer to the item at the coordinates (\a x, \a y). The coordinates
+    are relative to the tree widget's \l{QAbstractScrollArea::}{viewport()}.
 */
 
 /*!