2 files changed, 9 insertions, 1 deletions
diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
index d934683..c3ff2bd 100644
--- a/src/gui/itemviews/qtreeview.cpp
+++ b/src/gui/itemviews/qtreeview.cpp
@@ -3194,12 +3194,16 @@ void QTreeViewPrivate::layout(int i, bool recursiveExpanding, bool afterIsUninit
 int QTreeViewPrivate::pageUp(int i) const
 {
     int index = itemAtCoordinate(coordinateForItem(i) - viewport->height());
+    while (isItemHiddenOrDisabled(index))
+        index--;
     return index == -1 ? 0 : index;
 }
 
 int QTreeViewPrivate::pageDown(int i) const
 {
     int index = itemAtCoordinate(coordinateForItem(i) + viewport->height());
+    while (isItemHiddenOrDisabled(index))
+        index++;
     return index == -1 ? viewItems.count() - 1 : index;
 }
 
diff --git a/src/gui/itemviews/qtreewidget.cpp b/src/gui/itemviews/qtreewidget.cpp
index 19ed10b..4c80325 100644
--- a/src/gui/itemviews/qtreewidget.cpp
+++ b/src/gui/itemviews/qtreewidget.cpp
@@ -3039,10 +3039,14 @@ QList<QTreeWidgetItem*> QTreeWidget::selectedItems() const
     Q_D(const QTreeWidget);
     QModelIndexList indexes = selectionModel()->selectedIndexes();
     QList<QTreeWidgetItem*> items;
+    items.reserve(indexes.count());
+    QSet<QTreeWidgetItem *> seen;
+    seen.reserve(indexes.count());
     for (int i = 0; i < indexes.count(); ++i) {
         QTreeWidgetItem *item = d->item(indexes.at(i));
-        if (isItemHidden(item) || items.contains(item)) // ### slow, optimize later
+        if (isItemHidden(item) || seen.contains(item))
             continue;
+        seen.insert(item);
         items.append(item);
     }
     return items;