1 files changed, 4 insertions, 2 deletions
diff --git a/src/gui/widgets/qdockarealayout_p.h b/src/gui/widgets/qdockarealayout_p.h
index 0b8d832..137aeba 100644
--- a/src/gui/widgets/qdockarealayout_p.h
+++ b/src/gui/widgets/qdockarealayout_p.h
@@ -103,6 +103,7 @@ struct QDockAreaLayoutItem
     QSize maximumSize() const;
     QSize sizeHint() const;
     bool expansive(Qt::Orientation o) const;
+    bool hasFixedSize(Qt::Orientation o) const;
 
     QLayoutItem *widgetItem;
     QDockAreaLayoutInfo *subinfo;
@@ -167,6 +168,7 @@ public:
 
     void clear();
     bool isEmpty() const;
+    bool hasFixedSize() const;
     QList<int> findSeparator(const QPoint &pos) const;
     int next(int idx) const;
     int prev(int idx) const;
@@ -188,7 +190,7 @@ public:
     QMainWindowLayout *mainWindowLayout() const;
 
     int sep;
-    QVector<QWidget*> separatorWidgets;
+    mutable QVector<QWidget*> separatorWidgets;
     QInternal::DockPosition dockPos;
     Qt::Orientation o;
     QRect rect;
@@ -231,7 +233,7 @@ public:
     QDockAreaLayout(QMainWindow *win);
     QDockAreaLayoutInfo docks[4];
     int sep; // separator extent
-    QVector<QWidget*> separatorWidgets;
+    mutable QVector<QWidget*> separatorWidgets;
 
     bool isValid() const;